feat(web): support @response metadata (text/json/html) and return matching run content type

Dockerfile

@@ -14,10 +14,10 @@ RUN gradle --no-daemon clean installDist
 FROM ${RUNTIME_IMAGE}
 WORKDIR /app
 
-COPY --from=build /workspace/build/install/kotlin-scripts-host /app/kotlin-scripts-host
+COPY --from=build /workspace/build/install/slhaf-hub /app/slhaf-hub
 RUN mkdir -p /app/scripts
 
 EXPOSE 8080
 
-ENTRYPOINT ["/app/kotlin-scripts-host/bin/kotlin-scripts-host"]
+ENTRYPOINT ["/app/slhaf-hub/bin/slhaf-hub"]
 CMD ["--host=0.0.0.0", "--port=8080", "--scripts-dir=/app/scripts"]

README.md

@@ -10,6 +10,7 @@ Language:
 - Dynamic script loading from `scripts/*.hub.kts` without restarting host
 - Root/Sub token authorization model
 - Metadata in script comments (`@desc`, `@timeout`, `@param`)
+- Compiled script cache (reuses compiled artifacts when script file is unchanged)
 - Script CRUD + run + metadata APIs
 - Subtoken management APIs
 - Run concurrency limit (`--max-run-concurrency`)
@@ -37,15 +38,15 @@ cd slhaf-hub
 docker build -t slhaf-hub:latest .
 docker run --rm -p 8080:8080 \
   -v "$(pwd)/scripts:/app/scripts" \
-  -e HOST_API_TOKEN=your-token \
+  -e SLHAF_HUB_TOKEN=your-token \
   -e MAX_RUN_CONCURRENCY=8 \
   slhaf-hub:latest
 ```
 
 #### 3) Run with Docker Compose
 ```bash
-# optional: export HOST_API_TOKEN=your-token
-# optional: export HOST_PORT=8080
+# optional: export SLHAF_HUB_TOKEN=your-token
+# optional: export SLHAF_HUB_PORT=8080
 # optional: export MAX_RUN_CONCURRENCY=8
 docker compose up -d --build
 ```
@@ -79,7 +80,7 @@ Auth headers:
 - `X-Host-Token: <token>`
 
 Token source priority:
-1. `HOST_API_TOKEN` env var
+1. `SLHAF_HUB_TOKEN` env var
 2. `scripts/.host-api-token`
 3. Auto-generated token saved to `scripts/.host-api-token`
 

README.zh-CN.md

@@ -10,6 +10,7 @@
 - 从 `scripts/*.hub.kts` 动态加载脚本，无需重启 host
 - Root/Sub token 鉴权模型
 - 脚本注释 metadata（`@desc`、`@timeout`、`@param`）
+- 编译缓存（脚本文件未变化时复用已编译产物）
 - 脚本 CRUD + run + meta API
 - subtoken 管理 API
 - 运行并发限制（`--max-run-concurrency`）
@@ -37,15 +38,15 @@ cd slhaf-hub
 docker build -t slhaf-hub:latest .
 docker run --rm -p 8080:8080 \
   -v "$(pwd)/scripts:/app/scripts" \
-  -e HOST_API_TOKEN=your-token \
+  -e SLHAF_HUB_TOKEN=your-token \
   -e MAX_RUN_CONCURRENCY=8 \
   slhaf-hub:latest
 ```
 
 #### 3) Docker Compose 启动
 ```bash
-# 可选：export HOST_API_TOKEN=your-token
-# 可选：export HOST_PORT=8080
+# 可选：export SLHAF_HUB_TOKEN=your-token
+# 可选：export SLHAF_HUB_PORT=8080
 # 可选：export MAX_RUN_CONCURRENCY=8
 docker compose up -d --build
 ```
@@ -79,7 +80,7 @@ CLI/TUI 环境变量：
 - `X-Host-Token: <token>`
 
 Token 来源优先级：
-1. 环境变量 `HOST_API_TOKEN`
+1. 环境变量 `SLHAF_HUB_TOKEN`
 2. `scripts/.host-api-token`
 3. 自动生成并写入 `scripts/.host-api-token`
 

build.gradle.kts

@@ -5,10 +5,6 @@ plugins {
 
 val kotlinVersion = "2.2.20"
 
-repositories {
-    mavenCentral()
-}
-
 dependencies {
     implementation(kotlin("stdlib"))
 

docker-compose.yml

@@ -1,18 +1,12 @@
 services:
   slhaf-hub:
-    build:
-      context: .
-      dockerfile: Dockerfile
-      args:
-        BUILD_IMAGE: ${BUILD_IMAGE:-gradle:9.0.0-jdk17}
-        RUNTIME_IMAGE: ${RUNTIME_IMAGE:-eclipse-temurin:17-jre}
-    image: slhaf-hub:latest
+    image: ${SLHAF_HUB_IMAGE:-docker.io/slhafzjw/slhaf-hub:latest}
     container_name: slhaf-hub
     restart: unless-stopped
     ports:
-      - "${HOST_PORT:-8080}:8080"
+      - "${SLHAF_HUB_PORT:-8080}:8080"
     environment:
-      HOST_API_TOKEN: ${HOST_API_TOKEN:-}
+      SLHAF_HUB_TOKEN: ${SLHAF_HUB_TOKEN:-}
       MAX_RUN_CONCURRENCY: ${MAX_RUN_CONCURRENCY:-}
     volumes:
       - ./scripts:/app/scripts

scripts/hello.hub.kts

@@ -1,10 +1,11 @@
 // @desc: hello
 // @timeout: 10s
 // @param: name   | default=world | desc=hello <name> | required=false
-// @param: upper  | default=false | desc=upper text   | required=true
+// @param: upper  | default=false | desc=upper text   | required=false
+// @response: json
 import java.time.LocalDateTime
 
-val args: Array<String> = emptyArray()
+lateinit var args: Array<String>
 val kv =
     args
         .mapNotNull {
@@ -13,7 +14,7 @@ val kv =
         }.toMap()
 
 val name = kv["name"] ?: "world"
-val upper = (kv["upper"]!!).toBoolean()
+val upper = (kv["upper"] ?: "false").toBoolean()
 val message = "Hello, $name @ ${LocalDateTime.now()}"
 
 println(if (upper) message.uppercase() else message)

settings.gradle.kts

@@ -1 +1,18 @@
 rootProject.name = "slhaf-hub"
+
+pluginManagement {
+    repositories {
+        maven("https://maven.aliyun.com/repository/gradle-plugin")
+        maven("https://maven.aliyun.com/repository/public")
+        gradlePluginPortal()
+        mavenCentral()
+    }
+}
+
+dependencyResolutionManagement {
+    repositoriesMode.set(RepositoriesMode.PREFER_SETTINGS)
+    repositories {
+        maven("https://maven.aliyun.com/repository/public")
+        mavenCentral()
+    }
+}

