diff --git a/README.md b/README.md
index d7d3e76..71d103e 100644
--- a/README.md
+++ b/README.md
@@ -57,7 +57,8 @@
 - `GET http://127.0.0.1:3000/api/v1/user/ota/package` 正常，当前会返回最新 APK 包
 - 当前这台开发机的 `launchd` 常驻 `local-agent` 已恢复：`GET http://127.0.0.1:4317/health` 现在可在数十毫秒内返回，且在手动 heartbeat 执行期间仍能正常回包
 - 当前 Boss 已新增 `src/lib/execution/` 执行底座抽象层；当前生产主链仍然沿用 `local-agent -> codex exec resume`，只是执行责任已开始通过 `ExecutionBackend / PromptAssembler / PermissionPolicy / RemoteRuntimeAdapter / OrchestrationBackend` 默认实现收束
-- 当前 `claw-code` 与 `oh-my-codex` 仍未正式接入生产执行链；当前状态是 contract-ready，可在后续通过 adapter 方式接入
+- 当前 `claw-code` 已以最小 `ClawBackendAdapter` 形式接入执行底座，但默认关闭；只有在显式配置 `BOSS_CLAW_*` 并在 `master-agent` 当前对话里显式选择 `claw-runtime` 时才会参与执行候选
+- 当前 `oh-my-codex` 仍未正式接入生产执行链；当前状态是 orchestration-ready，后续将通过独立 adapter 接入
 - `GET http://127.0.0.1:4317/api/v1/skills` 正常，已返回本机扫描到的 Codex Skill
 - `POST http://127.0.0.1:4317/api/v1/heartbeat` 正常，且会顺带触发 `thread-context` 上报
 - `launchd` 已加载：`~/Library/LaunchAgents/com.hyzq.boss.local-agent.plist`
diff --git a/android/app/src/main/java/com/hyzq/boss/MasterAgentPromptActivity.java b/android/app/src/main/java/com/hyzq/boss/MasterAgentPromptActivity.java
index 337abfd..14cbe2f 100644
--- a/android/app/src/main/java/com/hyzq/boss/MasterAgentPromptActivity.java
+++ b/android/app/src/main/java/com/hyzq/boss/MasterAgentPromptActivity.java
@@ -4,8 +4,11 @@ import android.os.Bundle;
 import android.text.Editable;
 import android.text.TextWatcher;
 import android.text.TextUtils;
+import android.widget.AdapterView;
+import android.widget.ArrayAdapter;
 import android.widget.EditText;
 import android.widget.LinearLayout;
+import android.widget.Spinner;
 import android.widget.TextView;
 
 import androidx.annotation.Nullable;
@@ -13,6 +16,8 @@ import androidx.annotation.Nullable;
 import org.json.JSONObject;
 
 public class MasterAgentPromptActivity extends BossScreenActivity {
+    private static final String[] BACKEND_OVERRIDE_VALUES = {"", "claw-runtime"};
+    private static final String[] BACKEND_OVERRIDE_LABELS = {"默认", "Claw Runtime"};
     public static final String EXTRA_PROJECT_ID = "project_id";
     public static final String EXTRA_PROJECT_NAME = "project_name";
 
@@ -25,8 +30,10 @@ public class MasterAgentPromptActivity extends BossScreenActivity {
     private @Nullable String adminPromptText;
     private @Nullable String userPromptText;
     private @Nullable String projectPromptOverrideText;
+    private @Nullable String backendOverrideText;
     private EditText userPromptInput;
     private EditText projectPromptInput;
+    private Spinner backendSpinner;
     private TextView previewTextView;
 
     @Override
@@ -78,6 +85,7 @@ public class MasterAgentPromptActivity extends BossScreenActivity {
                 "projectPromptOverride",
                 projectControls == null ? "" : projectControls.optString("promptOverride", "")
         );
+        backendOverrideText = projectControls == null ? "" : projectControls.optString("backendOverride", "");
 
         replaceContent();
         appendContent(BossUi.buildSimpleProfileHeader(
@@ -115,6 +123,27 @@ public class MasterAgentPromptActivity extends BossScreenActivity {
                 projectPromptInput
         ));
 
+        backendSpinner = new Spinner(this);
+        backendSpinner.setAdapter(new ArrayAdapter<>(this, android.R.layout.simple_spinner_dropdown_item, BACKEND_OVERRIDE_LABELS));
+        backendSpinner.setSelection(indexOfBackendOverride(backendOverrideText));
+        backendSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
+            @Override
+            public void onItemSelected(AdapterView<?> parent, android.view.View view, int position, long id) {
+                refreshPreview();
+            }
+
+            @Override
+            public void onNothingSelected(AdapterView<?> parent) {
+                refreshPreview();
+            }
+        });
+        appendContent(BossUi.buildFormCell(
+                this,
+                "执行后端",
+                "默认沿用 Boss 当前主链；需要时可显式切到 Claw Runtime。",
+                backendSpinner
+        ));
+
         previewTextView = new TextView(this);
         previewTextView.setText(buildPreviewText());
         previewTextView.setTextSize(14);
@@ -172,6 +201,12 @@ public class MasterAgentPromptActivity extends BossScreenActivity {
         if (!TextUtils.isEmpty(projectText)) {
             builder.append("【当前对话提示词】\n").append(projectText).append("\n\n");
         }
+        String backendValue = backendSpinner == null
+                ? (backendOverrideText == null ? "" : backendOverrideText)
+                : BACKEND_OVERRIDE_VALUES[backendSpinner.getSelectedItemPosition()];
+        if (!TextUtils.isEmpty(backendValue)) {
+            builder.append("【执行后端】\n").append(backendValue).append("\n\n");
+        }
         if (builder.length() == 0) {
             return "当前没有任何提示词内容。";
         }
@@ -185,12 +220,16 @@ public class MasterAgentPromptActivity extends BossScreenActivity {
         }
         final String userContent = userPromptInput == null ? "" : userPromptInput.getText().toString();
         final String promptOverride = projectPromptInput == null ? "" : projectPromptInput.getText().toString();
+        final String backendOverride = backendSpinner == null
+                ? ""
+                : BACKEND_OVERRIDE_VALUES[backendSpinner.getSelectedItemPosition()];
         setRefreshing(true);
         executor.execute(() -> {
             try {
                 JSONObject payload = new JSONObject();
                 payload.put("userPromptContent", userContent);
                 payload.put("promptOverride", promptOverride);
+                payload.put("backendOverride", TextUtils.isEmpty(backendOverride) ? JSONObject.NULL : backendOverride);
                 BossApiClient.ApiResponse response = apiClient.updateMasterAgentPromptProfile(projectId, payload);
                 if (!response.ok()) {
                     throw new IllegalStateException(response.message());
@@ -215,4 +254,16 @@ public class MasterAgentPromptActivity extends BossScreenActivity {
             headerActionButton.setAlpha(contentLoaded ? 1f : 0.45f);
         }
     }
+
+    private int indexOfBackendOverride(@Nullable String value) {
+        if (TextUtils.isEmpty(value)) {
+            return 0;
+        }
+        for (int index = 0; index < BACKEND_OVERRIDE_VALUES.length; index += 1) {
+            if (value.equals(BACKEND_OVERRIDE_VALUES[index])) {
+                return index;
+            }
+        }
+        return 0;
+    }
 }
diff --git a/android/app/src/test/java/com/hyzq/boss/MasterAgentPromptActivityTest.java b/android/app/src/test/java/com/hyzq/boss/MasterAgentPromptActivityTest.java
index e144eb1..fd6912b 100644
--- a/android/app/src/test/java/com/hyzq/boss/MasterAgentPromptActivityTest.java
+++ b/android/app/src/test/java/com/hyzq/boss/MasterAgentPromptActivityTest.java
@@ -6,6 +6,7 @@ import static org.junit.Assert.assertTrue;
 import android.content.Intent;
 import android.view.View;
 import android.view.ViewGroup;
+import android.widget.Spinner;
 import android.widget.EditText;
 import android.widget.TextView;
 
