diff --git a/unit-picker/src/main/kotlin/cc/unitmesh/pick/output/Instruction.kt b/unit-picker/src/main/kotlin/cc/unitmesh/pick/output/Instruction.kt
new file mode 100644
index 00000000..04a258f7
--- /dev/null
+++ b/unit-picker/src/main/kotlin/cc/unitmesh/pick/output/Instruction.kt
@@ -0,0 +1,82 @@
+package cc.unitmesh.pick.output
+
+enum class InstructionType {
+    INLINE_CODE_COMPLETION,
+    IN_BLOCK_CODE_COMPLETION,
+    AFTER_BLOCK_CODE_COMPLETION,
+    RELATED_CODE_COMPLETION,
+//    CODE_DIFF,
+//    REFACTOR,
+}
+
+sealed class Instruction(
+    val instructionType: InstructionType,
+    val instruction: String,
+    val output: String,
+) {
+    abstract fun input(): String
+}
+
+class InlineCodeCompletion(
+    instruction: String,
+    output: String,
+    val language: String,
+    val beforeCursorCode: String,
+) : Instruction(InstructionType.INLINE_CODE_COMPLETION, instruction, output) {
+    override fun input(): String {
+        return """```$language
+            |$beforeCursorCode
+            |```""".trimMargin()
+    }
+}
+
+class InBlockCodeCompletion(
+    instruction: String,
+    output: String,
+    val language: String,
+    val beforeCursorCode: String,
+    val afterCursorCode: String,
+) : Instruction(InstructionType.IN_BLOCK_CODE_COMPLETION, instruction, output) {
+    override fun input(): String {
+        return """```$language
+            |$beforeCursorCode
+            |$afterCursorCode
+            |```""".trimMargin()
+    }
+}
+
+class AfterBlockCodeCompletion(
+    instruction: String,
+    output: String,
+    val language: String,
+    val beforeCursorCode: String,
+    val afterCursorCode: String,
+) : Instruction(InstructionType.AFTER_BLOCK_CODE_COMPLETION, instruction, output) {
+    override fun input(): String {
+        return """```$language
+            |$beforeCursorCode
+            |$afterCursorCode
+            |```""".trimMargin()
+    }
+}
+
+class RelatedCodeCompletion(
+    instruction: String,
+    output: String,
+    val language: String,
+    val beforeCursorCode: String,
+    val relatedCode: String,
+) : Instruction(InstructionType.RELATED_CODE_COMPLETION, instruction, output) {
+    override fun input(): String {
+        return """
+            | Compare this snippet:
+            |```$language
+            |$relatedCode
+            |```
+            |Code:
+            |```$language
+            |$beforeCursorCode
+            |```""".trimMargin()
+    }
+}
+
diff --git a/unit-picker/src/main/kotlin/cc/unitmesh/pick/picker/ToolingPromptType.kt b/unit-picker/src/main/kotlin/cc/unitmesh/pick/picker/ToolingPromptType.kt
deleted file mode 100644
index 7f4587e0..00000000
--- a/unit-picker/src/main/kotlin/cc/unitmesh/pick/picker/ToolingPromptType.kt
+++ /dev/null
@@ -1,25 +0,0 @@
-package cc.unitmesh.pick.picker
-
-enum class ToolingPromptType {
-    /**
-     * like GitHub Copilot, use similar chunk of code to complete
-     */
-    INLINE_CODE_COMPLETION,
-
-    /**
-     * like GitHub Copilot, use similar chunk of code to complete
-     */
-    IN_BLOCK_CODE_COMPLETION,
-
-    /**
-     * like GitHub Copilot, use similar chunk of code to complete
-     */
-    AFTER_BLOCK_CODE_COMPLETION,
-
-    /**
-     * like AutoDev, use Static Program Analysis for code based on imports
-     */
-    RELATED_CODE_COMPLETION,
-    CODE_DIFF,
-    REFACTOR,
-}
\ No newline at end of file
diff --git a/unit-picker/src/main/kotlin/cc/unitmesh/pick/worker/WorkerManager.kt b/unit-picker/src/main/kotlin/cc/unitmesh/pick/worker/WorkerManager.kt
index ec3e3a71..4f9de515 100644
--- a/unit-picker/src/main/kotlin/cc/unitmesh/pick/worker/WorkerManager.kt
+++ b/unit-picker/src/main/kotlin/cc/unitmesh/pick/worker/WorkerManager.kt
@@ -1,18 +1,16 @@
 package cc.unitmesh.pick.worker
 
 import cc.unitmesh.pick.picker.PickJob
-import kotlinx.serialization.encodeToString
-import kotlinx.serialization.json.Json
 import org.archguard.rule.common.Language
 
 class WorkerManager {
     private val workers: Map<Language, LangWorker> = mapOf(
+        // todo: add more language support
         Language.JAVA to JavaLangWorker(),
     )
 
     fun addJob(job: PickJob) {
         val language = job.language.toSupportLanguage()
-//     print job serial
         val worker = workers[language]
         worker?.addJob(job)
     }