src/main/kotlin/work/slhaf/hub/ScriptEngine.kt

@@ -1,387 +0,0 @@
-package work.slhaf.hub
-
-import kotlinx.coroutines.runBlocking
-import java.io.ByteArrayOutputStream
-import java.io.File
-import java.io.PrintStream
-import java.util.concurrent.ConcurrentHashMap
-import java.util.concurrent.Executors
-import java.util.concurrent.TimeUnit
-import java.util.concurrent.TimeoutException
-import kotlin.script.experimental.api.*
-import kotlin.script.experimental.dependencies.*
-import kotlin.script.experimental.dependencies.maven.MavenDependenciesResolver
-import kotlin.script.experimental.host.toScriptSource
-import kotlin.script.experimental.jvm.JvmDependency
-import kotlin.script.experimental.jvm.jvm
-import kotlin.script.experimental.jvm.updateClasspath
-import kotlin.script.experimental.jvmhost.BasicJvmScriptingHost
-
-private val scriptingHost = BasicJvmScriptingHost()
-private val evalLock = Any()
-private val metadataCache = ConcurrentHashMap<String, Pair<String, ScriptMetadata>>() // key -> stamp, metadata
-
-private val resolver = CompoundDependenciesResolver(FileSystemDependenciesResolver(), MavenDependenciesResolver())
-private val argsDeclarationRegex = Regex("""^\s*val\s+args\s*:\s*Array<String>\s*=\s*emptyArray\(\)\s*$""")
-private const val DEFAULT_SCRIPT_TIMEOUT_MS = 10_000L
-private val metadataParamNameRegex = Regex("[A-Za-z0-9._-]+")
-private val evalExecutor = Executors.newCachedThreadPool { r ->
-    Thread(r, "script-eval-worker").apply { isDaemon = true }
-}
-
-fun explicitClasspathFromEnv(): List<File>? {
-    val value = System.getenv("HOST_SCRIPT_CLASSPATH") ?: return null
-    if (value.isBlank()) return null
-    return value.split(File.pathSeparator).filter { it.isNotBlank() }.map(::File)
-}
-
-private fun runtimeClasspathFromJavaProperty(): List<File> {
-    val raw = System.getProperty("java.class.path").orEmpty()
-    if (raw.isBlank()) return emptyList()
-    return raw
-        .split(File.pathSeparator)
-        .asSequence()
-        .filter { it.isNotBlank() }
-        .map(::File)
-        .filter { it.exists() }
-        .distinctBy { it.absolutePath }
-        .toList()
-}
-
-private fun configureMavenDepsOnAnnotations(
-    context: ScriptConfigurationRefinementContext
-): ResultWithDiagnostics<ScriptCompilationConfiguration> {
-    val annotations = context.collectedData
-        ?.get(ScriptCollectedData.collectedAnnotations)
-        ?.takeIf { it.isNotEmpty() }
-        ?: return context.compilationConfiguration.asSuccess()
-
-    return runBlocking {
-        resolver.resolveFromScriptSourceAnnotations(annotations)
-    }.onSuccess { files ->
-        context.compilationConfiguration.with {
-            dependencies.append(JvmDependency(files))
-        }.asSuccess()
-    }
-}
-
-private fun compilationConfiguration(explicitCp: List<File>?): ScriptCompilationConfiguration {
-    return ScriptCompilationConfiguration {
-        baseClass(SimpleScript::class)
-        defaultImports(DependsOn::class, Repository::class)
-
-        jvm {
-            val runtimeCp = runtimeClasspathFromJavaProperty()
-            updateClasspath((explicitCp ?: emptyList()) + runtimeCp)
-        }
-
-        refineConfiguration {
-            onAnnotations(DependsOn::class, Repository::class, handler = ::configureMavenDepsOnAnnotations)
-        }
-    }
-}
-
-private fun escapeKotlinString(value: String): String = buildString(value.length) {
-    value.forEach { ch ->
-        when (ch) {
-            '\\' -> append("\\\\")
-            '"' -> append("\\\"")
-            '\n' -> append("\\n")
-            '\r' -> append("\\r")
-            '\t' -> append("\\t")
-            else -> append(ch)
-        }
-    }
-}
-
-private fun argsInitializer(args: List<String>): String =
-    "val args: Array<String> = arrayOf(${args.joinToString(",") { "\"${escapeKotlinString(it)}\"" }})"
-
-private fun scriptStamp(file: File): String = "${file.length()}-${file.lastModified()}"
-
-private fun injectArgsDeclaration(scriptContent: String, args: List<String>): String {
-    val lines = scriptContent.lines()
-    val injected = argsInitializer(args)
-    var replaced = false
-    val result = lines.map { line ->
-        if (!replaced && argsDeclarationRegex.matches(line)) {
-            replaced = true
-            injected
-        } else {
-            line
-        }
-    }
-    return result.joinToString("\n")
-}
-
-private fun parseMetadataFromComments(scriptContent: String): ScriptMetadata {
-    var description: String? = null
-    var timeoutMs = DEFAULT_SCRIPT_TIMEOUT_MS
-    val params = mutableListOf<ScriptParamDefinition>()
-
-    scriptContent.lines().forEach { raw ->
-        val line = raw.trim()
-        if (!line.startsWith("//")) return@forEach
-
-        val comment = line.removePrefix("//").trim()
-        if (comment.startsWith("@desc:", ignoreCase = true)) {
-            description = comment.substringAfter(":").trim().takeIf { it.isNotBlank() }
-            return@forEach
-        }
-        if (comment.startsWith("@timeout:", ignoreCase = true)) {
-            val raw = comment.substringAfter(":").trim()
-            parseTimeoutMs(raw)?.let { timeoutMs = it }
-            return@forEach
-        }
-        if (comment.startsWith("@param:", ignoreCase = true)) {
-            val payload = comment.substringAfter(":").trim()
-            if (payload.isBlank()) return@forEach
-
-            val parts = payload.split("|").map { it.trim() }.filter { it.isNotBlank() }
-            if (parts.isEmpty()) return@forEach
-
-            val name = parts.first()
-            var required = false
-            var defaultValue: String? = null
-            var desc: String? = null
-
-            parts.drop(1).forEach { part ->
-                when {
-                    part.equals("required", ignoreCase = true) -> required = true
-                    part.startsWith("required=", ignoreCase = true) ->
-                        required = part.substringAfter("=").trim().equals("true", ignoreCase = true)
-                    part.startsWith("default=", ignoreCase = true) ->
-                        defaultValue = part.substringAfter("=").trim().ifBlank { null }
-                    part.startsWith("desc=", ignoreCase = true) ->
-                        desc = part.substringAfter("=").trim().ifBlank { null }
-                }
-            }
-
-            params += ScriptParamDefinition(
-                name = name,
-                required = required,
-                defaultValue = defaultValue,
-                description = desc
-            )
-        }
-    }
-
-    return ScriptMetadata(description = description, params = params, timeoutMs = timeoutMs)
-}
-
-fun validateScriptMetadata(scriptContent: String): List<String> {
-    val errors = mutableListOf<String>()
-    val seenParams = mutableSetOf<String>()
-
-    scriptContent.lines().forEachIndexed { idx, raw ->
-        val lineNo = idx + 1
-        val line = raw.trim()
-        if (!line.startsWith("//")) return@forEachIndexed
-
-        val comment = line.removePrefix("//").trim()
-        if (comment.startsWith("@timeout:", ignoreCase = true)) {
-            val rawTimeout = comment.substringAfter(":").trim()
-            if (parseTimeoutMs(rawTimeout) == null) {
-                errors += "line $lineNo: invalid @timeout '$rawTimeout'. expected format: '@timeout: 10s' or '500ms' or '1m'."
-            }
-            return@forEachIndexed
-        }
-
-        if (comment.startsWith("@param:", ignoreCase = true)) {
-            val payload = comment.substringAfter(":").trim()
-            if (payload.isBlank()) {
-                errors += "line $lineNo: empty @param. expected format: '@param: name | required=true|false | default=value | desc=text'."
-                return@forEachIndexed
-            }
-
-            val parts = payload.split("|").map { it.trim() }.filter { it.isNotBlank() }
-            if (parts.isEmpty()) {
-                errors += "line $lineNo: invalid @param. expected format: '@param: name | required=true|false | default=value | desc=text'."
-                return@forEachIndexed
-            }
-
-            val name = parts.first()
-            if (!metadataParamNameRegex.matches(name)) {
-                errors += "line $lineNo: invalid param name '$name'. allowed pattern: [A-Za-z0-9._-]+."
-            }
-            if (!seenParams.add(name)) {
-                errors += "line $lineNo: duplicate @param name '$name'. param names must be unique."
-            }
-
-            var hasRequiredOption = false
-            parts.drop(1).forEach { part ->
-                when {
-                    part.equals("required", ignoreCase = true) -> {
-                        hasRequiredOption = true
-                    }
-                    part.startsWith("required=", ignoreCase = true) -> {
-                        hasRequiredOption = true
-                        val v = part.substringAfter("=").trim()
-                        if (!v.equals("true", ignoreCase = true) && !v.equals("false", ignoreCase = true)) {
-                            errors += "line $lineNo: invalid required value '$v'. expected true/false."
-                        }
-                    }
-                    part.startsWith("default=", ignoreCase = true) -> Unit
-                    part.startsWith("desc=", ignoreCase = true) -> Unit
-                    else -> {
-                        errors += "line $lineNo: unsupported @param option '$part'. supported: required=, default=, desc=."
-                    }
-                }
-            }
-            if (!hasRequiredOption) {
-                errors += "line $lineNo: missing required option. expected '@param: name | required=true|false | default=value | desc=text'."
-            }
-        }
-    }
-
-    return errors
-}
-
-private fun parseTimeoutMs(raw: String): Long? {
-    if (raw.isBlank()) return null
-    val v = raw.trim().lowercase()
-    return when {
-        v.endsWith("ms") -> v.removeSuffix("ms").trim().toLongOrNull()
-        v.endsWith("s") -> v.removeSuffix("s").trim().toLongOrNull()?.times(1000)
-        v.endsWith("m") -> v.removeSuffix("m").trim().toLongOrNull()?.times(60_000)
-        else -> v.toLongOrNull()?.times(1000)
-    }?.takeIf { it > 0 }
-}
-
-private fun metadataForFile(scriptFile: File, scriptContent: String): ScriptMetadata {
-    val key = scriptFile.canonicalPath
-    val stamp = scriptStamp(scriptFile)
-    val cached = metadataCache[key]
-    if (cached != null && cached.first == stamp) return cached.second
-
-    val parsed = parseMetadataFromComments(scriptContent)
-    metadataCache[key] = stamp to parsed
-    return parsed
-}
-
-private fun evalSource(source: SourceCode): ResultWithDiagnostics<EvaluationResult> {
-    val explicitCp = explicitClasspathFromEnv()
-    return scriptingHost.eval(source, compilationConfiguration(explicitCp), null)
-}
-
-data class ScriptExecutionResult(
-    val ok: Boolean,
-    val output: String,
-    val metadata: ScriptMetadata,
-    val missingRequiredParams: List<String>,
-    val timedOut: Boolean = false,
-)
-
-fun cachedMetadata(scriptFile: File): ScriptMetadata? {
-    val key = scriptFile.canonicalPath
-    val cached = metadataCache[key] ?: return null
-    val currentStamp = scriptStamp(scriptFile)
-    return if (cached.first == currentStamp) cached.second else null
-}
-
-fun removeCachedMetadata(scriptFile: File) {
-    metadataCache.remove(scriptFile.canonicalPath)
-}
-
-fun loadMetadataFromComments(scriptFile: File): ScriptMetadata {
-    val content = scriptFile.readText()
-    return metadataForFile(scriptFile, content)
-}
-
-fun evalAndCapture(scriptFile: File, requestContext: ScriptRequestContext = ScriptRequestContext()): ScriptExecutionResult {
-    return evalAndCapture(scriptFile, requestContext, enforceRequiredParams = true)
-}
-
-fun evalAndCapture(
-    scriptFile: File,
-    requestContext: ScriptRequestContext = ScriptRequestContext(),
-    enforceRequiredParams: Boolean,
-): ScriptExecutionResult {
-    synchronized(evalLock) {
-        val oldOut = System.out
-        val oldErr = System.err
-        val buffer = ByteArrayOutputStream()
-        val ps = PrintStream(buffer, true, Charsets.UTF_8.name())
-
-        return try {
-            System.setOut(ps)
-            System.setErr(ps)
-
-            val original = scriptFile.readText()
-            val metadata = metadataForFile(scriptFile, original)
-            val missingRequired = metadata.params
-                .filter { p ->
-                    p.required && requestContext.args.none { token ->
-                        token.substringBefore("=", missingDelimiterValue = "") == p.name
-                    }
-                }
-                .map { it.name }
-
-            val injected = injectArgsDeclaration(original, requestContext.args)
-            val result = evalSource(injected.toScriptSource(scriptFile.name))
-            val returnValueError = (result as? ResultWithDiagnostics.Success)
-                ?.value
-                ?.returnValue as? ResultValue.Error
-            val hasErrorDiagnostics = result.reports.any {
-                it.severity == ScriptDiagnostic.Severity.ERROR || it.severity == ScriptDiagnostic.Severity.FATAL
-            }
-            val diagnostics = result.reports
-                .filter { it.severity > ScriptDiagnostic.Severity.DEBUG }
-                .joinToString("\n") {
-                    val ex = it.exception?.let { e -> ": ${e::class.simpleName}: ${e.message}" } ?: ""
-                    "[${it.severity}] ${it.message}$ex"
-                }
-            val missingMessage = if (!enforceRequiredParams || missingRequired.isEmpty()) "" else
-                "[ERROR] Missing required parameters: ${missingRequired.joinToString(", ")}"
-
-            val output = buffer.toString(Charsets.UTF_8.name()).trim()
-            val finalText = buildString {
-                if (output.isNotEmpty()) appendLine(output)
-                if (returnValueError != null) appendLine("[ERROR] ${returnValueError.error::class.simpleName}: ${returnValueError.error.message}")
-                if (diagnostics.isNotEmpty()) appendLine(diagnostics)
-                if (missingMessage.isNotEmpty()) appendLine(missingMessage)
-            }.trim()
-
-            ScriptExecutionResult(
-                ok = result is ResultWithDiagnostics.Success &&
-                    !hasErrorDiagnostics &&
-                    returnValueError == null &&
-                    (!enforceRequiredParams || missingRequired.isEmpty()),
-                output = finalText,
-                metadata = metadata,
-                missingRequiredParams = missingRequired,
-                timedOut = false,
-            )
-        } finally {
-            ps.flush()
-            ps.close()
-            System.setOut(oldOut)
-            System.setErr(oldErr)
-        }
-    }
-}
-
-fun evalAndCaptureWithTimeout(
-    scriptFile: File,
-    requestContext: ScriptRequestContext = ScriptRequestContext(),
-    timeoutMs: Long,
-    enforceRequiredParams: Boolean = true,
-): ScriptExecutionResult {
-    val boundedTimeout = timeoutMs.coerceAtLeast(1)
-    val future = evalExecutor.submit<ScriptExecutionResult> {
-        evalAndCapture(scriptFile, requestContext, enforceRequiredParams = enforceRequiredParams)
-    }
-    return try {
-        future.get(boundedTimeout, TimeUnit.MILLISECONDS)
-    } catch (_: TimeoutException) {
-        future.cancel(true)
-        val metadata = loadMetadataFromComments(scriptFile)
-        ScriptExecutionResult(
-            ok = false,
-            output = "[ERROR] Script execution timed out after ${boundedTimeout}ms",
-            metadata = metadata,
-            missingRequiredParams = emptyList(),
-            timedOut = true,
-        )
-    }
-}

src/main/kotlin/work/slhaf/hub/WebHost.kt

@@ -1,271 +0,0 @@
-package work.slhaf.hub
-
-import io.ktor.http.ContentType
-import io.ktor.http.HttpStatusCode
-import io.ktor.server.application.Application
-import io.ktor.server.application.call
-import io.ktor.server.engine.embeddedServer
-import io.ktor.server.netty.Netty
-import io.ktor.server.request.receiveText
-import io.ktor.server.response.respondText
-import io.ktor.server.routing.delete
-import io.ktor.server.routing.get
-import io.ktor.server.routing.post
-import io.ktor.server.routing.put
-import io.ktor.server.routing.routing
-import kotlinx.coroutines.sync.Semaphore
-import kotlinx.coroutines.sync.withPermit
-import java.io.File
-
-private const val DEFAULT_PORT = 8080
-private const val DEFAULT_SCRIPTS_DIR = "scripts"
-private const val DEFAULT_HOST = "0.0.0.0"
-private val DEFAULT_MAX_RUN_CONCURRENCY = Runtime.getRuntime().availableProcessors().coerceAtLeast(1)
-
-private suspend fun handleSubTokenCreate(call: io.ktor.server.application.ApplicationCall, security: HostSecurity) {
-    val name = call.parameters["name"]
-        ?: return call.respondText("missing subtoken name", status = HttpStatusCode.BadRequest)
-
-    if (!name.matches(Regex("[A-Za-z0-9._-]+"))) {
-        return call.respondText("invalid subtoken name", status = HttpStatusCode.BadRequest)
-    }
-
-    val scriptsRaw = call.receiveText()
-    val scripts =
-        try {
-            parseScriptNameSet(scriptsRaw)
-        } catch (t: Throwable) {
-            return call.respondText(t.message ?: "invalid script names", status = HttpStatusCode.BadRequest)
-        }
-
-    val created =
-        try {
-            security.subTokens.create(name, scripts)
-        } catch (t: Throwable) {
-            return call.respondText(t.message ?: "failed to create subtoken", status = HttpStatusCode.Conflict)
-        }
-
-    call.respondText(subTokenItemJson(created, includeToken = true), contentType = ContentType.Application.Json, status = HttpStatusCode.Created)
-}
-
-private suspend fun handleSubTokenUpdate(call: io.ktor.server.application.ApplicationCall, security: HostSecurity) {
-    val name = call.parameters["name"]
-        ?: return call.respondText("missing subtoken name", status = HttpStatusCode.BadRequest)
-
-    val scriptsRaw = call.receiveText()
-    val scripts =
-        try {
-            parseScriptNameSet(scriptsRaw)
-        } catch (t: Throwable) {
-            return call.respondText(t.message ?: "invalid script names", status = HttpStatusCode.BadRequest)
-        }
-
-    val updated =
-        try {
-            security.subTokens.update(name, scripts)
-        } catch (t: Throwable) {
-            return call.respondText(t.message ?: "failed to update subtoken", status = HttpStatusCode.NotFound)
-        }
-
-    call.respondText(subTokenItemJson(updated, includeToken = true), contentType = ContentType.Application.Json)
-}
-
-private suspend fun handleSubTokenGet(call: io.ktor.server.application.ApplicationCall, security: HostSecurity) {
-    val name = call.parameters["name"]
-        ?: return call.respondText("missing subtoken name", status = HttpStatusCode.BadRequest)
-
-    val item = security.subTokens.get(name)
-        ?: return call.respondText("subtoken not found: $name", status = HttpStatusCode.NotFound)
-
-    call.respondText(subTokenItemJson(item, includeToken = true), contentType = ContentType.Application.Json)
-}
-
-private suspend fun handleSubTokenDelete(call: io.ktor.server.application.ApplicationCall, security: HostSecurity) {
-    val name = call.parameters["name"]
-        ?: return call.respondText("missing subtoken name", status = HttpStatusCode.BadRequest)
-
-    val deleted = security.subTokens.delete(name)
-    if (!deleted) return call.respondText("subtoken not found: $name", status = HttpStatusCode.NotFound)
-
-    call.respondText("deleted subtoken: $name")
-}
-
-fun Application.webModule(scriptsDir: File, security: HostSecurity, runConcurrencyLimiter: Semaphore) {
-    routing {
-        get("/health") {
-            call.respondText("OK")
-        }
-
-        get("/type") {
-            val auth = requireAuth(call, security) ?: return@get
-            call.respondText(tokenTypeJson(auth), contentType = ContentType.Application.Json)
-        }
-
-        get("/scripts") {
-            val auth = requireAuth(call, security) ?: return@get
-            val allow = visibleScriptsFor(auth)
-            call.respondText(renderScriptList(scriptsDir, allow), ContentType.Text.Plain)
-        }
-
-        get("/scripts/{script}") {
-            val auth = requireAuth(call, security) ?: return@get
-            if (!requireRoot(call, auth)) return@get
-            handleGetScriptContent(call, scriptsDir)
-        }
-
-        post("/scripts/{script}") {
-            val auth = requireAuth(call, security) ?: return@post
-            if (!requireRoot(call, auth)) return@post
-            handleCreateScript(call, scriptsDir)
-        }
-
-        put("/scripts/{script}") {
-            val auth = requireAuth(call, security) ?: return@put
-            if (!requireRoot(call, auth)) return@put
-            handleUpdateScript(call, scriptsDir)
-        }
-
-        delete("/scripts/{script}") {
-            val auth = requireAuth(call, security) ?: return@delete
-            if (!requireRoot(call, auth)) return@delete
-            handleDeleteScript(call, scriptsDir)
-        }
-
-        get("/meta/{script}") {
-            val auth = requireAuth(call, security) ?: return@get
-            val name = call.parameters["script"]
-                ?: return@get call.respondText("missing route name", status = HttpStatusCode.BadRequest)
-
-            if (!requireScriptAccess(call, auth, name)) return@get
-
-            val script = resolveScriptFile(scriptsDir, name)
-                ?: return@get call.respondText("invalid script name", status = HttpStatusCode.BadRequest)
-            if (!script.exists()) {
-                return@get call.respondText("script not found: ${script.name}", status = HttpStatusCode.NotFound)
-            }
-
-            val (metadata, source) = loadMetadata(script)
-            call.respondText(
-                metadataJson(name, metadata, source),
-                contentType = ContentType.Application.Json,
-            )
-        }
-
-        get("/run/{script}") {
-            val auth = requireAuth(call, security) ?: return@get
-            val name = call.parameters["script"]
-                ?: return@get call.respondText("missing route name", status = HttpStatusCode.BadRequest)
-            if (!requireScriptAccess(call, auth, name)) return@get
-            runConcurrencyLimiter.withPermit {
-                handleRunRequest(call, scriptsDir, consumeBody = false)
-            }
-        }
-
-        post("/run/{script}") {
-            val auth = requireAuth(call, security) ?: return@post
-            val name = call.parameters["script"]
-                ?: return@post call.respondText("missing route name", status = HttpStatusCode.BadRequest)
-            if (!requireScriptAccess(call, auth, name)) return@post
-            runConcurrencyLimiter.withPermit {
-                handleRunRequest(call, scriptsDir, consumeBody = true)
-            }
-        }
-
-        get("/subtokens") {
-            val auth = requireAuth(call, security) ?: return@get
-            if (!requireRoot(call, auth)) return@get
-            call.respondText(subTokenListJson(security.subTokens.list()), contentType = ContentType.Application.Json)
-        }
-
-        get("/subtokens/{name}") {
-            val auth = requireAuth(call, security) ?: return@get
-            if (!requireRoot(call, auth)) return@get
-            handleSubTokenGet(call, security)
-        }
-
-        post("/subtokens/{name}") {
-            val auth = requireAuth(call, security) ?: return@post
-            if (!requireRoot(call, auth)) return@post
-            handleSubTokenCreate(call, security)
-        }
-
-        put("/subtokens/{name}") {
-            val auth = requireAuth(call, security) ?: return@put
-            if (!requireRoot(call, auth)) return@put
-            handleSubTokenUpdate(call, security)
-        }
-
-        delete("/subtokens/{name}") {
-            val auth = requireAuth(call, security) ?: return@delete
-            if (!requireRoot(call, auth)) return@delete
-            handleSubTokenDelete(call, security)
-        }
-    }
-}
-
-private fun usage() {
-    println(
-        """
-Usage:
-  ./gradlew runWeb --args='[--host=0.0.0.0] [--port=8080] [--scripts-dir=./scripts] [--max-run-concurrency=N]'
-Routes:
-  GET  /health
-  GET  /type
-  Authorization:
-    Authorization: Bearer <token>
-    or X-Host-Token: <token>
-  GET  /scripts
-  GET  /scripts/{script}                      (root only)
-  POST /scripts/{script}                      (root only)
-  PUT  /scripts/{script}                      (root only)
-  DELETE /scripts/{script}                    (root only)
-  GET  /meta/{script}                         (root or allowed subtoken)
-  GET  /run/{script}?k=v                      (root or allowed subtoken)
-  POST /run/{script}?k=v                      (root or allowed subtoken)
-  GET  /subtokens                             (root only)
-  GET  /subtokens/{name}                      (root only)
-  POST /subtokens/{name}                      (root only, body: script names list)
-  PUT  /subtokens/{name}                      (root only, body: script names list)
-  DELETE /subtokens/{name}                    (root only)
-        """.trimIndent(),
-    )
-}
-
-private fun List<String>.optionValue(prefix: String): String? =
-    firstOrNull { it.startsWith(prefix) }?.substringAfter("=")
-
-fun main(args: Array<String>) {
-    val cli = args.toList()
-
-    if ("--help" in cli || "-h" in cli) {
-        usage()
-        return
-    }
-
-    val port = cli.optionValue("--port=")?.toIntOrNull() ?: DEFAULT_PORT
-    val host = cli.optionValue("--host=")?.ifBlank { DEFAULT_HOST } ?: DEFAULT_HOST
-    val scriptsDir = File(cli.optionValue("--scripts-dir=") ?: DEFAULT_SCRIPTS_DIR).absoluteFile
-    val maxRunConcurrency = cli.optionValue("--max-run-concurrency=")?.toIntOrNull() ?: DEFAULT_MAX_RUN_CONCURRENCY
-    require(maxRunConcurrency > 0) { "--max-run-concurrency must be > 0" }
-
-    if (!scriptsDir.exists()) scriptsDir.mkdirs()
-    val auth = loadOrCreateApiToken(scriptsDir)
-    val security = createHostSecurity(scriptsDir, auth.token)
-    val runConcurrencyLimiter = Semaphore(maxRunConcurrency)
-
-    println("Starting script web host on http://$host:$port")
-    println("Scripts directory: ${scriptsDir.absolutePath}")
-    println("Run concurrency limit: $maxRunConcurrency")
-    println("Auth token source: ${auth.source}")
-    when {
-        auth.source.startsWith("env:") -> println("Auth token loaded from environment variable.")
-        auth.source.startsWith("generated:") ->
-            println("Auth token generated and saved to: ${auth.tokenFile?.absolutePath}")
-
-        else -> println("Auth token loaded from file: ${auth.tokenFile?.absolutePath}")
-    }
-
-    embeddedServer(Netty, port = port, host = host) {
-        webModule(scriptsDir, security, runConcurrencyLimiter)
-    }.start(wait = true)
-}