@@ -51,7 +52,9 @@ public class MasterAgentPromptActivityTest {
         JSONObject payload = new JSONObject()
                 .put("promptPolicy", new JSONObject().put("globalPrompt", "全局主提示词"))
                 .put("userPrompt", new JSONObject().put("content", "用户私有主提示词"))
-                .put("projectControls", new JSONObject().put("promptOverride", "当前对话提示词"));
+                .put("projectControls", new JSONObject()
+                        .put("promptOverride", "当前对话提示词")
+                        .put("backendOverride", "claw-runtime"));
 
         ReflectionHelpers.callInstanceMethod(
                 activity,
@@ -64,6 +67,7 @@ public class MasterAgentPromptActivityTest {
         assertTrue(viewTreeContainsText(content, "全局主提示词"));
         assertTrue(viewTreeContainsText(content, "用户私有主提示词"));
         assertTrue(viewTreeContainsText(content, "当前对话提示词"));
+        assertTrue(viewTreeContainsText(content, "执行后端"));
         assertTrue(viewTreeContainsText(content, "合成预览"));
     }
 
@@ -91,7 +95,9 @@ public class MasterAgentPromptActivityTest {
         JSONObject payload = new JSONObject()
                 .put("promptPolicy", new JSONObject().put("globalPrompt", "全局主提示词"))
                 .put("userPrompt", new JSONObject().put("content", "用户私有主提示词"))
-                .put("projectControls", new JSONObject().put("promptOverride", "当前对话提示词"));
+                .put("projectControls", new JSONObject()
+                        .put("promptOverride", "当前对话提示词")
+                        .put("backendOverride", "claw-runtime"));
 
         ReflectionHelpers.callInstanceMethod(
                 activity,
@@ -101,14 +107,16 @@ public class MasterAgentPromptActivityTest {
 
         EditText userInput = ReflectionHelpers.getField(activity, "userPromptInput");
         EditText conversationInput = ReflectionHelpers.getField(activity, "projectPromptInput");
+        Spinner backendSpinner = ReflectionHelpers.getField(activity, "backendSpinner");
         userInput.setText("更新后的用户提示词");
         conversationInput.setText("更新后的对话提示词");
+        backendSpinner.setSelection(0);
 
         ReflectionHelpers.callInstanceMethod(activity, "savePromptProfile");
         org.robolectric.Shadows.shadowOf(android.os.Looper.getMainLooper()).idle();
 
         assertEquals(
-                "{\"userPromptContent\":\"更新后的用户提示词\",\"promptOverride\":\"更新后的对话提示词\"}",
+                "{\"userPromptContent\":\"更新后的用户提示词\",\"promptOverride\":\"更新后的对话提示词\",\"backendOverride\":null}",
                 ((ScriptedBossApiClient) ReflectionHelpers.getField(activity, "apiClient")).connection.requestBody()
         );
     }
@@ -128,7 +136,9 @@ public class MasterAgentPromptActivityTest {
         JSONObject payload = new JSONObject()
                 .put("promptPolicy", new JSONObject().put("globalPrompt", "全局主提示词"))
                 .put("userPrompt", new JSONObject().put("content", "用户私有主提示词"))
-                .put("projectControls", new JSONObject().put("promptOverride", "当前对话提示词"));
+                .put("projectControls", new JSONObject()
+                        .put("promptOverride", "当前对话提示词")
+                        .put("backendOverride", "claw-runtime"));
 
         ReflectionHelpers.callInstanceMethod(
                 activity,
diff --git a/docs/architecture/api_and_service_inventory_cn.md b/docs/architecture/api_and_service_inventory_cn.md
index 9c1d83b..4f651cc 100644
--- a/docs/architecture/api_and_service_inventory_cn.md
+++ b/docs/architecture/api_and_service_inventory_cn.md
@@ -177,7 +177,8 @@
 - 当前状态：
   - 已在生产代码中被 `boss-master-agent.ts`、`local-agent/server.mjs` 和 `master-agent task complete route` 使用
   - 当前仍服务 Boss 自身执行链
-  - 当前未直接接入 `claw-code` 或 `oh-my-codex`
+  - 当前已最小接入 `ClawBackendAdapter`，但默认关闭，仅在显式配置和显式选择时参与执行
+  - 当前尚未接入 `oh-my-codex`
 
 ### 3.2 认证相关
 
@@ -373,17 +374,18 @@
 
 #### `GET /api/v1/projects/[projectId]/agent-controls`
 
-- 用途：读取当前对话级别的 `modelOverride / reasoningEffortOverride`
+- 用途：读取当前对话级别的 `modelOverride / reasoningEffortOverride / backendOverride`
 - 当前约束：
   - 当前只支持 `projectId=master-agent`
   - 未配置时返回 `controls: null`
 
 #### `POST /api/v1/projects/[projectId]/agent-controls`
 
-- 用途：更新当前对话级别的 `modelOverride / reasoningEffortOverride`
+- 用途：更新当前对话级别的 `modelOverride / reasoningEffortOverride / promptOverride / backendOverride`
 - 当前约束：
   - 当前只支持 `projectId=master-agent`
   - 仅 `highest_admin` 可写
+  - `backendOverride` 当前仅支持 `claw-runtime`
   - 显式传 `null` 或空字符串表示清空覆盖；省略字段表示保留原值
 
 #### `GET /api/v1/projects/[projectId]/participants`
diff --git a/docs/architecture/current_runtime_and_deploy_status_cn.md b/docs/architecture/current_runtime_and_deploy_status_cn.md
index 1a2349d..98d17f7 100644
--- a/docs/architecture/current_runtime_and_deploy_status_cn.md
+++ b/docs/architecture/current_runtime_and_deploy_status_cn.md
@@ -28,7 +28,8 @@
 - `launchd` 已安装：`~/Library/LaunchAgents/com.hyzq.boss.local-agent.plist`
 - 当前执行底座抽象层已落地在 `src/lib/execution/`，并已补齐 `ExecutionBackend / PromptAssembler / PermissionPolicy / RemoteRuntimeAdapter / OrchestrationBackend` 默认实现
 - 当前生产主链仍然沿用 `local-agent -> codex exec resume -> /api/v1/master-agent/tasks/[taskId]/complete`，执行底座重构以“先抽象、不改行为”为准
-- 当前 `claw-code` 与 `oh-my-codex` 还未正式接入生产链，只是已经具备 adapter-ready 的 contract 基础
+- 当前 `claw-code` 已以最小 `ClawBackendAdapter` 形式接入执行底座，但默认关闭；只有显式配置 `BOSS_CLAW_*` 并在 `master-agent` 当前对话中选择 `claw-runtime` 时才会参与执行候选
+- 当前 `oh-my-codex` 还未正式接入生产链，只是已经具备 orchestration adapter-ready 的 contract 基础
 
 本地已知运行方式：
 
@@ -144,6 +145,7 @@ cd /Users/kris/code/boss
 - 主 Agent 当前真实对话链路已验证通过：`Boss Web -> /api/v1/projects/master-agent/messages -> master-agent task queue -> local-agent -> codex exec -> /complete -> 项目消息账本`
 - 主 Agent 单聊当前已改成“快速入队 + 异步回流”：`POST /api/v1/projects/master-agent/messages` 会先返回 `masterReplyState + task`，真实回复随后再回写消息账本
 - 当前对话级 `agentControls` 已经生效：`master-agent` 会话支持 `modelOverride / reasoningEffortOverride`，并会优先作用到实际 OpenAI 回复和 Master Codex Node 执行 prompt
+- 当前对话级 `agentControls` 也已支持 `backendOverride`：`master-agent` 会话可显式选择 `claw-runtime`，由 `ExecutionBackendSelector` 在当前对话里优先尝试对应后端
 - 原生 Android 当前会把 `master-agent` 的等待态保留在消息流里：发送后常驻显示“主 Agent 思考中”，超时后改成“主 Agent 回复超时 + 重试等待”，收到新回复后会自动清掉，不再只靠 toast 提示
 - `GET /api/v1/app-logs` 当前已支持登录态分页查询
 - `POST /api/v1/app-logs`、`POST /api/v1/devices/[deviceId]/skills`、`POST /api/v1/workers/[workerId]/thread-context` 当前都要求有效设备 token 或匹配登录会话
diff --git a/src/app/api/v1/projects/[projectId]/agent-controls/route.ts b/src/app/api/v1/projects/[projectId]/agent-controls/route.ts
index 3af497f..03972bf 100644
--- a/src/app/api/v1/projects/[projectId]/agent-controls/route.ts
+++ b/src/app/api/v1/projects/[projectId]/agent-controls/route.ts
@@ -59,6 +59,7 @@ export async function POST(
     modelOverride?: unknown;
     reasoningEffortOverride?: unknown;
     promptOverride?: unknown;
+    backendOverride?: unknown;
   };
   const hasModelOverride = Object.prototype.hasOwnProperty.call(payload, "modelOverride");
   const hasReasoningEffortOverride = Object.prototype.hasOwnProperty.call(
@@ -66,9 +67,10 @@ export async function POST(
     "reasoningEffortOverride",
   );
   const hasPromptOverride = Object.prototype.hasOwnProperty.call(payload, "promptOverride");
-  const allowedKeys = new Set(["modelOverride", "reasoningEffortOverride", "promptOverride"]);
+  const hasBackendOverride = Object.prototype.hasOwnProperty.call(payload, "backendOverride");
+  const allowedKeys = new Set(["modelOverride", "reasoningEffortOverride", "promptOverride", "backendOverride"]);
   const hasUnsupportedKeys = Object.keys(payload).some((key) => !allowedKeys.has(key));
-  if ((!hasModelOverride && !hasReasoningEffortOverride && !hasPromptOverride) || hasUnsupportedKeys) {
+  if ((!hasModelOverride && !hasReasoningEffortOverride && !hasPromptOverride && !hasBackendOverride) || hasUnsupportedKeys) {
     return NextResponse.json({ ok: false, message: "INVALID_AGENT_CONTROLS_PAYLOAD" }, { status: 400 });
   }
 
@@ -90,6 +92,14 @@ export async function POST(
   if (hasPromptOverride && payload.promptOverride !== undefined && payload.promptOverride !== null && typeof payload.promptOverride !== "string") {
     return NextResponse.json({ ok: false, message: "INVALID_PROMPT_OVERRIDE" }, { status: 400 });
   }
+  if (
+    hasBackendOverride &&
+    payload.backendOverride !== undefined &&
+    payload.backendOverride !== null &&
+    payload.backendOverride !== "claw-runtime"
+  ) {
+    return NextResponse.json({ ok: false, message: "INVALID_BACKEND_OVERRIDE" }, { status: 400 });
+  }
 
   try {
     const controls = await updateProjectAgentControls(
@@ -98,6 +108,7 @@ export async function POST(
         ...(hasModelOverride ? { modelOverride: payload.modelOverride } : {}),
         ...(hasReasoningEffortOverride ? { reasoningEffortOverride: payload.reasoningEffortOverride } : {}),
         ...(hasPromptOverride ? { promptOverride: payload.promptOverride } : {}),
+        ...(hasBackendOverride ? { backendOverride: payload.backendOverride } : {}),
       },
       session.account,
     );
diff --git a/src/app/api/v1/projects/[projectId]/prompt-profile/route.ts b/src/app/api/v1/projects/[projectId]/prompt-profile/route.ts
index 71b0e1c..905822a 100644
--- a/src/app/api/v1/projects/[projectId]/prompt-profile/route.ts
+++ b/src/app/api/v1/projects/[projectId]/prompt-profile/route.ts
@@ -71,12 +71,14 @@ export async function POST(
   const payload = body as {
     userPromptContent?: unknown;
     promptOverride?: unknown;
+    backendOverride?: unknown;
   };
   const hasUserPromptContent = Object.prototype.hasOwnProperty.call(payload, "userPromptContent");
   const hasPromptOverride = Object.prototype.hasOwnProperty.call(payload, "promptOverride");
-  const allowedKeys = new Set(["userPromptContent", "promptOverride"]);
+  const hasBackendOverride = Object.prototype.hasOwnProperty.call(payload, "backendOverride");
+  const allowedKeys = new Set(["userPromptContent", "promptOverride", "backendOverride"]);
   const hasUnsupportedKeys = Object.keys(payload).some((key) => !allowedKeys.has(key));
-  if ((!hasUserPromptContent && !hasPromptOverride) || hasUnsupportedKeys) {
+  if ((!hasUserPromptContent && !hasPromptOverride && !hasBackendOverride) || hasUnsupportedKeys) {
     return NextResponse.json({ ok: false, message: "INVALID_PROMPT_PROFILE_PAYLOAD" }, { status: 400 });
   }
   if (hasUserPromptContent && payload.userPromptContent !== undefined && payload.userPromptContent !== null && typeof payload.userPromptContent !== "string") {
@@ -85,6 +87,22 @@ export async function POST(
   if (hasPromptOverride && payload.promptOverride !== undefined && payload.promptOverride !== null && typeof payload.promptOverride !== "string") {
     return NextResponse.json({ ok: false, message: "INVALID_PROMPT_OVERRIDE" }, { status: 400 });
   }
+  if (
+    hasBackendOverride
+    && payload.backendOverride !== undefined
+    && payload.backendOverride !== null
+    && typeof payload.backendOverride !== "string"
+  ) {
+    return NextResponse.json({ ok: false, message: "INVALID_BACKEND_OVERRIDE" }, { status: 400 });
+  }
+  if (
+    hasBackendOverride
+    && typeof payload.backendOverride === "string"
+    && payload.backendOverride.trim() !== ""
+    && payload.backendOverride.trim() !== "claw-runtime"
+  ) {
+    return NextResponse.json({ ok: false, message: "INVALID_BACKEND_OVERRIDE" }, { status: 400 });
+  }
 
   try {
     if (hasUserPromptContent) {
@@ -96,9 +114,10 @@ export async function POST(
       }
     }
 