src/main/kotlin/work/slhaf/hub/script/ScriptEngine.kt

@@ -0,0 +1,314 @@
+package work.slhaf.hub
+
+import kotlinx.coroutines.runBlocking
+import java.io.ByteArrayOutputStream
+import java.io.File
+import java.io.PrintStream
+import java.util.concurrent.ConcurrentHashMap
+import java.util.concurrent.Executors
+import java.util.concurrent.TimeUnit
+import java.util.concurrent.TimeoutException
+import kotlin.script.experimental.api.*
+import kotlin.script.experimental.dependencies.*
+import kotlin.script.experimental.dependencies.maven.MavenDependenciesResolver
+import kotlin.script.experimental.host.toScriptSource
+import kotlin.script.experimental.jvm.JvmDependency
+import kotlin.script.experimental.jvm.jvm
+import kotlin.script.experimental.jvm.updateClasspath
+import kotlin.script.experimental.jvmhost.BasicJvmScriptingHost
+
+private val scriptingHost = BasicJvmScriptingHost()
+private val evalLock = Any()
+private val compiledScriptCache = ConcurrentHashMap<String, Pair<String, CompiledScript>>() // key -> stamp, compiled script
+
+private val resolver = CompoundDependenciesResolver(FileSystemDependenciesResolver(), MavenDependenciesResolver())
+private val argsDeclarationRegexes = listOf(
+    Regex("""^\s*val\s+args\s*:\s*Array<String>\s*=\s*emptyArray\(\)\s*$"""),
+    Regex("""^\s*lateinit\s+var\s+args\s*:\s*Array<String>\s*$"""),
+)
+private val evalExecutor = Executors.newCachedThreadPool { r ->
+    Thread(r, "script-eval-worker").apply { isDaemon = true }
+}
+
+fun explicitClasspathFromEnv(): List<File>? {
+    val value = System.getenv("HOST_SCRIPT_CLASSPATH") ?: return null
+    if (value.isBlank()) return null
+    return value.split(File.pathSeparator).filter { it.isNotBlank() }.map(::File)
+}
+
+private fun runtimeClasspathFromJavaProperty(): List<File> {
+    val raw = System.getProperty("java.class.path").orEmpty()
+    if (raw.isBlank()) return emptyList()
+    return raw
+        .split(File.pathSeparator)
+        .asSequence()
+        .filter { it.isNotBlank() }
+        .map(::File)
+        .filter { it.exists() }
+        .distinctBy { it.absolutePath }
+        .toList()
+}
+
+private fun configureMavenDepsOnAnnotations(
+    context: ScriptConfigurationRefinementContext
+): ResultWithDiagnostics<ScriptCompilationConfiguration> {
+    val annotations = context.collectedData
+        ?.get(ScriptCollectedData.collectedAnnotations)
+        ?.takeIf { it.isNotEmpty() }
+        ?: return context.compilationConfiguration.asSuccess()
+
+    return runBlocking {
+        resolver.resolveFromScriptSourceAnnotations(annotations)
+    }.onSuccess { files ->
+        context.compilationConfiguration.with {
+            dependencies.append(JvmDependency(files))
+        }.asSuccess()
+    }
+}
+
+private fun compilationConfiguration(explicitCp: List<File>?): ScriptCompilationConfiguration {
+    return ScriptCompilationConfiguration {
+        baseClass(SimpleScript::class)
+        defaultImports(DependsOn::class, Repository::class)
+
+        jvm {
+            val runtimeCp = runtimeClasspathFromJavaProperty()
+            updateClasspath((explicitCp ?: emptyList()) + runtimeCp)
+        }
+
+        refineConfiguration {
+            onAnnotations(DependsOn::class, Repository::class, handler = ::configureMavenDepsOnAnnotations)
+        }
+    }
+}
+
+private fun injectArgsBridgeDeclaration(scriptContent: String): String {
+    val lines = scriptContent.lines()
+    val injected = "val args: Array<String> = hostArgs"
+    var replaced = false
+    val result = lines.map { line ->
+        if (!replaced && argsDeclarationRegexes.any { it.matches(line) }) {
+            replaced = true
+            injected
+        } else {
+            line
+        }
+    }
+    return result.joinToString("\n")
+}
+
+private fun parseArgEntry(raw: String): Pair<String, String>? {
+    val idx = raw.indexOf('=')
+    if (idx <= 0) return null
+    return raw.substring(0, idx) to raw.substring(idx + 1)
+}
+
+private fun applyDefaultArgs(metadata: ScriptMetadata, requestArgs: List<String>): List<String> {
+    val existingKeys = requestArgs.mapNotNull { parseArgEntry(it)?.first }.toMutableSet()
+    val merged = requestArgs.toMutableList()
+    metadata.params.forEach { param ->
+        if (!existingKeys.contains(param.name) && param.defaultValue != null) {
+            merged += "${param.name}=${param.defaultValue}"
+            existingKeys += param.name
+        }
+    }
+    return merged
+}
+
+private fun compileSource(source: SourceCode): ResultWithDiagnostics<CompiledScript> {
+    val explicitCp = explicitClasspathFromEnv()
+    return runBlocking {
+        scriptingHost.compiler(source, compilationConfiguration(explicitCp))
+    }
+}
+
+private fun evalCompiled(compiledScript: CompiledScript, requestContext: ScriptRequestContext): ResultWithDiagnostics<EvaluationResult> {
+    val evaluationConfiguration = ScriptEvaluationConfiguration {
+        constructorArgs(requestContext.args.toTypedArray())
+    }
+    return runBlocking {
+        scriptingHost.evaluator(compiledScript, evaluationConfiguration)
+    }
+}
+
+private fun compiledScriptFor(scriptFile: File, preparedContent: String): ResultWithDiagnostics<CompiledScript> {
+    val key = scriptFile.canonicalPath
+    val stamp = scriptStamp(scriptFile)
+    val cached = compiledScriptCache[key]
+    if (cached != null && cached.first == stamp) {
+        return cached.second.asSuccess()
+    }
+
+    val compiled = compileSource(preparedContent.toScriptSource(scriptFile.name))
+    if (compiled is ResultWithDiagnostics.Success) {
+        compiledScriptCache[key] = stamp to compiled.value
+    }
+    return compiled
+}
+
+data class ScriptExecutionResult(
+    val ok: Boolean,
+    val output: String,
+    val metadata: ScriptMetadata,
+    val missingRequiredParams: List<String>,
+    val timedOut: Boolean = false,
+)
+
+fun removeCachedMetadata(scriptFile: File) {
+    clearMetadataCache(scriptFile)
+    compiledScriptCache.remove(scriptFile.canonicalPath)
+}
+
+fun validateCompilationAndCapture(scriptFile: File): ScriptExecutionResult {
+    synchronized(evalLock) {
+        val oldOut = System.out
+        val oldErr = System.err
+        val buffer = ByteArrayOutputStream()
+        val ps = PrintStream(buffer, true, Charsets.UTF_8.name())
+
+        return try {
+            System.setOut(ps)
+            System.setErr(ps)
+
+            val original = scriptFile.readText()
+            val metadata = metadataForFile(scriptFile, original)
+            val injected = injectArgsBridgeDeclaration(original)
+            val compilationResult = compiledScriptFor(scriptFile, injected)
+            val reports = compilationResult.reports
+            val hasErrorDiagnostics = reports.any {
+                it.severity == ScriptDiagnostic.Severity.ERROR || it.severity == ScriptDiagnostic.Severity.FATAL
+            }
+            val diagnostics = reports
+                .filter { it.severity > ScriptDiagnostic.Severity.DEBUG }
+                .joinToString("\n") {
+                    val ex = it.exception?.let { e -> ": ${e::class.simpleName}: ${e.message}" } ?: ""
+                    "[${it.severity}] ${it.message}$ex"
+                }
+
+            val output = buffer.toString(Charsets.UTF_8.name()).trim()
+            val finalText = buildString {
+                if (output.isNotEmpty()) appendLine(output)
+                if (diagnostics.isNotEmpty()) appendLine(diagnostics)
+            }.trim()
+
+            ScriptExecutionResult(
+                ok = compilationResult is ResultWithDiagnostics.Success && !hasErrorDiagnostics,
+                output = finalText,
+                metadata = metadata,
+                missingRequiredParams = emptyList(),
+                timedOut = false,
+            )
+        } finally {
+            ps.flush()
+            ps.close()
+            System.setOut(oldOut)
+            System.setErr(oldErr)
+        }
+    }
+}
+
+fun evalAndCapture(scriptFile: File, requestContext: ScriptRequestContext = ScriptRequestContext()): ScriptExecutionResult {
+    return evalAndCapture(scriptFile, requestContext, enforceRequiredParams = true)
+}
+
+fun evalAndCapture(
+    scriptFile: File,
+    requestContext: ScriptRequestContext = ScriptRequestContext(),
+    enforceRequiredParams: Boolean,
+): ScriptExecutionResult {
+    synchronized(evalLock) {
+        val oldOut = System.out
+        val oldErr = System.err
+        val buffer = ByteArrayOutputStream()
+        val ps = PrintStream(buffer, true, Charsets.UTF_8.name())
+
+        return try {
+            System.setOut(ps)
+            System.setErr(ps)
+
+            val original = scriptFile.readText()
+            val metadata = metadataForFile(scriptFile, original)
+            val missingRequired = metadata.params
+                .filter { p ->
+                    p.required && requestContext.args.none { token ->
+                        token.substringBefore("=", missingDelimiterValue = "") == p.name
+                    }
+                }
+                .map { it.name }
+            val effectiveArgs = applyDefaultArgs(metadata, requestContext.args)
+
+            val injected = injectArgsBridgeDeclaration(original)
+            val compilationResult = compiledScriptFor(scriptFile, injected)
+            val evaluationResult = if (compilationResult is ResultWithDiagnostics.Success) {
+                evalCompiled(compilationResult.value, requestContext.copy(args = effectiveArgs))
+            } else {
+                null
+            }
+            val reports = evaluationResult?.reports ?: compilationResult.reports
+            val returnValueError = (evaluationResult as? ResultWithDiagnostics.Success)
+                ?.value
+                ?.returnValue as? ResultValue.Error
+            val hasErrorDiagnostics = reports.any {
+                it.severity == ScriptDiagnostic.Severity.ERROR || it.severity == ScriptDiagnostic.Severity.FATAL
+            }
+            val diagnostics = reports
+                .filter { it.severity > ScriptDiagnostic.Severity.DEBUG }
+                .joinToString("\n") {
+                    val ex = it.exception?.let { e -> ": ${e::class.simpleName}: ${e.message}" } ?: ""
+                    "[${it.severity}] ${it.message}$ex"
+                }
+            val missingMessage = if (!enforceRequiredParams || missingRequired.isEmpty()) "" else
+                "[ERROR] Missing required parameters: ${missingRequired.joinToString(", ")}"
+
+            val output = buffer.toString(Charsets.UTF_8.name()).trim()
+            val finalText = buildString {
+                if (output.isNotEmpty()) appendLine(output)
+                if (returnValueError != null) appendLine("[ERROR] ${returnValueError.error::class.simpleName}: ${returnValueError.error.message}")
+                if (diagnostics.isNotEmpty()) appendLine(diagnostics)
+                if (missingMessage.isNotEmpty()) appendLine(missingMessage)
+            }.trim()
+
+            ScriptExecutionResult(
+                ok = compilationResult is ResultWithDiagnostics.Success &&
+                    evaluationResult is ResultWithDiagnostics.Success &&
+                    !hasErrorDiagnostics &&
+                    returnValueError == null &&
+                    (!enforceRequiredParams || missingRequired.isEmpty()),
+                output = finalText,
+                metadata = metadata,
+                missingRequiredParams = missingRequired,
+                timedOut = false,
+            )
+        } finally {
+            ps.flush()
+            ps.close()
+            System.setOut(oldOut)
+            System.setErr(oldErr)
+        }
+    }
+}
+
+fun evalAndCaptureWithTimeout(
+    scriptFile: File,
+    requestContext: ScriptRequestContext = ScriptRequestContext(),
+    timeoutMs: Long,
+    enforceRequiredParams: Boolean = true,
+): ScriptExecutionResult {
+    val boundedTimeout = timeoutMs.coerceAtLeast(1)
+    val future = evalExecutor.submit<ScriptExecutionResult> {
+        evalAndCapture(scriptFile, requestContext, enforceRequiredParams = enforceRequiredParams)
+    }
+    return try {
+        future.get(boundedTimeout, TimeUnit.MILLISECONDS)
+    } catch (_: TimeoutException) {
+        future.cancel(true)
+        val metadata = loadMetadataFromComments(scriptFile)
+        ScriptExecutionResult(
+            ok = false,
+            output = "[ERROR] Script execution timed out after ${boundedTimeout}ms",
+            metadata = metadata,
+            missingRequiredParams = emptyList(),
+            timedOut = true,
+        )
+    }
+}