-    if (hasPromptOverride) {
+    if (hasPromptOverride || hasBackendOverride) {
       await updateProjectAgentControls(projectId, {
-        promptOverride: payload.promptOverride,
+        ...(hasPromptOverride ? { promptOverride: payload.promptOverride } : {}),
+        ...(hasBackendOverride ? { backendOverride: payload.backendOverride } : {}),
       }, session.account);
     }
 
diff --git a/src/components/master-agent-prompt-memory-client.tsx b/src/components/master-agent-prompt-memory-client.tsx
index 07a8b46..98f680b 100644
--- a/src/components/master-agent-prompt-memory-client.tsx
+++ b/src/components/master-agent-prompt-memory-client.tsx
@@ -167,6 +167,9 @@ export function MasterAgentPromptMemoryClient({
     projectControls?.reasoningEffortOverride ?? "",
   );
   const [promptOverride, setPromptOverride] = useState(projectControls?.promptOverride ?? "");
+  const [backendOverride, setBackendOverride] = useState(
+    projectControls?.backendOverride === "claw-runtime" ? "claw-runtime" : "",
+  );
   const [newMemory, setNewMemory] = useState<MemoryDraft>(makeNewMemoryDraft());
   const [memoryDrafts, setMemoryDrafts] = useState<Record<string, MemoryDraft>>(() => {
     const next: Record<string, MemoryDraft> = {};
@@ -246,6 +249,7 @@ export function MasterAgentPromptMemoryClient({
         modelOverride: modelOverride.trim() || null,
         reasoningEffortOverride: reasoningEffortOverride.trim() || null,
         promptOverride: promptOverride.trim() || null,
+        backendOverride: backendOverride.trim() || null,
       }),
     });
     const result = (await response.json()) as { ok: boolean; message?: string };
@@ -402,7 +406,7 @@ export function MasterAgentPromptMemoryClient({
             当前对话
           </span>
         </div>
-        <div className="grid gap-3 md:grid-cols-2">
+        <div className="grid gap-3 md:grid-cols-3">
           <label id={anchors.model.split("#")[1]} className="space-y-1 scroll-mt-4">
             <div className="text-[12px] text-[#8C8C8C]">模型</div>
             <select
@@ -429,6 +433,17 @@ export function MasterAgentPromptMemoryClient({
               <option value="high">high</option>
             </select>
           </label>
+          <label className="space-y-1">
+            <div className="text-[12px] text-[#8C8C8C]">执行后端</div>
+            <select
+              value={backendOverride}
+              onChange={(event) => setBackendOverride(event.target.value)}
+              className="w-full rounded-xl border border-[#E5E5EA] bg-[#F7F8FA] px-3 py-2 text-[13px] text-[#111111] outline-none"
+            >
+              <option value="">默认</option>
+              <option value="claw-runtime">Claw Runtime</option>
+            </select>
+          </label>
         </div>
         <TextArea
           label="当前对话附加提示词"
diff --git a/src/lib/boss-data.ts b/src/lib/boss-data.ts
index e72a460..52ca91c 100644
--- a/src/lib/boss-data.ts
+++ b/src/lib/boss-data.ts
@@ -378,6 +378,7 @@ export interface ProjectAgentControls {
   modelOverride?: string;
   reasoningEffortOverride?: ReasoningEffort;
   promptOverride?: string;
+  backendOverride?: "claw-runtime";
   updatedAt: string;
 }
 
@@ -1715,6 +1716,16 @@ function parseReasoningEffortOverride(value: unknown) {
   return { kind: "set" as const, value };
 }
 
+function parseBackendOverride(value: unknown) {
+  if (value === undefined || value === null) {
+    return { kind: "clear" as const };
+  }
+  if (value !== "claw-runtime") {
+    return { kind: "invalid" as const };
+  }
+  return { kind: "set" as const, value: "claw-runtime" as const };
+}
+
 function normalizeStringSet(values: string[]) {
   return dedupeStrings(values.map((value) => value.trim()).filter(Boolean)).sort((a, b) => a.localeCompare(b));
 }
@@ -2144,8 +2155,9 @@ function normalizeProjectAgentControls(
     ? raw.reasoningEffortOverride
     : undefined;
   const promptOverride = trimToDefined(raw?.promptOverride);
+  const backendOverride = raw?.backendOverride === "claw-runtime" ? raw.backendOverride : undefined;
 
-  if (!modelOverride && !reasoningEffortOverride && !promptOverride) {
+  if (!modelOverride && !reasoningEffortOverride && !promptOverride && !backendOverride) {
     return undefined;
   }
 
@@ -2153,6 +2165,7 @@ function normalizeProjectAgentControls(
     modelOverride,
     reasoningEffortOverride,
     promptOverride,
+    backendOverride,
     updatedAt: raw?.updatedAt ?? nowIso(),
   };
 }
@@ -3610,6 +3623,7 @@ export async function updateProjectAgentControls(
     modelOverride?: unknown;
     reasoningEffortOverride?: unknown;
     promptOverride?: unknown;
+    backendOverride?: unknown;
   },
   account?: string,
 ) {
@@ -3626,6 +3640,9 @@ export async function updateProjectAgentControls(
   const promptOverrideInput = Object.prototype.hasOwnProperty.call(payload, "promptOverride")
     ? parseControlTextOverride(payload.promptOverride)
     : { kind: "preserve" as const };
+  const backendOverrideInput = Object.prototype.hasOwnProperty.call(payload, "backendOverride")
+    ? parseBackendOverride(payload.backendOverride)
+    : { kind: "preserve" as const };
   if (modelOverrideInput.kind === "invalid") {
     throw new Error("INVALID_MODEL_OVERRIDE");
   }
@@ -3635,6 +3652,9 @@ export async function updateProjectAgentControls(
   if (promptOverrideInput.kind === "invalid") {
     throw new Error("INVALID_PROMPT_OVERRIDE");
   }
+  if (backendOverrideInput.kind === "invalid") {
+    throw new Error("INVALID_BACKEND_OVERRIDE");
+  }
 
   return mutateStateIfChanged((state) => {
     const project = state.projects.find((item) => item.id === projectId);
@@ -3661,14 +3681,22 @@ export async function updateProjectAgentControls(
         : promptOverrideInput.kind === "clear"
           ? undefined
           : currentControls?.promptOverride;
+    const backendOverride =
+      backendOverrideInput.kind === "set"
+        ? backendOverrideInput.value
+        : backendOverrideInput.kind === "clear"
+          ? undefined
+          : currentControls?.backendOverride;
 
     const currentModelOverride = currentControls?.modelOverride;
     const currentReasoningEffortOverride = currentControls?.reasoningEffortOverride;
     const currentPromptOverride = currentControls?.promptOverride;
+    const currentBackendOverride = currentControls?.backendOverride;
     if (
       currentModelOverride === modelOverride &&
       currentReasoningEffortOverride === reasoningEffortOverride &&
-      currentPromptOverride === promptOverride
+      currentPromptOverride === promptOverride &&
+      currentBackendOverride === backendOverride
     ) {
       return { result: currentControls, changed: false };
     }
@@ -3677,6 +3705,7 @@ export async function updateProjectAgentControls(
       modelOverride,
       reasoningEffortOverride,
       promptOverride,
+      backendOverride,
       updatedAt: nowIso(),
     } satisfies ProjectAgentControls;
     const normalizedControls = normalizeProjectAgentControls(nextControls) ?? null;
diff --git a/src/lib/boss-master-agent.ts b/src/lib/boss-master-agent.ts
index dcd1d21..ec537ab 100644
--- a/src/lib/boss-master-agent.ts
+++ b/src/lib/boss-master-agent.ts
@@ -29,6 +29,11 @@ import type {
   ReasoningEffort,
 } from "@/lib/boss-data";
 import { canInlineAttachmentText, extractAttachmentTextExcerpt } from "@/lib/boss-attachments";
+import {
+  CLAW_BACKEND_ID,
+  createClawBackend,
+  getClawBackendSelectionState,
+} from "@/lib/execution/backends/claw-backend";
 import { listExecutionBackendChoices, selectExecutionBackend } from "@/lib/execution/backend-selector";
 import { resolveRuntimeRelevantMemories } from "@/lib/execution/memory-resolver";
 import type { RelevantMemory } from "@/lib/execution/memory-resolver";
@@ -44,6 +49,7 @@ import {
 type MasterAgentReplyState = "queued" | "running" | "completed";
 const OPENAI_MASTER_AGENT_DEVICE_ID = "master-agent-openai";
 const ALIYUN_QWEN_DEVICE_ID = "master-agent-aliyun-qwen";
+const CLAW_RUNTIME_DEVICE_ID = "master-agent-claw";
 
 type ApiCompatibleProvider = Extract<AiProvider, "openai_api" | "aliyun_qwen_api">;
 
@@ -144,6 +150,7 @@ function buildAgentControlsDigest(agentControls?: ProjectAgentControls | null) {
     "当前对话覆盖：",
     `model=${agentControls.modelOverride ?? "默认"}`,
     `reasoning=${agentControls.reasoningEffortOverride ?? "默认"}`,
+    `backend=${agentControls.backendOverride ?? "默认"}`,
     `prompt=${agentControls.promptOverride ? "已配置" : "默认"}`,
   ].join(" ");
 }
@@ -456,7 +463,7 @@ interface ApiExecutionCandidate {
 }
 
 async function buildApiExecutionCandidates(params: {
-  backendChoices: Array<{ provider: AiProvider }>;
+  backendChoices: Array<{ backendId?: string; provider?: AiProvider }>;
   runtimeAccount: AiAccount;
   agentControls?: ProjectAgentControls | null;
 }) {
@@ -464,7 +471,7 @@ async function buildApiExecutionCandidates(params: {
   const seenAccountIds = new Set<string>();
 
   for (const backend of params.backendChoices) {
-    if (!isApiCompatibleProvider(backend.provider)) {
+    if (!backend.provider || !isApiCompatibleProvider(backend.provider)) {
       continue;
     }
 
@@ -492,7 +499,7 @@ async function buildApiExecutionCandidates(params: {
 }
 
 async function resolveMasterNodeExecutionCandidate(params: {
-  backendChoices: Array<{ backendId: string; provider: AiProvider }>;
+  backendChoices: Array<{ backendId: string; provider?: AiProvider }>;
   runtimeAccount: AiAccount;
 }) {
   const wantsMasterNode = params.backendChoices.some((backend) => backend.backendId === "master-codex-node");
@@ -857,6 +864,106 @@ async function enqueueOpenAiMasterAgentReply(params: {
   return queuedReply;
 }
 
+async function enqueueClawMasterAgentReply(params: {
+  requestMessageId?: string;
+  requestText: string;
+  requestedBy: string;
+  requestedByAccount: string;
+  executionPrompt: string;
+  agentControls?: ProjectAgentControls | null;
+  apiFallbackCandidates: ApiExecutionCandidate[];
+  masterFallback?: {
+    account: AiAccount;
+    executionPrompt: string;
+  } | null;
+}) {
+  const task = await queueMasterAgentTask({
+    requestMessageId: params.requestMessageId ?? "master-agent-manual",
+    requestText: params.requestText,
+    executionPrompt: params.executionPrompt,
+    requestedBy: params.requestedBy,
+    requestedByAccount: params.requestedByAccount,
+    deviceId: CLAW_RUNTIME_DEVICE_ID,
+    accountId: CLAW_BACKEND_ID,
+    accountLabel: "Claw Runtime",
+  });
+
+  const timer = setTimeout(() => {
+    void (async () => {
+      const currentTask = await getMasterAgentTask(task.taskId);
+      if (!currentTask || currentTask.status !== "queued") {
+        return;
+      }
+
+      const backend = createClawBackend();
+      const result = await backend.execute({
+        kind: "master_agent_reply",
+        projectId: "master-agent",
+        requestMessageId: params.requestMessageId ?? "master-agent-manual",
+        body: params.requestText,
+        executionPrompt: params.executionPrompt,
+        requestedByAccount: params.requestedByAccount,
+        requestedByLabel: params.requestedBy,
+        taskId: task.taskId,
+        modelOverride: params.agentControls?.modelOverride,
+        reasoningEffortOverride: params.agentControls?.reasoningEffortOverride,
+      });
+
+      if (result.status === "completed") {
+        await completeMasterAgentTask({
+          taskId: task.taskId,
+          deviceId: CLAW_RUNTIME_DEVICE_ID,
+          status: "completed",
+          replyBody: result.output,
+        });
+        return;
+      }
+
+      if (result.status !== "failed") {
+        await completeMasterAgentTask({
+          taskId: task.taskId,
+          deviceId: CLAW_RUNTIME_DEVICE_ID,
+          status: "failed",
+          errorMessage: "Claw Runtime 返回了当前链路尚不支持的状态。",
+        });
+        return;
+      }
+
+      if (params.apiFallbackCandidates.length > 0 || params.masterFallback) {
+        await queueAndStartOpenAiMasterAgentReply({
+          candidates: params.apiFallbackCandidates,
+          taskId: task.taskId,
+          requestText: params.requestText,
+          reasoningEffort: params.agentControls?.reasoningEffortOverride || "medium",
+          agentControls: params.agentControls,
+          masterFallback: params.masterFallback,
+        });
+        return;
+      }
+
+      await completeMasterAgentTask({
+        taskId: task.taskId,
+        deviceId: CLAW_RUNTIME_DEVICE_ID,
+        status: "failed",
+        errorMessage: normalizeClawExecutionError(result.error),
+      });
+    })();
+  }, 0);
+  timer.unref?.();
+
+  return {
+    ok: true as const,
+    accountId: CLAW_BACKEND_ID,
+    taskId: task.taskId,
+    masterReplyState: "queued" as const,
+    task: {
+      taskId: task.taskId,
+      taskType: "conversation_reply" as const,
+      status: "queued" as const,
+    },
+  };
+}
+
 export async function probeApiCompatibleAccount(params: {
   provider: ApiCompatibleProvider;
   apiKey: string;
@@ -958,6 +1065,61 @@ function buildMasterCodexNodePrompt(
   });
 }
 