src/main/kotlin/work/slhaf/hub/script/ScriptMetadataEngine.kt

@@ -0,0 +1,194 @@
+package work.slhaf.hub
+
+import java.io.File
+import java.util.concurrent.ConcurrentHashMap
+
+private val metadataCache = ConcurrentHashMap<String, Pair<String, ScriptMetadata>>() // key -> stamp, metadata
+private const val DEFAULT_SCRIPT_TIMEOUT_MS = 10_000L
+private val metadataParamNameRegex = Regex("[A-Za-z0-9._-]+")
+private val supportedResponseValues = setOf("text", "json", "html")
+
+internal fun scriptStamp(file: File): String = "${file.length()}-${file.lastModified()}"
+
+private fun parseMetadataFromComments(scriptContent: String): ScriptMetadata {
+    var description: String? = null
+    var timeoutMs = DEFAULT_SCRIPT_TIMEOUT_MS
+    var responseType = ScriptResponseType.TEXT
+    val params = mutableListOf<ScriptParamDefinition>()
+
+    scriptContent.lines().forEach { raw ->
+        val line = raw.trim()
+        if (!line.startsWith("//")) return@forEach
+
+        val comment = line.removePrefix("//").trim()
+        if (comment.startsWith("@desc:", ignoreCase = true)) {
+            description = comment.substringAfter(":").trim().takeIf { it.isNotBlank() }
+            return@forEach
+        }
+        if (comment.startsWith("@timeout:", ignoreCase = true)) {
+            val raw = comment.substringAfter(":").trim()
+            parseTimeoutMs(raw)?.let { timeoutMs = it }
+            return@forEach
+        }
+        if (comment.startsWith("@response:", ignoreCase = true)) {
+            val raw = comment.substringAfter(":").trim().lowercase()
+            responseType = when (raw) {
+                "json" -> ScriptResponseType.JSON
+                "html" -> ScriptResponseType.HTML
+                else -> ScriptResponseType.TEXT
+            }
+            return@forEach
+        }
+        if (comment.startsWith("@param:", ignoreCase = true)) {
+            val payload = comment.substringAfter(":").trim()
+            if (payload.isBlank()) return@forEach
+
+            val parts = payload.split("|").map { it.trim() }.filter { it.isNotBlank() }
+            if (parts.isEmpty()) return@forEach
+
+            val name = parts.first()
+            var required = false
+            var defaultValue: String? = null
+            var desc: String? = null
+
+            parts.drop(1).forEach { part ->
+                when {
+                    part.equals("required", ignoreCase = true) -> required = true
+                    part.startsWith("required=", ignoreCase = true) ->
+                        required = part.substringAfter("=").trim().equals("true", ignoreCase = true)
+                    part.startsWith("default=", ignoreCase = true) ->
+                        defaultValue = part.substringAfter("=").trim().ifBlank { null }
+                    part.startsWith("desc=", ignoreCase = true) ->
+                        desc = part.substringAfter("=").trim().ifBlank { null }
+                }
+            }
+
+            params += ScriptParamDefinition(
+                name = name,
+                required = required,
+                defaultValue = defaultValue,
+                description = desc
+            )
+        }
+    }
+
+    return ScriptMetadata(
+        description = description,
+        params = params,
+        timeoutMs = timeoutMs,
+        responseType = responseType,
+    )
+}
+
+fun validateScriptMetadata(scriptContent: String): List<String> {
+    val errors = mutableListOf<String>()
+    val seenParams = mutableSetOf<String>()
+
+    scriptContent.lines().forEachIndexed { idx, raw ->
+        val lineNo = idx + 1
+        val line = raw.trim()
+        if (!line.startsWith("//")) return@forEachIndexed
+
+        val comment = line.removePrefix("//").trim()
+        if (comment.startsWith("@timeout:", ignoreCase = true)) {
+            val rawTimeout = comment.substringAfter(":").trim()
+            if (parseTimeoutMs(rawTimeout) == null) {
+                errors += "line $lineNo: invalid @timeout '$rawTimeout'. expected format: '@timeout: 10s' or '500ms' or '1m'."
+            }
+            return@forEachIndexed
+        }
+        if (comment.startsWith("@response:", ignoreCase = true)) {
+            val rawResponse = comment.substringAfter(":").trim().lowercase()
+            if (rawResponse !in supportedResponseValues) {
+                errors += "line $lineNo: invalid @response '$rawResponse'. expected one of: text, json, html."
+            }
+            return@forEachIndexed
+        }
+
+        if (comment.startsWith("@param:", ignoreCase = true)) {
+            val payload = comment.substringAfter(":").trim()
+            if (payload.isBlank()) {
+                errors += "line $lineNo: empty @param. expected format: '@param: name | required=true|false | default=value | desc=text'."
+                return@forEachIndexed
+            }
+
+            val parts = payload.split("|").map { it.trim() }.filter { it.isNotBlank() }
+            if (parts.isEmpty()) {
+                errors += "line $lineNo: invalid @param. expected format: '@param: name | required=true|false | default=value | desc=text'."
+                return@forEachIndexed
+            }
+
+            val name = parts.first()
+            if (!metadataParamNameRegex.matches(name)) {
+                errors += "line $lineNo: invalid param name '$name'. allowed pattern: [A-Za-z0-9._-]+."
+            }
+            if (!seenParams.add(name)) {
+                errors += "line $lineNo: duplicate @param name '$name'. param names must be unique."
+            }
+
+            var hasRequiredOption = false
+            parts.drop(1).forEach { part ->
+                when {
+                    part.equals("required", ignoreCase = true) -> {
+                        hasRequiredOption = true
+                    }
+                    part.startsWith("required=", ignoreCase = true) -> {
+                        hasRequiredOption = true
+                        val v = part.substringAfter("=").trim()
+                        if (!v.equals("true", ignoreCase = true) && !v.equals("false", ignoreCase = true)) {
+                            errors += "line $lineNo: invalid required value '$v'. expected true/false."
+                        }
+                    }
+                    part.startsWith("default=", ignoreCase = true) -> Unit
+                    part.startsWith("desc=", ignoreCase = true) -> Unit
+                    else -> {
+                        errors += "line $lineNo: unsupported @param option '$part'. supported: required=, default=, desc=."
+                    }
+                }
+            }
+            if (!hasRequiredOption) {
+                errors += "line $lineNo: missing required option. expected '@param: name | required=true|false | default=value | desc=text'."
+            }
+        }
+    }
+
+    return errors
+}
+
+private fun parseTimeoutMs(raw: String): Long? {
+    if (raw.isBlank()) return null
+    val v = raw.trim().lowercase()
+    return when {
+        v.endsWith("ms") -> v.removeSuffix("ms").trim().toLongOrNull()
+        v.endsWith("s") -> v.removeSuffix("s").trim().toLongOrNull()?.times(1000)
+        v.endsWith("m") -> v.removeSuffix("m").trim().toLongOrNull()?.times(60_000)
+        else -> v.toLongOrNull()?.times(1000)
+    }?.takeIf { it > 0 }
+}
+
+internal fun metadataForFile(scriptFile: File, scriptContent: String): ScriptMetadata {
+    val key = scriptFile.canonicalPath
+    val stamp = scriptStamp(scriptFile)
+    val cached = metadataCache[key]
+    if (cached != null && cached.first == stamp) return cached.second
+
+    val parsed = parseMetadataFromComments(scriptContent)
+    metadataCache[key] = stamp to parsed
+    return parsed
+}
+
+fun cachedMetadata(scriptFile: File): ScriptMetadata? {
+    val key = scriptFile.canonicalPath
+    val cached = metadataCache[key] ?: return null
+    val currentStamp = scriptStamp(scriptFile)
+    return if (cached.first == currentStamp) cached.second else null
+}
+
+internal fun clearMetadataCache(scriptFile: File) {
+    metadataCache.remove(scriptFile.canonicalPath)
+}
+
+fun loadMetadataFromComments(scriptFile: File): ScriptMetadata {
+    val content = scriptFile.readText()
+    return metadataForFile(scriptFile, content)
+}

src/main/kotlin/work/slhaf/hub/script/ScriptRuntime.kt

@@ -1,5 +1,11 @@
 package work.slhaf.hub
 
+enum class ScriptResponseType {
+    TEXT,
+    JSON,
+    HTML,
+}
+
 data class ScriptParamDefinition(
     val name: String,
     val required: Boolean = false,
@@ -11,6 +17,7 @@ data class ScriptMetadata(
     val description: String? = null,
     val params: List<ScriptParamDefinition> = emptyList(),
     val timeoutMs: Long = 10_000L,
+    val responseType: ScriptResponseType = ScriptResponseType.TEXT,
 )
 
 data class ScriptRequestContext(

src/main/kotlin/work/slhaf/hub/script/SimpleScriptDef.kt

@@ -3,4 +3,6 @@ package work.slhaf.hub
 import kotlin.script.experimental.annotations.KotlinScript
 
 @KotlinScript(fileExtension = "hub.kts")
-abstract class SimpleScript
+abstract class SimpleScript(
+    val hostArgs: Array<String> = emptyArray(),
+)

src/main/kotlin/work/slhaf/hub/web/WebHost.kt

@@ -0,0 +1,83 @@
+package work.slhaf.hub
+
+import io.ktor.server.engine.embeddedServer
+import io.ktor.server.netty.Netty
+import kotlinx.coroutines.sync.Semaphore
+import java.io.File
+
+private const val DEFAULT_PORT = 8080
+private const val DEFAULT_SCRIPTS_DIR = "scripts"
+private const val DEFAULT_HOST = "0.0.0.0"
+private val DEFAULT_MAX_RUN_CONCURRENCY = Runtime.getRuntime().availableProcessors().coerceAtLeast(1)
+
+private fun usage() {
+    println(
+        """
+Usage:
+  ./gradlew runWeb --args='[--host=0.0.0.0] [--port=8080] [--scripts-dir=./scripts] [--max-run-concurrency=N]'
+Routes:
+  GET  /health
+  GET  /type
+  GET  /u/{subtoken_name}@{subtoken}/type      (subtoken path auth)
+  Authorization:
+    Authorization: Bearer <token>
+    or X-Host-Token: <token>
+  GET  /scripts
+  GET  /u/{subtoken_name}@{subtoken}/scripts   (subtoken path auth)
+  GET  /scripts/{script}                      (root only)
+  POST /scripts/{script}                      (root only)
+  PUT  /scripts/{script}                      (root only)
+  DELETE /scripts/{script}                    (root only)
+  GET  /meta/{script}                         (root or allowed subtoken)
+  GET  /u/{subtoken_name}@{subtoken}/meta/{script}
+  GET  /run/{script}?k=v                      (root or allowed subtoken)
+  GET  /u/{subtoken_name}@{subtoken}/run/{script}?k=v
+  POST /run/{script}?k=v                      (root or allowed subtoken)
+  POST /u/{subtoken_name}@{subtoken}/run/{script}?k=v
+  GET  /subtokens                             (root only)
+  GET  /subtokens/{name}                      (root only)
+  POST /subtokens/{name}                      (root only, body: script names list)
+  PUT  /subtokens/{name}                      (root only, body: script names list)
+  DELETE /subtokens/{name}                    (root only)
+        """.trimIndent(),
+    )
+}
+
+private fun List<String>.optionValue(prefix: String): String? =
+    firstOrNull { it.startsWith(prefix) }?.substringAfter("=")
+
+fun main(args: Array<String>) {
+    val cli = args.toList()
+
+    if ("--help" in cli || "-h" in cli) {
+        usage()
+        return
+    }
+
+    val port = cli.optionValue("--port=")?.toIntOrNull() ?: DEFAULT_PORT
+    val host = cli.optionValue("--host=")?.ifBlank { DEFAULT_HOST } ?: DEFAULT_HOST
+    val scriptsDir = File(cli.optionValue("--scripts-dir=") ?: DEFAULT_SCRIPTS_DIR).absoluteFile
+    val maxRunConcurrency = cli.optionValue("--max-run-concurrency=")?.toIntOrNull() ?: DEFAULT_MAX_RUN_CONCURRENCY
+    require(maxRunConcurrency > 0) { "--max-run-concurrency must be > 0" }
+
+    if (!scriptsDir.exists()) scriptsDir.mkdirs()
+    val auth = loadOrCreateApiToken(scriptsDir)
+    val security = createHostSecurity(scriptsDir, auth.token)
+    val runConcurrencyLimiter = Semaphore(maxRunConcurrency)
+
+    println("Starting script web host on http://$host:$port")
+    println("Scripts directory: ${scriptsDir.absolutePath}")
+    println("Run concurrency limit: $maxRunConcurrency")
+    println("Auth token source: ${auth.source}")
+    when {
+        auth.source.startsWith("env:") -> println("Auth token loaded from environment variable.")
+        auth.source.startsWith("generated:") ->
+            println("Auth token generated and saved to: ${auth.tokenFile?.absolutePath}")
+
+        else -> println("Auth token loaded from file: ${auth.tokenFile?.absolutePath}")
+    }
+
+    embeddedServer(Netty, port = port, host = host) {
+        webModule(scriptsDir, security, runConcurrencyLimiter)
+    }.start(wait = true)
+}

src/main/kotlin/work/slhaf/hub/web/WebRoutes.kt

@@ -0,0 +1,398 @@
+package work.slhaf.hub
+
+import io.ktor.http.ContentType
+import io.ktor.http.HttpStatusCode
+import io.ktor.server.application.Application
+import io.ktor.server.application.ApplicationCall
+import io.ktor.server.application.call
+import io.ktor.server.request.httpMethod
+import io.ktor.server.request.path
+import io.ktor.server.request.receiveText
+import io.ktor.server.response.respondText
+import io.ktor.server.routing.Routing
+import io.ktor.server.routing.delete
+import io.ktor.server.routing.get
+import io.ktor.server.routing.post
+import io.ktor.server.routing.put
+import io.ktor.server.routing.routing
+import kotlinx.coroutines.sync.Semaphore
+import kotlinx.coroutines.sync.withPermit
+import org.slf4j.LoggerFactory
+import java.io.File
+
+private val requestLogger = LoggerFactory.getLogger("work.slhaf.hub.RequestAudit")
+private val subTokenPathRegex = Regex("^/u/([^/]+)/")
+
+private fun sanitizeRequestPath(path: String): String {
+    val match = subTokenPathRegex.find(path) ?: return path
+    val credential = match.groupValues[1]
+    val at = credential.indexOf('@')
+    if (at <= 0 || at == credential.lastIndex) return path
+    val nameOnly = credential.substring(0, at)
+    return path.replaceFirst("/u/$credential/", "/u/$nameOnly@***/")
+}
+
+private suspend inline fun withRequestAudit(
+    call: ApplicationCall,
+    endpoint: String,
+    authProvider: () -> AuthContext? = { null },
+    crossinline block: suspend () -> Unit,
+) {
+    val startNs = System.nanoTime()
+    var thrown: Throwable? = null
+    try {
+        block()
+    } catch (t: Throwable) {
+        thrown = t
+        throw t
+    } finally {
+        val durationMs = (System.nanoTime() - startNs) / 1_000_000
+        val auth = authProvider()
+        val tokenType = auth?.type?.name?.lowercase() ?: "none"
+        val subToken = auth?.subTokenName ?: "-"
+        val script = call.parameters["script"] ?: "-"
+        val sanitizedPath = sanitizeRequestPath(call.request.path())
+        val status = call.response.status()?.value ?: if (thrown == null) 200 else 500
+        if (thrown == null) {
+            requestLogger.info(
+                "endpoint={} method={} path={} status={} durationMs={} tokenType={} subToken={} script={}",
+                endpoint,
+                call.request.httpMethod.value,
+                sanitizedPath,
+                status,
+                durationMs,
+                tokenType,
+                subToken,
+                script,
+            )
+        } else {
+            requestLogger.warn(
+                "endpoint={} method={} path={} status={} durationMs={} tokenType={} subToken={} script={} error={}",
+                endpoint,
+                call.request.httpMethod.value,
+                sanitizedPath,
+                status,
+                durationMs,
+                tokenType,
+                subToken,
+                script,
+                "${thrown::class.simpleName}: ${thrown.message}",
+            )
+        }
+    }
+}
+
+private suspend fun handleSubTokenCreate(call: ApplicationCall, security: HostSecurity) {
+    val name = call.parameters["name"]
+        ?: return call.respondText("missing subtoken name", status = HttpStatusCode.BadRequest)
+
+    if (!name.matches(Regex("[A-Za-z0-9._-]+"))) {
+        return call.respondText("invalid subtoken name", status = HttpStatusCode.BadRequest)
+    }
+
+    val scriptsRaw = call.receiveText()
+    val scripts =
+        try {
+            parseScriptNameSet(scriptsRaw)
+        } catch (t: Throwable) {
+            return call.respondText(t.message ?: "invalid script names", status = HttpStatusCode.BadRequest)
+        }
+
+    val created =
+        try {
+            security.subTokens.create(name, scripts)
+        } catch (t: Throwable) {
+            return call.respondText(t.message ?: "failed to create subtoken", status = HttpStatusCode.Conflict)
+        }
+
+    call.respondText(subTokenItemJson(created, includeToken = true), contentType = ContentType.Application.Json, status = HttpStatusCode.Created)
+}
+
+private suspend fun handleSubTokenUpdate(call: ApplicationCall, security: HostSecurity) {
+    val name = call.parameters["name"]
+        ?: return call.respondText("missing subtoken name", status = HttpStatusCode.BadRequest)
+
+    val scriptsRaw = call.receiveText()
+    val scripts =
+        try {
+            parseScriptNameSet(scriptsRaw)
+        } catch (t: Throwable) {
+            return call.respondText(t.message ?: "invalid script names", status = HttpStatusCode.BadRequest)
+        }
+
+    val updated =
+        try {
+            security.subTokens.update(name, scripts)
+        } catch (t: Throwable) {
+            return call.respondText(t.message ?: "failed to update subtoken", status = HttpStatusCode.NotFound)
+        }
+
+    call.respondText(subTokenItemJson(updated, includeToken = true), contentType = ContentType.Application.Json)
+}
+
+private suspend fun handleSubTokenGet(call: ApplicationCall, security: HostSecurity) {
+    val name = call.parameters["name"]
+        ?: return call.respondText("missing subtoken name", status = HttpStatusCode.BadRequest)
+
+    val item = security.subTokens.get(name)
+        ?: return call.respondText("subtoken not found: $name", status = HttpStatusCode.NotFound)
+
+    call.respondText(subTokenItemJson(item, includeToken = true), contentType = ContentType.Application.Json)
+}
+
+private suspend fun handleSubTokenDelete(call: ApplicationCall, security: HostSecurity) {
+    val name = call.parameters["name"]
+        ?: return call.respondText("missing subtoken name", status = HttpStatusCode.BadRequest)
+
+    val deleted = security.subTokens.delete(name)
+    if (!deleted) return call.respondText("subtoken not found: $name", status = HttpStatusCode.NotFound)
+
+    call.respondText("deleted subtoken: $name")
+}
+
+private suspend fun handleTypeForAuth(call: ApplicationCall, auth: AuthContext) {
+    call.respondText(tokenTypeJson(auth), contentType = ContentType.Application.Json)
+}
+
+private suspend fun handleScriptsForAuth(call: ApplicationCall, scriptsDir: File, auth: AuthContext) {
+    val allow = visibleScriptsFor(auth)
+    call.respondText(renderScriptList(scriptsDir, allow), ContentType.Text.Plain)
+}
+
+private suspend fun handleMetaForAuth(call: ApplicationCall, scriptsDir: File, auth: AuthContext) {
+    val name = call.parameters["script"]
+        ?: return call.respondText("missing route name", status = HttpStatusCode.BadRequest)
+    if (!requireScriptAccess(call, auth, name)) return
+
+    val script = resolveScriptFile(scriptsDir, name)
+        ?: return call.respondText("invalid script name", status = HttpStatusCode.BadRequest)
+    if (!script.exists()) {
+        return call.respondText("script not found: ${script.name}", status = HttpStatusCode.NotFound)
+    }
+
+    val (metadata, source) = loadMetadata(script)
+    call.respondText(
+        metadataJson(name, metadata, source),
+        contentType = ContentType.Application.Json,
+    )
+}
+
+private suspend fun handleRunForAuth(
+    call: ApplicationCall,
+    scriptsDir: File,
+    auth: AuthContext,
+    runConcurrencyLimiter: Semaphore,
+    consumeBody: Boolean,
+) {
+    val name = call.parameters["script"]
+        ?: return call.respondText("missing route name", status = HttpStatusCode.BadRequest)
+    if (!requireScriptAccess(call, auth, name)) return
+    runConcurrencyLimiter.withPermit {
+        handleRunRequest(call, scriptsDir, consumeBody = consumeBody)
+    }
+}
+
+private fun Routing.registerHeaderAuthenticatedRoutes(
+    scriptsDir: File,
+    security: HostSecurity,
+    runConcurrencyLimiter: Semaphore,
+) {
+    get("/type") {
+        var authForLog: AuthContext? = null
+        withRequestAudit(call, "type", { authForLog }) {
+            val auth = requireAuth(call, security) ?: return@withRequestAudit
+            authForLog = auth
+            handleTypeForAuth(call, auth)
+        }
+    }
+
+    get("/scripts") {
+        var authForLog: AuthContext? = null
+        withRequestAudit(call, "scripts.list", { authForLog }) {
+            val auth = requireAuth(call, security) ?: return@withRequestAudit
+            authForLog = auth
+            handleScriptsForAuth(call, scriptsDir, auth)
+        }
+    }
+
+    get("/meta/{script}") {
+        var authForLog: AuthContext? = null
+        withRequestAudit(call, "meta.get", { authForLog }) {
+            val auth = requireAuth(call, security) ?: return@withRequestAudit
+            authForLog = auth
+            handleMetaForAuth(call, scriptsDir, auth)
+        }
+    }
+
+    get("/run/{script}") {
+        var authForLog: AuthContext? = null
+        withRequestAudit(call, "run.get", { authForLog }) {
+            val auth = requireAuth(call, security) ?: return@withRequestAudit
+            authForLog = auth
+            handleRunForAuth(call, scriptsDir, auth, runConcurrencyLimiter, consumeBody = false)
+        }
+    }
+
+    post("/run/{script}") {
+        var authForLog: AuthContext? = null
+        withRequestAudit(call, "run.post", { authForLog }) {
+            val auth = requireAuth(call, security) ?: return@withRequestAudit
+            authForLog = auth
+            handleRunForAuth(call, scriptsDir, auth, runConcurrencyLimiter, consumeBody = true)
+        }
+    }
+}
+
+private fun Routing.registerSubTokenPathRoutes(
+    scriptsDir: File,
+    security: HostSecurity,
+    runConcurrencyLimiter: Semaphore,
+) {
+    get("/u/{subAuth}/type") {
+        var authForLog: AuthContext? = null
+        withRequestAudit(call, "u.type", { authForLog }) {
+            val auth = requireSubTokenPathAuth(call, security) ?: return@withRequestAudit
+            authForLog = auth
+            handleTypeForAuth(call, auth)
+        }
+    }
+
+    get("/u/{subAuth}/scripts") {
+        var authForLog: AuthContext? = null
+        withRequestAudit(call, "u.scripts.list", { authForLog }) {
+            val auth = requireSubTokenPathAuth(call, security) ?: return@withRequestAudit
+            authForLog = auth
+            handleScriptsForAuth(call, scriptsDir, auth)
+        }
+    }
+
+    get("/u/{subAuth}/meta/{script}") {
+        var authForLog: AuthContext? = null
+        withRequestAudit(call, "u.meta.get", { authForLog }) {
+            val auth = requireSubTokenPathAuth(call, security) ?: return@withRequestAudit
+            authForLog = auth
+            handleMetaForAuth(call, scriptsDir, auth)
+        }
+    }
+
+    get("/u/{subAuth}/run/{script}") {
+        var authForLog: AuthContext? = null
+        withRequestAudit(call, "u.run.get", { authForLog }) {
+            val auth = requireSubTokenPathAuth(call, security) ?: return@withRequestAudit
+            authForLog = auth
+            handleRunForAuth(call, scriptsDir, auth, runConcurrencyLimiter, consumeBody = false)
+        }
+    }
+
+    post("/u/{subAuth}/run/{script}") {
+        var authForLog: AuthContext? = null
+        withRequestAudit(call, "u.run.post", { authForLog }) {
+            val auth = requireSubTokenPathAuth(call, security) ?: return@withRequestAudit
+            authForLog = auth
+            handleRunForAuth(call, scriptsDir, auth, runConcurrencyLimiter, consumeBody = true)
+        }
+    }
+}
+
+fun Application.webModule(scriptsDir: File, security: HostSecurity, runConcurrencyLimiter: Semaphore) {
+    routing {
+        get("/health") {
+            withRequestAudit(call, "health") {
+                call.respondText("OK")
+            }
+        }
+
+        registerHeaderAuthenticatedRoutes(scriptsDir, security, runConcurrencyLimiter)
+        registerSubTokenPathRoutes(scriptsDir, security, runConcurrencyLimiter)
+
+        get("/scripts/{script}") {
+            var authForLog: AuthContext? = null
+            withRequestAudit(call, "scripts.get", { authForLog }) {
+                val auth = requireAuth(call, security) ?: return@withRequestAudit
+                authForLog = auth
+                if (!requireRoot(call, auth)) return@withRequestAudit
+                handleGetScriptContent(call, scriptsDir)
+            }
+        }
+
+        post("/scripts/{script}") {
+            var authForLog: AuthContext? = null
+            withRequestAudit(call, "scripts.create", { authForLog }) {
+                val auth = requireAuth(call, security) ?: return@withRequestAudit
+                authForLog = auth
+                if (!requireRoot(call, auth)) return@withRequestAudit
+                handleCreateScript(call, scriptsDir)
+            }
+        }
+
+        put("/scripts/{script}") {
+            var authForLog: AuthContext? = null
+            withRequestAudit(call, "scripts.update", { authForLog }) {
+                val auth = requireAuth(call, security) ?: return@withRequestAudit
+                authForLog = auth
+                if (!requireRoot(call, auth)) return@withRequestAudit
+                handleUpdateScript(call, scriptsDir)
+            }
+        }
+
+        delete("/scripts/{script}") {
+            var authForLog: AuthContext? = null
+            withRequestAudit(call, "scripts.delete", { authForLog }) {
+                val auth = requireAuth(call, security) ?: return@withRequestAudit
+                authForLog = auth
+                if (!requireRoot(call, auth)) return@withRequestAudit
+                handleDeleteScript(call, scriptsDir)
+            }
+        }
+
+        get("/subtokens") {
+            var authForLog: AuthContext? = null
+            withRequestAudit(call, "subtokens.list", { authForLog }) {
+                val auth = requireAuth(call, security) ?: return@withRequestAudit
+                authForLog = auth
+                if (!requireRoot(call, auth)) return@withRequestAudit
+                call.respondText(subTokenListJson(security.subTokens.list()), contentType = ContentType.Application.Json)
+            }
+        }
+
+        get("/subtokens/{name}") {
+            var authForLog: AuthContext? = null
+            withRequestAudit(call, "subtokens.get", { authForLog }) {
+                val auth = requireAuth(call, security) ?: return@withRequestAudit
+                authForLog = auth
+                if (!requireRoot(call, auth)) return@withRequestAudit
+                handleSubTokenGet(call, security)
+            }
+        }
+
+        post("/subtokens/{name}") {
+            var authForLog: AuthContext? = null
+            withRequestAudit(call, "subtokens.create", { authForLog }) {
+                val auth = requireAuth(call, security) ?: return@withRequestAudit
+                authForLog = auth
+                if (!requireRoot(call, auth)) return@withRequestAudit
+                handleSubTokenCreate(call, security)
+            }
+        }
+
+        put("/subtokens/{name}") {
+            var authForLog: AuthContext? = null
+            withRequestAudit(call, "subtokens.update", { authForLog }) {
+                val auth = requireAuth(call, security) ?: return@withRequestAudit
+                authForLog = auth
+                if (!requireRoot(call, auth)) return@withRequestAudit
+                handleSubTokenUpdate(call, security)
+            }
+        }
+
+        delete("/subtokens/{name}") {
+            var authForLog: AuthContext? = null
+            withRequestAudit(call, "subtokens.delete", { authForLog }) {
+                val auth = requireAuth(call, security) ?: return@withRequestAudit
+                authForLog = auth
+                if (!requireRoot(call, auth)) return@withRequestAudit
+                handleSubTokenDelete(call, security)
+            }
+        }
+    }
+}