+function normalizeClawExecutionError(message: string) {
+  const trimmed = message.trim();
+  if (!trimmed) {
+    return "Claw Runtime 当前执行失败。";
+  }
+  if (trimmed.length <= 240) {
+    return trimmed;
+  }
+  return `${trimmed.slice(0, 237)}...`;
+}
+
+async function replyViaClawBackend(params: {
+  requestMessageId?: string;
+  requestText: string;
+  requestedBy: string;
+  requestedByAccount: string;
+  executionPrompt: string;
+  agentControls?: ProjectAgentControls | null;
+}) {
+  const backend = createClawBackend();
+  const result = await backend.execute({
+    kind: "master_agent_reply",
+    projectId: "master-agent",
+    requestMessageId: params.requestMessageId ?? "master-agent-manual",
+    body: params.requestText,
+    executionPrompt: params.executionPrompt,
+    requestedByAccount: params.requestedByAccount,
+    requestedByLabel: params.requestedBy,
+    modelOverride: params.agentControls?.modelOverride,
+    reasoningEffortOverride: params.agentControls?.reasoningEffortOverride,
+  });
+
+  if (result.status === "completed") {
+    await appendMasterAgentSystemReply(result.output, "主 Agent · Claw Runtime");
+    return {
+      ok: true as const,
+      accountId: CLAW_BACKEND_ID,
+    };
+  }
+
+  if (result.status !== "failed") {
+    return {
+      ok: false as const,
+      reason: "CLAW_EXEC_FAILED",
+      message: "Claw Runtime 返回了当前链路尚不支持的状态。",
+    };
+  }
+
+  return {
+    ok: false as const,
+    reason: "CLAW_EXEC_FAILED",
+    message: normalizeClawExecutionError(result.error),
+  };
+}
+
 function summarizeDispatchRequest(requestText: string) {
   const compact = requestText.trim().replace(/\s+/g, " ");
   if (!compact) {
@@ -1587,6 +1749,9 @@ export async function replyToMasterAgentUserMessage(params: {
         provider: account.provider,
         status: account.status,
       })),
+    requestKind: "master_agent_reply" as const,
+    requestedBackendId: executionConfig.agentControls?.backendOverride,
+    claw: getClawBackendSelectionState(),
   };
   const selectedBackend = await selectExecutionBackend(backendSelectionInput);
   const backendChoices = listExecutionBackendChoices(backendSelectionInput);
@@ -1701,6 +1866,24 @@ export async function replyToMasterAgentUserMessage(params: {
   };
 
   if (params.mode === "enqueue") {
+    if (selectedBackend.backendId === CLAW_BACKEND_ID) {
+      return enqueueClawMasterAgentReply({
+        requestMessageId: params.requestMessageId,
+        requestText: params.requestText,
+        requestedBy: params.requestedBy,
+        requestedByAccount: params.requestedByAccount,
+        executionPrompt: masterExecutionPrompt,
+        agentControls,
+        apiFallbackCandidates: apiExecutionCandidates,
+        masterFallback: hasMasterFallback && selectedMasterAccount
+          ? {
+              account: selectedMasterAccount,
+              executionPrompt: masterExecutionPrompt,
+            }
+          : null,
+      });
+    }
+
     if (selectedBackend.backendId === "master-codex-node") {
       return runMasterNodeExecution();
     }
@@ -1729,6 +1912,27 @@ export async function replyToMasterAgentUserMessage(params: {
     }
   }
 
+  if (selectedBackend.backendId === CLAW_BACKEND_ID) {
+    const clawReply = await replyViaClawBackend({
+      requestMessageId: params.requestMessageId,
+      requestText: params.requestText,
+      requestedBy: params.requestedBy,
+      requestedByAccount: params.requestedByAccount,
+      executionPrompt: masterExecutionPrompt,
+      agentControls,
+    });
+    if (clawReply.ok) {
+      return clawReply;
+    }
+    if (apiExecutionCandidates.length === 0 && !(hasMasterFallback && selectedMasterAccount)) {
+      await appendMasterAgentSystemReply(
+        `我已经收到你的消息，但 Claw Runtime 当前执行失败：${clawReply.message}。请检查 Claw 可执行入口，或先切回其他主控后再试。`,
+        "主 Agent · Claw Runtime",
+      );
+      return clawReply;
+    }
+  }
+
   if (selectedBackend.backendId === "master-codex-node") {
     return runMasterNodeExecution();
   }
diff --git a/src/lib/execution/backend-selector.ts b/src/lib/execution/backend-selector.ts
index e9fa7f2..e127553 100644
--- a/src/lib/execution/backend-selector.ts
+++ b/src/lib/execution/backend-selector.ts
@@ -3,11 +3,17 @@ import {
   ALIYUN_QWEN_BACKEND,
   isReadyAliyunQwenBackend,
 } from "@/lib/execution/backends/aliyun-qwen-backend";
+import {
+  CLAW_BACKEND,
+  type ClawBackendSelectionState,
+  isClawRequestKindSupported,
+} from "@/lib/execution/backends/claw-backend";
 import {
   MASTER_CODEX_NODE_BACKEND,
   isReadyMasterCodexNodeBackend,
 } from "@/lib/execution/backends/master-codex-node-backend";
 import { OPENAI_BACKEND, isReadyOpenAiBackend } from "@/lib/execution/backends/openai-backend";
+import type { ExecutionRequestKind } from "@/lib/execution/types";
 
 export interface ExecutionBackendSelectionInput {
   primary: {
@@ -18,9 +24,13 @@ export interface ExecutionBackendSelectionInput {
     provider: AiProvider;
     status: AiAccountStatus;
   }>;
+  requestKind?: ExecutionRequestKind;
+  requestedBackendId?: string;
+  claw?: ClawBackendSelectionState;
 }
 
 export type ExecutionBackendChoice =
+  | typeof CLAW_BACKEND
   | typeof MASTER_CODEX_NODE_BACKEND
   | typeof OPENAI_BACKEND
   | typeof ALIYUN_QWEN_BACKEND;
@@ -39,6 +49,14 @@ function resolveBackendByProvider(provider: AiProvider): ExecutionBackendChoice
 }
 
 function isReadyBackend(choice: ExecutionBackendChoice, input: ExecutionBackendSelectionInput) {
+  if (choice.backendId === CLAW_BACKEND.backendId) {
+    const requestKind = input.requestKind;
+    if (!input.claw?.enabled || !requestKind) {
+      return false;
+    }
+    return isClawRequestKindSupported(requestKind);
+  }
+
   const candidates = [
     ...(input.primary.provider === choice.provider ? [input.primary] : []),
     ...input.backups.filter((item) => item.provider === choice.provider),
@@ -79,6 +97,13 @@ export function listExecutionBackendChoices(
     seen.add(backend.backendId);
   };
 