src/main/kotlin/work/slhaf/hub/web/WebScriptService.kt

@@ -59,6 +59,7 @@ private fun metadataValidationMessage(errors: List<String>): String =
         appendLine("examples:")
         appendLine("// @desc: Demo greeting API")
         appendLine("// @timeout: 10s")
+        appendLine("// @response: text")
         appendLine("// @param: name | required=false | default=world | desc=Name to greet")
     }.trim()
 
@@ -92,12 +93,20 @@ private fun runFailureMessage(result: ScriptExecutionResult): String {
 
 fun metadataJson(scriptName: String, metadata: ScriptMetadata, source: String): String {
     val description = metadata.description?.let { "\"${it.jsonEscaped()}\"" } ?: "null"
+    val responseType = metadata.responseType.name.lowercase()
     val params = metadata.params.joinToString(",") { param ->
         val defaultValue = param.defaultValue?.let { "\"${it.jsonEscaped()}\"" } ?: "null"
         val desc = param.description?.let { "\"${it.jsonEscaped()}\"" } ?: "null"
         """{"name":"${param.name.jsonEscaped()}","required":${param.required},"defaultValue":$defaultValue,"description":$desc}"""
     }
-    return """{"script":"${scriptName.jsonEscaped()}","source":"${source.jsonEscaped()}","description":$description,"timeoutMs":${metadata.timeoutMs},"params":[$params]}"""
+    return """{"script":"${scriptName.jsonEscaped()}","source":"${source.jsonEscaped()}","description":$description,"timeoutMs":${metadata.timeoutMs},"responseType":"$responseType","params":[$params]}"""
+}
+
+private fun contentTypeFor(metadata: ScriptMetadata): ContentType =
+    when (metadata.responseType) {
+        ScriptResponseType.TEXT -> ContentType.Text.Plain
+        ScriptResponseType.JSON -> ContentType.Application.Json
+        ScriptResponseType.HTML -> ContentType.Text.Html
     }
 
 fun loadMetadata(script: File): Pair<ScriptMetadata, String> {
@@ -133,7 +142,7 @@ suspend fun handleCreateScript(call: ApplicationCall, scriptsDir: File) {
     script.writeText(content)
     removeCachedMetadata(script)
 
-    val result = evalAndCapture(script, ScriptRequestContext(), enforceRequiredParams = false)
+    val result = validateCompilationAndCapture(script)
     if (!result.ok) {
         script.delete()
         removeCachedMetadata(script)
@@ -197,7 +206,7 @@ suspend fun handleUpdateScript(call: ApplicationCall, scriptsDir: File) {
     script.writeText(newContent)
     removeCachedMetadata(script)
 
-    val result = evalAndCapture(script, ScriptRequestContext(), enforceRequiredParams = false)
+    val result = validateCompilationAndCapture(script)
     if (!result.ok) {
         script.writeText(previousContent)
         removeCachedMetadata(script)
@@ -255,7 +264,7 @@ suspend fun handleRunRequest(call: ApplicationCall, scriptsDir: File, consumeBod
             runFailureMessage(result)
         },
         status = status,
-        contentType = ContentType.Text.Plain
+        contentType = if (result.ok) contentTypeFor(metadata) else ContentType.Text.Plain
     )
 }
 

src/main/kotlin/work/slhaf/hub/web/WebSecurity.kt

@@ -8,7 +8,7 @@ import io.ktor.server.response.respondText
 import java.io.File
 import java.security.SecureRandom
 
-private const val ENV_API_TOKEN = "HOST_API_TOKEN"
+private const val ENV_API_TOKEN = "SLHAF_HUB_TOKEN"
 private const val TOKEN_FILE_NAME = ".host-api-token"
 private const val SUBTOKEN_FILE_NAME = ".host-subtokens.db"
 private const val ALT_TOKEN_HEADER = "X-Host-Token"
@@ -62,6 +62,13 @@ class SubTokenStore(
             byName.values.firstOrNull { it.token == token }
         }
 
+    fun findByNameAndToken(name: String, token: String): SubTokenRecord? =
+        synchronized(lock) {
+            ensureLoaded()
+            val record = byName[name] ?: return null
+            if (record.token == token) record else null
+        }
+
     fun create(name: String, scripts: Set<String>): SubTokenRecord {
         synchronized(lock) {
             ensureLoaded()
@@ -198,6 +205,23 @@ private fun authenticateToken(call: ApplicationCall, security: HostSecurity): Au
     return AuthContext(type = TokenType.SUB, subTokenName = sub.name, allowedScripts = sub.scripts)
 }
 
+private fun parseSubTokenPathCredential(raw: String?): Pair<String, String>? {
+    val value = raw?.trim().orEmpty()
+    if (value.isBlank()) return null
+    val at = value.indexOf('@')
+    if (at <= 0 || at == value.lastIndex) return null
+    val name = value.substring(0, at).trim()
+    val token = value.substring(at + 1).trim()
+    if (!name.matches(SCRIPT_NAME_REGEX) || token.isBlank()) return null
+    return name to token
+}
+
+fun authenticateSubTokenPath(pathCredential: String?, security: HostSecurity): AuthContext? {
+    val (name, token) = parseSubTokenPathCredential(pathCredential) ?: return null
+    val sub = security.subTokens.findByNameAndToken(name, token) ?: return null
+    return AuthContext(type = TokenType.SUB, subTokenName = sub.name, allowedScripts = sub.scripts)
+}
+
 suspend fun requireAuth(call: ApplicationCall, security: HostSecurity): AuthContext? {
     val context = authenticateToken(call, security)
     if (context != null) return context
@@ -207,6 +231,21 @@ suspend fun requireAuth(call: ApplicationCall, security: HostSecurity): AuthCont
     return null
 }
 
+suspend fun requireSubTokenPathAuth(
+    call: ApplicationCall,
+    security: HostSecurity,
+    pathParamName: String = "subAuth",
+): AuthContext? {
+    val context = authenticateSubTokenPath(call.parameters[pathParamName], security)
+    if (context != null) return context
+    call.respondText(
+        "unauthorized subtoken path, expected /u/<subtoken_name>@<subtoken>/...",
+        status = HttpStatusCode.Unauthorized,
+        contentType = ContentType.Text.Plain,
+    )
+    return null
+}
+
 suspend fun requireRoot(call: ApplicationCall, context: AuthContext): Boolean {
     if (context.type == TokenType.ROOT) return true
     call.respondText("forbidden: root token required", status = HttpStatusCode.Forbidden, contentType = ContentType.Text.Plain)

src/test/kotlin/work/slhaf/hub/WebHostApiTest.kt

@@ -1,271 +0,0 @@
-package work.slhaf.hub
-
-import io.ktor.client.request.delete
-import io.ktor.client.request.get
-import io.ktor.client.request.post
-import io.ktor.client.request.put
-import io.ktor.client.request.setBody
-import io.ktor.client.statement.bodyAsText
-import io.ktor.http.HttpHeaders
-import io.ktor.http.HttpStatusCode
-import io.ktor.server.testing.testApplication
-import kotlinx.coroutines.sync.Semaphore
-import kotlin.io.path.createTempDirectory
-import kotlin.io.path.writeText
-import kotlin.test.AfterTest
-import kotlin.test.Test
-import kotlin.test.assertEquals
-import kotlin.test.assertFalse
-import kotlin.test.assertNotNull
-import kotlin.test.assertTrue
-
-class WebHostApiTest {
-    private val tempDirs = mutableListOf<java.nio.file.Path>()
-
-    @AfterTest
-    fun cleanup() {
-        tempDirs.forEach { path ->
-            runCatching { path.toFile().deleteRecursively() }
-        }
-        tempDirs.clear()
-    }
-
-    @Test
-    fun healthAndUnauthorized() = withApp { _ ->
-        val health = client.get("/health")
-        assertEquals(HttpStatusCode.OK, health.status)
-        assertEquals("OK", health.bodyAsText())
-
-        val scripts = client.get("/scripts")
-        assertEquals(HttpStatusCode.Unauthorized, scripts.status)
-        assertTrue(scripts.bodyAsText().contains("unauthorized"))
-    }
-
-    @Test
-    fun scriptCrudMetaRunAndValidation() = withApp { scriptsDir ->
-        val create = client.post("/scripts/demo") {
-            bearerRoot()
-            setBody(
-                """
-                // @desc: demo api
-                // @timeout: 10s
-                // @param: name | required=false | default=world | desc=Name to greet
-                val args: Array<String> = emptyArray()
-                val kv = args.mapNotNull {
-                    val i = it.indexOf('=')
-                    if (i <= 0) null else it.substring(0, i) to it.substring(i + 1)
-                }.toMap()
-                println("hi " + (kv["name"] ?: "world"))
-                """.trimIndent()
-            )
-        }
-        assertEquals(HttpStatusCode.Created, create.status)
-
-        val list = client.get("/scripts") { bearerRoot() }
-        assertEquals(HttpStatusCode.OK, list.status)
-        assertTrue(list.bodyAsText().contains("demo"))
-
-        val source = client.get("/scripts/demo") { bearerRoot() }
-        assertEquals(HttpStatusCode.OK, source.status)
-        assertTrue(source.bodyAsText().contains("@desc: demo api"))
-
-        val meta = client.get("/meta/demo") { bearerRoot() }
-        assertEquals(HttpStatusCode.OK, meta.status)
-        val metaText = meta.bodyAsText()
-        assertTrue(metaText.contains("\"script\":\"demo\""))
-        assertTrue(metaText.contains("\"timeoutMs\":10000"))
-
-        val run = client.get("/run/demo?name=Alice") { bearerRoot() }
-        assertEquals(HttpStatusCode.OK, run.status)
-        assertTrue(run.bodyAsText().contains("hi Alice"))
-
-        val invalidUpdate = client.put("/scripts/demo") {
-            bearerRoot()
-            setBody(
-                """
-                // @desc: bad metadata
-                // @param: user name | required=maybe | xxx=1
-                val args: Array<String> = emptyArray()
-                println("bad")
-                """.trimIndent()
-            )
-        }
-        assertEquals(HttpStatusCode.BadRequest, invalidUpdate.status)
-        val invalidText = invalidUpdate.bodyAsText()
-        assertTrue(invalidText.contains("metadata validation failed"))
-        assertTrue(invalidText.contains("examples:"))
-        assertTrue(invalidText.contains("@param:"))
-
-        val remove = client.delete("/scripts/demo") { bearerRoot() }
-        assertEquals(HttpStatusCode.OK, remove.status)
-
-        assertFalse((scriptsDir.resolve("demo.hub.kts")).toFile().exists())
-    }
-
-    @Test
-    fun subTokenAccessControlAndFiltering() = withApp { scriptsDir ->
-        scriptsDir.resolve("allowed.hub.kts").writeText(
-            """
-            // @desc: allowed script
-            val args: Array<String> = emptyArray()
-            println("allowed")
-            """.trimIndent()
-        )
-        scriptsDir.resolve("blocked.hub.kts").writeText(
-            """
-            // @desc: blocked script
-            val args: Array<String> = emptyArray()
-            println("blocked")
-            """.trimIndent()
-        )
-
-        val createSub = client.post("/subtokens/demo-sub") {
-            bearerRoot()
-            setBody("allowed")
-        }
-        assertEquals(HttpStatusCode.Created, createSub.status)
-        val token = extractJsonField(createSub.bodyAsText(), "token")
-        assertNotNull(token)
-
-        val type = client.get("/type") { bearer(token) }
-        assertEquals(HttpStatusCode.OK, type.status)
-        val typeText = type.bodyAsText()
-        assertTrue(typeText.contains("\"tokenType\":\"sub\""))
-        assertTrue(typeText.contains("\"subTokenName\":\"demo-sub\""))
-
-        val scripts = client.get("/scripts") { bearer(token) }
-        assertEquals(HttpStatusCode.OK, scripts.status)
-        val scriptList = scripts.bodyAsText()
-        assertTrue(scriptList.contains("allowed"))
-        assertFalse(scriptList.contains("blocked"))
-
-        val metaAllowed = client.get("/meta/allowed") { bearer(token) }
-        assertEquals(HttpStatusCode.OK, metaAllowed.status)
-
-        val metaBlocked = client.get("/meta/blocked") { bearer(token) }
-        assertEquals(HttpStatusCode.Forbidden, metaBlocked.status)
-
-        val runAllowed = client.get("/run/allowed") { bearer(token) }
-        assertEquals(HttpStatusCode.OK, runAllowed.status)
-
-        val runBlocked = client.get("/run/blocked") { bearer(token) }
-        assertEquals(HttpStatusCode.Forbidden, runBlocked.status)
-
-        val createScript = client.post("/scripts/not-allowed") {
-            bearer(token)
-            setBody("val args: Array<String> = emptyArray()\nprintln(\"x\")")
-        }
-        assertEquals(HttpStatusCode.Forbidden, createScript.status)
-
-        val listSubTokens = client.get("/subtokens") { bearer(token) }
-        assertEquals(HttpStatusCode.Forbidden, listSubTokens.status)
-    }
-
-    @Test
-    fun runTimeoutReturnsRequestTimeout() = withApp { _ ->
-        val create = client.post("/scripts/slow") {
-            bearerRoot()
-            setBody(
-                """
-                // @desc: slow script
-                // @timeout: 1ms
-                val args: Array<String> = emptyArray()
-                Thread.sleep(100)
-                println("done")
-                """.trimIndent()
-            )
-        }
-        assertEquals(HttpStatusCode.Created, create.status)
-
-        val run = client.get("/run/slow") { bearerRoot() }
-        assertEquals(HttpStatusCode.RequestTimeout, run.status)
-        assertTrue(run.bodyAsText().contains("timed out"))
-    }
-
-    @Test
-    fun metadataRequiresExplicitRequiredField() = withApp { _ ->
-        val create = client.post("/scripts/badmeta") {
-            bearerRoot()
-            setBody(
-                """
-                // @desc: bad metadata
-                // @param: name | default=world | desc=missing required
-                val args: Array<String> = emptyArray()
-                println("ok")
-                """.trimIndent()
-            )
-        }
-        assertEquals(HttpStatusCode.BadRequest, create.status)
-        val body = create.bodyAsText()
-        assertTrue(body.contains("metadata validation failed"))
-        assertTrue(body.contains("missing required option"))
-    }
-
-    @Test
-    fun runErrorResponseIncludesParamsAndRequiredCheck() = withApp { _ ->
-        val create = client.post("/scripts/runner") {
-            bearerRoot()
-            setBody(
-                """
-                // @desc: run test
-                // @param: must | required=true | default=world | desc=Must be provided explicitly
-                // @param: boom | required=false | default=false | desc=Trigger runtime failure
-                val args: Array<String> = emptyArray()
-                val kv = args.mapNotNull {
-                    val i = it.indexOf('=')
-                    if (i <= 0) null else it.substring(0, i) to it.substring(i + 1)
-                }.toMap()
-                if ((kv["boom"] ?: "false").equals("true", ignoreCase = true)) {
-                    error("boom")
-                }
-                println("must=" + (kv["must"] ?: "none"))
-                """.trimIndent()
-            )
-        }
-        assertEquals(HttpStatusCode.Created, create.status)
-
-        val missingRequired = client.get("/run/runner") { bearerRoot() }
-        assertEquals(HttpStatusCode.BadRequest, missingRequired.status)
-        val missingBody = missingRequired.bodyAsText()
-        assertTrue(missingBody.contains("missing required params: must"))
-        assertTrue(missingBody.contains("params:"))
-        assertTrue(missingBody.contains("must (required=true"))
-
-        val runtimeError = client.get("/run/runner?must=ok&boom=true") { bearerRoot() }
-        assertEquals(HttpStatusCode.InternalServerError, runtimeError.status)
-        val runtimeErrorBody = runtimeError.bodyAsText()
-        assertTrue(runtimeErrorBody.contains("script execution failed"))
-        assertTrue(runtimeErrorBody.contains("params:"))
-        assertTrue(runtimeErrorBody.contains("boom (required=false"))
-    }
-
-    private fun withApp(testBlock: suspend io.ktor.server.testing.ApplicationTestBuilder.(java.nio.file.Path) -> Unit) {
-        val scriptsDir = createTempDirectory("webhost-api-test-")
-        tempDirs.add(scriptsDir)
-
-        testApplication {
-            val security = createHostSecurity(scriptsDir.toFile(), ROOT_TOKEN)
-            application {
-                webModule(scriptsDir.toFile(), security, Semaphore(4))
-            }
-            testBlock(scriptsDir)
-        }
-    }
-
-    private fun io.ktor.client.request.HttpRequestBuilder.bearer(token: String) {
-        headers.append(HttpHeaders.Authorization, "Bearer $token")
-    }
-
-    private fun io.ktor.client.request.HttpRequestBuilder.bearerRoot() {
-        bearer(ROOT_TOKEN)
-    }
-
-    private fun extractJsonField(json: String, field: String): String? {
-        val regex = Regex("\"" + Regex.escape(field) + "\":\"([^\"]*)\"")
-        return regex.find(json)?.groupValues?.getOrNull(1)
-    }
-
-    companion object {
-        private const val ROOT_TOKEN = "root-test-token"
-    }
-}

src/test/kotlin/work/slhaf/hub/web/WebAuthAndScriptApiTest.kt

@@ -0,0 +1,152 @@
+package work.slhaf.hub
+
+import io.ktor.client.request.delete
+import io.ktor.client.request.get
+import io.ktor.client.request.post
+import io.ktor.client.request.put
+import io.ktor.client.request.setBody
+import io.ktor.client.statement.bodyAsText
+import io.ktor.http.HttpStatusCode
+import kotlin.test.Test
+import kotlin.test.assertEquals
+import kotlin.test.assertFalse
+import kotlin.test.assertTrue
+
+class WebAuthAndScriptApiTest : WebHostTestSupport() {
+    @Test
+    fun healthAndUnauthorized() = withApp { _ ->
+        val health = client.get("/health")
+        assertEquals(HttpStatusCode.OK, health.status)
+        assertEquals("OK", health.bodyAsText())
+
+        val scripts = client.get("/scripts")
+        assertEquals(HttpStatusCode.Unauthorized, scripts.status)
+        assertTrue(scripts.bodyAsText().contains("unauthorized"))
+    }
+
+    @Test
+    fun scriptCrudMetaRunAndValidation() = withApp { scriptsDir ->
+        val create = client.post("/scripts/demo") {
+            bearerRoot()
+            setBody(
+                """
+                // @desc: demo api
+                // @timeout: 10s
+                // @param: name | required=false | default=world | desc=Name to greet
+                val args: Array<String> = emptyArray()
+                val kv = args.mapNotNull {
+                    val i = it.indexOf('=')
+                    if (i <= 0) null else it.substring(0, i) to it.substring(i + 1)
+                }.toMap()
+                println("hi " + (kv["name"] ?: "world"))
+                """.trimIndent()
+            )
+        }
+        assertEquals(HttpStatusCode.Created, create.status)
+
+        val list = client.get("/scripts") { bearerRoot() }
+        assertEquals(HttpStatusCode.OK, list.status)
+        assertTrue(list.bodyAsText().contains("demo"))
+
+        val source = client.get("/scripts/demo") { bearerRoot() }
+        assertEquals(HttpStatusCode.OK, source.status)
+        assertTrue(source.bodyAsText().contains("@desc: demo api"))
+
+        val meta = client.get("/meta/demo") { bearerRoot() }
+        assertEquals(HttpStatusCode.OK, meta.status)
+        val metaText = meta.bodyAsText()
+        assertTrue(metaText.contains("\"script\":\"demo\""))
+        assertTrue(metaText.contains("\"timeoutMs\":10000"))
+        assertTrue(metaText.contains("\"responseType\":\"text\""))
+
+        val run = client.get("/run/demo?name=Alice") { bearerRoot() }
+        assertEquals(HttpStatusCode.OK, run.status)
+        assertTrue(run.bodyAsText().contains("hi Alice"))
+
+        val invalidUpdate = client.put("/scripts/demo") {
+            bearerRoot()
+            setBody(
+                """
+                // @desc: bad metadata
+                // @param: user name | required=maybe | xxx=1
+                val args: Array<String> = emptyArray()
+                println("bad")
+                """.trimIndent()
+            )
+        }
+        assertEquals(HttpStatusCode.BadRequest, invalidUpdate.status)
+        val invalidText = invalidUpdate.bodyAsText()
+        assertTrue(invalidText.contains("metadata validation failed"))
+        assertTrue(invalidText.contains("examples:"))
+        assertTrue(invalidText.contains("@param:"))
+
+        val remove = client.delete("/scripts/demo") { bearerRoot() }
+        assertEquals(HttpStatusCode.OK, remove.status)
+
+        assertFalse((scriptsDir.resolve("demo.hub.kts")).toFile().exists())
+    }
+
+    @Test
+    fun metadataRequiresExplicitRequiredField() = withApp { _ ->
+        val create = client.post("/scripts/badmeta") {
+            bearerRoot()
+            setBody(
+                """
+                // @desc: bad metadata
+                // @param: name | default=world | desc=missing required
+                val args: Array<String> = emptyArray()
+                println("ok")
+                """.trimIndent()
+            )
+        }
+        assertEquals(HttpStatusCode.BadRequest, create.status)
+        val body = create.bodyAsText()
+        assertTrue(body.contains("metadata validation failed"))
+        assertTrue(body.contains("missing required option"))
+    }
+
+    @Test
+    fun metadataRejectsUnsupportedResponseType() = withApp { _ ->
+        val create = client.post("/scripts/bad-response") {
+            bearerRoot()
+            setBody(
+                """
+                // @desc: bad response
+                // @response: xml
+                // @param: name | required=false | default=world | desc=name
+                val args: Array<String> = emptyArray()
+                println("ok")
+                """.trimIndent()
+            )
+        }
+        assertEquals(HttpStatusCode.BadRequest, create.status)
+        val body = create.bodyAsText()
+        assertTrue(body.contains("metadata validation failed"))
+        assertTrue(body.contains("invalid @response"))
+        assertTrue(body.contains("text, json, html"))
+    }
+
+    @Test
+    fun createWithRequiredParamsValidatesByCompilationOnly() = withApp { _ ->
+        val create = client.post("/scripts/required-param-script") {
+            bearerRoot()
+            setBody(
+                """
+                // @desc: required param demo
+                // @param: owner | required=true | desc=Repository owner
+                lateinit var args: Array<String>
+                val owner = args.mapNotNull {
+                    val i = it.indexOf('=')
+                    if (i <= 0) null else it.substring(0, i) to it.substring(i + 1)
+                }.toMap()["owner"] ?: error("missing required param: owner")
+                println(owner)
+                """.trimIndent()
+            )
+        }
+        assertEquals(HttpStatusCode.Created, create.status)
+
+        val runMissing = client.get("/run/required-param-script") { bearerRoot() }
+        assertEquals(HttpStatusCode.BadRequest, runMissing.status)
+        assertTrue(runMissing.bodyAsText().contains("missing required params: owner"))
+    }
+}

src/test/kotlin/work/slhaf/hub/web/WebHostTestSupport.kt

@@ -0,0 +1,51 @@
+package work.slhaf.hub
+
+import io.ktor.client.request.HttpRequestBuilder
+import io.ktor.http.HttpHeaders
+import io.ktor.server.testing.ApplicationTestBuilder
+import io.ktor.server.testing.testApplication
+import kotlinx.coroutines.sync.Semaphore
+import kotlin.io.path.createTempDirectory
+import kotlin.test.AfterTest
+
+abstract class WebHostTestSupport {
+    private val tempDirs = mutableListOf<java.nio.file.Path>()
+
+    @AfterTest
+    fun cleanup() {
+        tempDirs.forEach { path ->
+            runCatching { path.toFile().deleteRecursively() }
+        }
+        tempDirs.clear()
+    }
+
+    protected fun withApp(testBlock: suspend ApplicationTestBuilder.(java.nio.file.Path) -> Unit) {
+        val scriptsDir = createTempDirectory("webhost-api-test-")
+        tempDirs.add(scriptsDir)
+
+        testApplication {
+            val security = createHostSecurity(scriptsDir.toFile(), ROOT_TOKEN)
+            application {
+                webModule(scriptsDir.toFile(), security, Semaphore(4))
+            }
+            testBlock(scriptsDir)
+        }
+    }
+
+    protected fun HttpRequestBuilder.bearer(token: String) {
+        headers.append(HttpHeaders.Authorization, "Bearer $token")
+    }
+
+    protected fun HttpRequestBuilder.bearerRoot() {
+        bearer(ROOT_TOKEN)
+    }
+
+    protected fun extractJsonField(json: String, field: String): String? {
+        val regex = Regex("\\\"" + Regex.escape(field) + "\\\":\\\"([^\\\"]*)\\\"")
+        return regex.find(json)?.groupValues?.getOrNull(1)
+    }
+
+    companion object {
+        private const val ROOT_TOKEN = "root-test-token"
+    }
+}