+  if (
+    input.requestedBackendId === CLAW_BACKEND.backendId &&
+    isReadyBackend(CLAW_BACKEND, input)
+  ) {
+    pushBackend(CLAW_BACKEND);
+  }
+
   if (input.primary.status === "ready") {
     pushBackend(primaryBackend);
   }
diff --git a/src/lib/execution/backends/claw-backend.ts b/src/lib/execution/backends/claw-backend.ts
new file mode 100644
index 0000000..7f11d92
--- /dev/null
+++ b/src/lib/execution/backends/claw-backend.ts
@@ -0,0 +1,103 @@
+import type { ExecutionBackend } from "@/lib/execution/execution-backend";
+import type {
+  ExecutionBackendDescription,
+  ExecutionImmediateResult,
+  ExecutionRequest,
+  ExecutionRequestKind,
+} from "@/lib/execution/types";
+import {
+  getClawBackendConfig,
+  isClawBackendConfigured,
+  type ClawBackendConfig,
+} from "@/lib/execution/backends/claw-config";
+import { runClawCommand } from "@/lib/execution/backends/claw-runner";
+
+export const CLAW_BACKEND_ID = "claw-runtime";
+
+export const CLAW_BACKEND = {
+  backendId: CLAW_BACKEND_ID,
+  label: "Claw Runtime",
+  mode: "local",
+} as const satisfies ExecutionBackendDescription;
+
+const SUPPORTED_CLAW_KINDS = new Set<ExecutionRequestKind>([
+  "master_agent_reply",
+  "thread_reply",
+]);
+
+type ClawRunnerInput = Parameters<typeof runClawCommand>[0];
+type ClawRunner = (input: ClawRunnerInput) => Promise<ExecutionImmediateResult>;
+
+export interface ClawBackendSelectionState {
+  enabled: boolean;
+  supportsKinds: ExecutionRequestKind[];
+}
+
+function createFailedResult(error: string): ExecutionImmediateResult {
+  return {
+    status: "failed",
+    backendId: CLAW_BACKEND_ID,
+    error,
+  };
+}
+
+export function isClawRequestKindSupported(kind: ExecutionRequestKind) {
+  return SUPPORTED_CLAW_KINDS.has(kind);
+}
+
+export function getClawBackendSelectionState(
+  config: ClawBackendConfig = getClawBackendConfig(),
+): ClawBackendSelectionState {
+  return {
+    enabled: isClawBackendConfigured(config),
+    supportsKinds: [...SUPPORTED_CLAW_KINDS],
+  };
+}
+
+function buildClawPayload(input: ExecutionRequest, config: ClawBackendConfig) {
+  return {
+    kind: input.kind,
+    projectId: input.projectId,
+    requestMessageId: input.requestMessageId,
+    body: input.body,
+    executionPrompt: input.executionPrompt ?? input.body,
+    model: input.modelOverride ?? config.defaultModel,
+    reasoningEffort: input.reasoningEffortOverride ?? "medium",
+    ...(input.targetProjectId ? { targetProjectId: input.targetProjectId } : {}),
+    ...(input.targetThreadId ? { targetThreadId: input.targetThreadId } : {}),
+    ...(input.requestedByAccount ? { requestedByAccount: input.requestedByAccount } : {}),
+    ...(input.requestedByLabel ? { requestedByLabel: input.requestedByLabel } : {}),
+    ...(input.taskId ? { taskId: input.taskId } : {}),
+  };
+}
+
+export function createClawBackend(options?: {
+  config?: ClawBackendConfig;
+  runner?: ClawRunner;
+}): ExecutionBackend {
+  const config = options?.config ?? getClawBackendConfig();
+  const runner = options?.runner ?? runClawCommand;
+
+  return {
+    backendId: CLAW_BACKEND_ID,
+    async canHandle(input) {
+      return isClawBackendConfigured(config) && isClawRequestKindSupported(input.kind);
+    },
+    async execute(input) {
+      const canHandle = await this.canHandle(input);
+      if (!canHandle) {
+        return createFailedResult("CLAW_BACKEND_NOT_AVAILABLE");
+      }
+      return runner({
+        config,
+        payload: buildClawPayload(input, config),
+      });
+    },
+    async describe() {
+      return CLAW_BACKEND;
+    },
+  };
+}
+
+export const CLAW_BACKEND_ADAPTER = createClawBackend();
+export const createClawBackendForTesting = createClawBackend;
diff --git a/src/lib/execution/backends/claw-config.ts b/src/lib/execution/backends/claw-config.ts
new file mode 100644
index 0000000..a90c7e7
--- /dev/null
+++ b/src/lib/execution/backends/claw-config.ts
@@ -0,0 +1,42 @@
+export interface ClawBackendConfig {
+  enabled: boolean;
+  command?: string;
+  args: string[];
+  cwd?: string;
+  timeoutMs: number;
+  defaultModel?: string;
+}
+
+function parseBoolean(value: string | undefined) {
+  return value?.trim().toLowerCase() === "true";
+}
+
+function parseArgs(value: string | undefined) {
+  return String(value || "")
+    .trim()
+    .split(/\s+/)
+    .filter(Boolean);
+}
+
+function parseTimeoutMs(value: string | undefined) {
+  const parsed = Number.parseInt(value || "", 10);
+  return Number.isFinite(parsed) && parsed > 0 ? parsed : 45000;
+}
+
+export function getClawBackendConfig(): ClawBackendConfig {
+  return {
+    enabled: parseBoolean(process.env.BOSS_CLAW_ENABLED),
+    command: process.env.BOSS_CLAW_COMMAND?.trim() || undefined,
+    args: parseArgs(process.env.BOSS_CLAW_ARGS),
+    cwd: process.env.BOSS_CLAW_WORKDIR?.trim() || undefined,
+    timeoutMs: parseTimeoutMs(process.env.BOSS_CLAW_TIMEOUT_MS),
+    defaultModel: process.env.BOSS_CLAW_DEFAULT_MODEL?.trim() || undefined,
+  };
+}
+
+export function isClawBackendConfigured(config: ClawBackendConfig) {
+  return config.enabled && Boolean(config.command);
+}
+
+export const getClawBackendConfigForTesting = getClawBackendConfig;
+export const isClawBackendConfiguredForTesting = isClawBackendConfigured;
diff --git a/src/lib/execution/backends/claw-runner.ts b/src/lib/execution/backends/claw-runner.ts
new file mode 100644
index 0000000..fae08d9
--- /dev/null
+++ b/src/lib/execution/backends/claw-runner.ts
@@ -0,0 +1,118 @@
+import { spawn, type ChildProcessWithoutNullStreams } from "node:child_process";
+
+import type { ClawBackendConfig } from "@/lib/execution/backends/claw-config";
+import type { ExecutionImmediateResult } from "@/lib/execution/types";
+
+const CLAW_BACKEND_ID = "claw-runtime";
+
+function createFailedResult(error: string): ExecutionImmediateResult {
+  return {
+    status: "failed",
+    backendId: CLAW_BACKEND_ID,
+    error,
+  };
+}
+
+function normalizeClawProcessResult(input: {
+  exitCode: number;
+  stdout: string;
+  stderr: string;
+}): ExecutionImmediateResult {
+  if (input.exitCode !== 0) {
+    return createFailedResult(input.stderr.trim() || `CLAW_EXIT_${input.exitCode}`);
+  }
+
+  let parsed: unknown;
+  try {
+    parsed = JSON.parse(input.stdout);
+  } catch {
+    return createFailedResult("INVALID_CLAW_RESPONSE");
+  }
+
+  if (
+    typeof parsed === "object" &&
+    parsed !== null &&
+    (parsed as { status?: unknown }).status === "completed" &&
+    typeof (parsed as { output?: unknown }).output === "string"
+  ) {
+    return {
+      status: "completed",
+      backendId: CLAW_BACKEND_ID,
+      output: (parsed as { output: string }).output,
+    };
+  }
+
+  if (
+    typeof parsed === "object" &&
+    parsed !== null &&
+    (parsed as { status?: unknown }).status === "failed" &&
+    typeof (parsed as { error?: unknown }).error === "string"
+  ) {
+    return createFailedResult((parsed as { error: string }).error);
+  }
+
+  return createFailedResult("INVALID_CLAW_RESPONSE");