src/test/kotlin/work/slhaf/hub/web/WebRunApiTest.kt

@@ -0,0 +1,163 @@
+package work.slhaf.hub
+
+import io.ktor.client.request.get
+import io.ktor.client.request.post
+import io.ktor.client.request.setBody
+import io.ktor.client.statement.bodyAsText
+import io.ktor.http.HttpStatusCode
+import io.ktor.http.HttpHeaders
+import kotlin.test.Test
+import kotlin.test.assertEquals
+import kotlin.test.assertTrue
+
+class WebRunApiTest : WebHostTestSupport() {
+    @Test
+    fun runTimeoutReturnsRequestTimeout() = withApp { _ ->
+        val create = client.post("/scripts/slow") {
+            bearerRoot()
+            setBody(
+                """
+                // @desc: slow script
+                // @timeout: 1ms
+                val args: Array<String> = emptyArray()
+                Thread.sleep(100)
+                println("done")
+                """.trimIndent()
+            )
+        }
+        assertEquals(HttpStatusCode.Created, create.status)
+
+        val run = client.get("/run/slow") { bearerRoot() }
+        assertEquals(HttpStatusCode.RequestTimeout, run.status)
+        assertTrue(run.bodyAsText().contains("timed out"))
+    }
+
+    @Test
+    fun runErrorResponseIncludesParamsAndRequiredCheck() = withApp { _ ->
+        val create = client.post("/scripts/runner") {
+            bearerRoot()
+            setBody(
+                """
+                // @desc: run test
+                // @param: must | required=true | default=world | desc=Must be provided explicitly
+                // @param: boom | required=false | default=false | desc=Trigger runtime failure
+                val args: Array<String> = emptyArray()
+                val kv = args.mapNotNull {
+                    val i = it.indexOf('=')
+                    if (i <= 0) null else it.substring(0, i) to it.substring(i + 1)
+                }.toMap()
+                if ((kv["boom"] ?: "false").equals("true", ignoreCase = true)) {
+                    error("boom")
+                }
+                println("must=" + (kv["must"] ?: "none"))
+                """.trimIndent()
+            )
+        }
+        assertEquals(HttpStatusCode.Created, create.status)
+
+        val missingRequired = client.get("/run/runner") { bearerRoot() }
+        assertEquals(HttpStatusCode.BadRequest, missingRequired.status)
+        val missingBody = missingRequired.bodyAsText()
+        assertTrue(missingBody.contains("missing required params: must"))
+        assertTrue(missingBody.contains("params:"))
+        assertTrue(missingBody.contains("must (required=true"))
+
+        val runtimeError = client.get("/run/runner?must=ok&boom=true") { bearerRoot() }
+        assertEquals(HttpStatusCode.InternalServerError, runtimeError.status)
+        val runtimeErrorBody = runtimeError.bodyAsText()
+        assertTrue(runtimeErrorBody.contains("script execution failed"))
+        assertTrue(runtimeErrorBody.contains("params:"))
+        assertTrue(runtimeErrorBody.contains("boom (required=false"))
+    }
+
+    @Test
+    fun defaultParamValueIsInjectedIntoHostArgs() = withApp { _ ->
+        val create = client.post("/scripts/defaults") {
+            bearerRoot()
+            setBody(
+                """
+                // @desc: default args test
+                // @param: name | required=false | default=world | desc=Name fallback
+                val args: Array<String> = emptyArray()
+                val kv = args.mapNotNull {
+                    val i = it.indexOf('=')
+                    if (i <= 0) null else it.substring(0, i) to it.substring(i + 1)
+                }.toMap()
+                println("name=" + (kv["name"] ?: "missing"))
+                """.trimIndent()
+            )
+        }
+        assertEquals(HttpStatusCode.Created, create.status)
+
+        val runWithoutArg = client.get("/run/defaults") { bearerRoot() }
+        assertEquals(HttpStatusCode.OK, runWithoutArg.status)
+        assertTrue(runWithoutArg.bodyAsText().contains("name=world"))
+
+        val runWithArg = client.get("/run/defaults?name=alice") { bearerRoot() }
+        assertEquals(HttpStatusCode.OK, runWithArg.status)
+        assertTrue(runWithArg.bodyAsText().contains("name=alice"))
+    }
+
+    @Test
+    fun lateinitArgsDeclarationIsSupported() = withApp { _ ->
+        val create = client.post("/scripts/lateinit-args") {
+            bearerRoot()
+            setBody(
+                """
+                // @desc: lateinit args
+                // @param: name | required=false | default=world | desc=Name fallback
+                lateinit var args: Array<String>
+                val kv = args.mapNotNull {
+                    val i = it.indexOf('=')
+                    if (i <= 0) null else it.substring(0, i) to it.substring(i + 1)
+                }.toMap()
+                println("name=" + (kv["name"] ?: "missing"))
+                """.trimIndent()
+            )
+        }
+        assertEquals(HttpStatusCode.Created, create.status)
+
+        val run = client.get("/run/lateinit-args") { bearerRoot() }
+        assertEquals(HttpStatusCode.OK, run.status)
+        assertTrue(run.bodyAsText().contains("name=world"))
+    }
+
+    @Test
+    fun runSuccessContentTypeCanBeJsonOrHtml() = withApp { _ ->
+        val createJson = client.post("/scripts/json-out") {
+            bearerRoot()
+            setBody(
+                """
+                // @desc: json output
+                // @response: json
+                val args: Array<String> = emptyArray()
+                println("{\"ok\":true}")
+                """.trimIndent()
+            )
+        }
+        assertEquals(HttpStatusCode.Created, createJson.status)
+
+        val runJson = client.get("/run/json-out") { bearerRoot() }
+        assertEquals(HttpStatusCode.OK, runJson.status)
+        assertTrue((runJson.headers[HttpHeaders.ContentType] ?: "").startsWith("application/json"))
+        assertTrue(runJson.bodyAsText().contains("\"ok\":true"))
+
+        val createHtml = client.post("/scripts/html-out") {
+            bearerRoot()
+            setBody(
+                """
+                // @desc: html output
+                // @response: html
+                val args: Array<String> = emptyArray()
+                println("<h1>ok</h1>")
+                """.trimIndent()
+            )
+        }
+        assertEquals(HttpStatusCode.Created, createHtml.status)
+
+        val runHtml = client.get("/run/html-out") { bearerRoot() }
+        assertEquals(HttpStatusCode.OK, runHtml.status)
+        assertTrue((runHtml.headers[HttpHeaders.ContentType] ?: "").startsWith("text/html"))
+        assertTrue(runHtml.bodyAsText().contains("<h1>ok</h1>"))
+    }
+}

src/test/kotlin/work/slhaf/hub/web/WebSubTokenApiTest.kt

@@ -0,0 +1,98 @@
+package work.slhaf.hub
+
+import io.ktor.client.request.get
+import io.ktor.client.request.post
+import io.ktor.client.request.setBody
+import io.ktor.client.statement.bodyAsText
+import io.ktor.http.HttpStatusCode
+import kotlin.io.path.writeText
+import kotlin.test.Test
+import kotlin.test.assertEquals
+import kotlin.test.assertFalse
+import kotlin.test.assertNotNull
+import kotlin.test.assertTrue
+
+class WebSubTokenApiTest : WebHostTestSupport() {
+    @Test
+    fun subTokenAccessControlAndFiltering() = withApp { scriptsDir ->
+        scriptsDir.resolve("allowed.hub.kts").writeText(
+            """
+            // @desc: allowed script
+            val args: Array<String> = emptyArray()
+            println("allowed")
+            """.trimIndent()
+        )
+        scriptsDir.resolve("blocked.hub.kts").writeText(
+            """
+            // @desc: blocked script
+            val args: Array<String> = emptyArray()
+            println("blocked")
+            """.trimIndent()
+        )
+
+        val createSub = client.post("/subtokens/demo-sub") {
+            bearerRoot()
+            setBody("allowed")
+        }
+        assertEquals(HttpStatusCode.Created, createSub.status)
+        val token = extractJsonField(createSub.bodyAsText(), "token")
+        assertNotNull(token)
+
+        val type = client.get("/type") { bearer(token) }
+        assertEquals(HttpStatusCode.OK, type.status)
+        val typeText = type.bodyAsText()
+        assertTrue(typeText.contains("\"tokenType\":\"sub\""))
+        assertTrue(typeText.contains("\"subTokenName\":\"demo-sub\""))
+
+        val scripts = client.get("/scripts") { bearer(token) }
+        assertEquals(HttpStatusCode.OK, scripts.status)
+        val scriptList = scripts.bodyAsText()
+        assertTrue(scriptList.contains("allowed"))
+        assertFalse(scriptList.contains("blocked"))
+
+        val metaAllowed = client.get("/meta/allowed") { bearer(token) }
+        assertEquals(HttpStatusCode.OK, metaAllowed.status)
+
+        val metaBlocked = client.get("/meta/blocked") { bearer(token) }
+        assertEquals(HttpStatusCode.Forbidden, metaBlocked.status)
+
+        val runAllowed = client.get("/run/allowed") { bearer(token) }
+        assertEquals(HttpStatusCode.OK, runAllowed.status)
+
+        val runBlocked = client.get("/run/blocked") { bearer(token) }
+        assertEquals(HttpStatusCode.Forbidden, runBlocked.status)
+
+        val createScript = client.post("/scripts/not-allowed") {
+            bearer(token)
+            setBody("val args: Array<String> = emptyArray()\nprintln(\"x\")")
+        }
+        assertEquals(HttpStatusCode.Forbidden, createScript.status)
+
+        val listSubTokens = client.get("/subtokens") { bearer(token) }
+        assertEquals(HttpStatusCode.Forbidden, listSubTokens.status)
+
+        val typeByPath = client.get("/u/demo-sub@$token/type")
+        assertEquals(HttpStatusCode.OK, typeByPath.status)
+        assertTrue(typeByPath.bodyAsText().contains("\"tokenType\":\"sub\""))
+
+        val scriptsByPath = client.get("/u/demo-sub@$token/scripts")
+        assertEquals(HttpStatusCode.OK, scriptsByPath.status)
+        assertTrue(scriptsByPath.bodyAsText().contains("allowed"))
+        assertFalse(scriptsByPath.bodyAsText().contains("blocked"))
+
+        val metaByPathAllowed = client.get("/u/demo-sub@$token/meta/allowed")
+        assertEquals(HttpStatusCode.OK, metaByPathAllowed.status)
+
+        val metaByPathBlocked = client.get("/u/demo-sub@$token/meta/blocked")
+        assertEquals(HttpStatusCode.Forbidden, metaByPathBlocked.status)
+
+        val runByPathAllowed = client.get("/u/demo-sub@$token/run/allowed")
+        assertEquals(HttpStatusCode.OK, runByPathAllowed.status)
+
+        val runByPathBlocked = client.get("/u/demo-sub@$token/run/blocked")
+        assertEquals(HttpStatusCode.Forbidden, runByPathBlocked.status)
+
+        val invalidPathAuth = client.get("/u/demo-sub@invalid-token/scripts")
+        assertEquals(HttpStatusCode.Unauthorized, invalidPathAuth.status)
+    }
+}

tools/slhaf-hub-cli.kts

@@ -9,8 +9,8 @@ import java.net.http.HttpResponse
 import java.nio.charset.StandardCharsets
 import kotlin.system.exitProcess
 
-val ENV_API_BASE_URL = "HOST_API_BASE_URL"
-val ENV_API_TOKEN = "HOST_API_TOKEN"
+val ENV_API_BASE_URL = "SLHAF_HUB_BASE_URL"
+val ENV_API_TOKEN = "SLHAF_HUB_TOKEN"
 
 data class GlobalOptions(
     val baseUrl: String,
@@ -30,12 +30,13 @@ Usage:
   kotlin slhaf-hub-cli.kts [global options] <command> [command options]
 
 Global options:
-  --base-url=<url>               Default: HOST_API_BASE_URL or http://127.0.0.1:8080
+  --base-url=<url>               Default: SLHAF_HUB_BASE_URL or http://127.0.0.1:8080
   --token=<token>                Authorization token
-  --token-file=<path>            Load token from file (fallback: HOST_API_TOKEN env)
+  --token-file=<path>            Load token from file (fallback: SLHAF_HUB_TOKEN env)
 
 Commands:
   health
+  template <script>
   type
   list
   show <script>
@@ -52,6 +53,7 @@ Commands:
   sub-delete <name>
 
 Examples:
+  kotlin slhaf-hub-cli.kts template hello
   kotlin slhaf-hub-cli.kts --token-file=./scripts/.host-api-token type
   kotlin slhaf-hub-cli.kts --token-file=./scripts/.host-api-token sub-list
   kotlin slhaf-hub-cli.kts --token-file=./scripts/.host-api-token sub-create demo --scripts=hello,time
@@ -159,6 +161,23 @@ fun parseScriptsArg(args: List<String>): Set<String> {
     return items
 }
 
+fun initialScriptTemplate(name: String): String =
+    """
+// @desc: $name
+// @timeout: 10s
+// @response: text
+// @param: sample | required=false | default=value | desc=example parameter
+
+lateinit var args: Array<String>
+val kv = args.mapNotNull {
+    val i = it.indexOf('=')
+    if (i <= 0) null else it.substring(0, i) to it.substring(i + 1)
+}.toMap()
+
+println("script=$name")
+println("sample=" + (kv["sample"] ?: "value"))
+    """.trimIndent()
+
 fun request(
     client: HttpClient,
     baseUrl: String,
@@ -198,6 +217,10 @@ fun main(args: Array<String>) {
         val (status, body) =
             when (input.command) {
                 "health" -> request(client, base, null, "GET", "/health")
+                "template" -> {
+                    val script = requireScriptName(input.commandArgs)
+                    200 to initialScriptTemplate(script)
+                }
                 "type" -> request(client, base, token, "GET", "/type")
                 "list" -> request(client, base, token, "GET", "/scripts")
                 "show" -> {

tools/slhaf-hub-tui.kts

@@ -54,8 +54,8 @@ private val YELLOW = "\u001b[33m"
 private val RED = "\u001b[31m"
 private val BG_BLUE = "\u001b[44m"
 private val FG_BLACK = "\u001b[30m"
-val ENV_API_BASE_URL = "HOST_API_BASE_URL"
-val ENV_API_TOKEN = "HOST_API_TOKEN"
+val ENV_API_BASE_URL = "SLHAF_HUB_BASE_URL"
+val ENV_API_TOKEN = "SLHAF_HUB_TOKEN"
 
 private fun ok(text: String) = "$GREEN$text$RESET"
 private fun warn(text: String) = "$YELLOW$text$RESET"
@@ -81,8 +81,8 @@ Keys:
   q                  Quit
 
 Env fallback:
-  HOST_API_BASE_URL
-  HOST_API_TOKEN
+  SLHAF_HUB_BASE_URL
+  SLHAF_HUB_TOKEN
     """.trimIndent()
 
 fun parseOptions(args: List<String>): Options {
@@ -113,7 +113,7 @@ fun readToken(options: Options): String {
         return file.readText().trim()
     }
     return System.getenv(ENV_API_TOKEN)?.trim()
-        ?: error("Missing token. Use --token or --token-file or HOST_API_TOKEN")
+        ?: error("Missing token. Use --token or --token-file or SLHAF_HUB_TOKEN")
 }
 
 fun encode(value: String): String = URLEncoder.encode(value, StandardCharsets.UTF_8)
@@ -476,9 +476,10 @@ fun initialScriptTemplate(name: String): String =
     """
 // @desc: $name
 // @timeout: 10s
+// @response: text
 // @param: sample | required=false | default=value | desc=example parameter
 
-val args: Array<String> = emptyArray()
+lateinit var args: Array<String>
 val kv = args.mapNotNull {
     val i = it.indexOf('=')
     if (i <= 0) null else it.substring(0, i) to it.substring(i + 1)