+}
+
+export async function runClawCommand(input: {
+  config: ClawBackendConfig;
+  payload: unknown;
+}): Promise<ExecutionImmediateResult> {
+  const command = input.config.command;
+  if (!command) {
+    return createFailedResult("CLAW_COMMAND_NOT_CONFIGURED");
+  }
+
+  return new Promise((resolve) => {
+    const child: ChildProcessWithoutNullStreams = spawn(command, input.config.args, {
+      cwd: input.config.cwd,
+      env: process.env,
+      stdio: ["pipe", "pipe", "pipe"] as const,
+    });
+
+    let stdout = "";
+    let stderr = "";
+    let settled = false;
+
+    const finish = (result: ExecutionImmediateResult) => {
+      if (settled) {
+        return;
+      }
+      settled = true;
+      clearTimeout(timer);
+      resolve(result);
+    };
+
+    const timer = setTimeout(() => {
+      child.kill("SIGKILL");
+      finish(createFailedResult("CLAW_TIMEOUT"));
+    }, input.config.timeoutMs);
+
+    child.stdout.on("data", (chunk: Buffer | string) => {
+      stdout += String(chunk);
+    });
+
+    child.stderr.on("data", (chunk: Buffer | string) => {
+      stderr += String(chunk);
+    });
+
+    child.on("error", (error: Error) => {
+      finish(createFailedResult(error.message));
+    });
+
+    child.on("close", (code: number | null) => {
+      finish(
+        normalizeClawProcessResult({
+          exitCode: code ?? 1,
+          stdout,
+          stderr,
+        }),
+      );
+    });
+
+    child.stdin.end(JSON.stringify(input.payload ?? null));
+  });
+}
+
+export const runClawCommandForTesting = runClawCommand;
+export const createClawProcessResultForTesting = normalizeClawProcessResult;
diff --git a/src/lib/execution/types.ts b/src/lib/execution/types.ts
index 56f44e2..ba2f962 100644
--- a/src/lib/execution/types.ts
+++ b/src/lib/execution/types.ts
@@ -11,8 +11,10 @@ export interface ExecutionRequest {
   projectId: string;
   requestMessageId: string;
   body: string;
+  executionPrompt?: string;
   requestedByAccount?: string;
   requestedByLabel?: string;
+  requestedBackendId?: string;
   taskId?: string;
   targetThreadId?: string;
   targetProjectId?: string;
@@ -55,8 +57,10 @@ export function createExecutionRequest(input: ExecutionRequest): ExecutionReques
     projectId: input.projectId,
     requestMessageId: input.requestMessageId,
     body: input.body,
+    executionPrompt: input.executionPrompt ?? undefined,
     requestedByAccount: input.requestedByAccount ?? undefined,
     requestedByLabel: input.requestedByLabel ?? undefined,
+    requestedBackendId: input.requestedBackendId ?? undefined,
     taskId: input.taskId ?? undefined,
     targetThreadId: input.targetThreadId ?? undefined,
     targetProjectId: input.targetProjectId ?? undefined,
diff --git a/tests/claw-backend-config.test.ts b/tests/claw-backend-config.test.ts
new file mode 100644
index 0000000..39b7aaf
--- /dev/null
+++ b/tests/claw-backend-config.test.ts
@@ -0,0 +1,65 @@
+import assert from "node:assert/strict";
+import test from "node:test";
+import {
+  getClawBackendConfigForTesting,
+  isClawBackendConfiguredForTesting,
+} from "../src/lib/execution/backends/claw-config.ts";
+
+function snapshotEnv() {
+  return {
+    BOSS_CLAW_ENABLED: process.env.BOSS_CLAW_ENABLED,
+    BOSS_CLAW_COMMAND: process.env.BOSS_CLAW_COMMAND,
+    BOSS_CLAW_ARGS: process.env.BOSS_CLAW_ARGS,
+    BOSS_CLAW_WORKDIR: process.env.BOSS_CLAW_WORKDIR,
+    BOSS_CLAW_TIMEOUT_MS: process.env.BOSS_CLAW_TIMEOUT_MS,
+    BOSS_CLAW_DEFAULT_MODEL: process.env.BOSS_CLAW_DEFAULT_MODEL,
+  };
+}
+
+function restoreEnv(snapshot: ReturnType<typeof snapshotEnv>) {
+  process.env.BOSS_CLAW_ENABLED = snapshot.BOSS_CLAW_ENABLED;
+  process.env.BOSS_CLAW_COMMAND = snapshot.BOSS_CLAW_COMMAND;
+  process.env.BOSS_CLAW_ARGS = snapshot.BOSS_CLAW_ARGS;
+  process.env.BOSS_CLAW_WORKDIR = snapshot.BOSS_CLAW_WORKDIR;
+  process.env.BOSS_CLAW_TIMEOUT_MS = snapshot.BOSS_CLAW_TIMEOUT_MS;
+  process.env.BOSS_CLAW_DEFAULT_MODEL = snapshot.BOSS_CLAW_DEFAULT_MODEL;
+}
+
+test("Claw backend 在未配置时默认关闭", () => {
+  const previous = snapshotEnv();
+
+  delete process.env.BOSS_CLAW_ENABLED;
+  delete process.env.BOSS_CLAW_COMMAND;
+  delete process.env.BOSS_CLAW_ARGS;
+  delete process.env.BOSS_CLAW_WORKDIR;
+  delete process.env.BOSS_CLAW_TIMEOUT_MS;
+  delete process.env.BOSS_CLAW_DEFAULT_MODEL;
+
+  const config = getClawBackendConfigForTesting();
+
+  assert.equal(config.enabled, false);
+  assert.equal(isClawBackendConfiguredForTesting(config), false);
+
+  restoreEnv(previous);
+});
+
+test("Claw backend 在配置完整时返回 command、args 和 timeout", () => {
+  const previous = snapshotEnv();
+
+  process.env.BOSS_CLAW_ENABLED = "true";
+  process.env.BOSS_CLAW_COMMAND = "claw";
+  process.env.BOSS_CLAW_ARGS = "run --json";
+  process.env.BOSS_CLAW_WORKDIR = "/tmp/claw";
+  process.env.BOSS_CLAW_TIMEOUT_MS = "45000";
+
+  const config = getClawBackendConfigForTesting();
+
+  assert.equal(config.enabled, true);
+  assert.equal(config.command, "claw");
+  assert.deepEqual(config.args, ["run", "--json"]);
+  assert.equal(config.cwd, "/tmp/claw");
+  assert.equal(config.timeoutMs, 45000);
+  assert.equal(isClawBackendConfiguredForTesting(config), true);
+
+  restoreEnv(previous);
+});
diff --git a/tests/claw-backend.test.ts b/tests/claw-backend.test.ts
new file mode 100644
index 0000000..bc2e1ae
--- /dev/null
+++ b/tests/claw-backend.test.ts
@@ -0,0 +1,121 @@
+import assert from "node:assert/strict";
+import test from "node:test";
+
+import { createClawBackendForTesting } from "../src/lib/execution/backends/claw-backend.ts";
+
+test("Claw backend 只在启用且请求类型受支持时 canHandle", async () => {
+  const backend = createClawBackendForTesting({
+    config: {
+      enabled: true,
+      command: "claw",
+      args: ["run"],
+      timeoutMs: 45_000,
+    },
+    runner: async () => ({
+      status: "completed",
+      backendId: "claw-runtime",
+      output: "ok",
+    }),
+  });
+
+  assert.equal(
+    await backend.canHandle({
+      kind: "master_agent_reply",
+      projectId: "master-agent",
+      requestMessageId: "msg-1",
+      body: "继续",
+    }),
+    true,
+  );
+  assert.equal(
+    await backend.canHandle({
+      kind: "dispatch_execution",
+      projectId: "project-1",
+      requestMessageId: "msg-2",
+      body: "继续",
+    }),
+    false,
+  );
+});
+
+test("Claw backend 执行时会把 executionPrompt、模型和推理强度交给 runner", async () => {
+  const calls: unknown[] = [];
+  const backend = createClawBackendForTesting({
+    config: {
+      enabled: true,
+      command: "claw",
+      args: ["run"],
+      timeoutMs: 45_000,
+      defaultModel: "claude-sonnet",
+    },
+    runner: async (input) => {
+      calls.push(input);
+      return {
+        status: "completed",
+        backendId: "claw-runtime",
+        output: "链路正常",
+      };
+    },
+  });
+
+  const result = await backend.execute({
+    kind: "master_agent_reply",
+    projectId: "master-agent",
+    requestMessageId: "msg-1",
+    body: "继续推进",
+    executionPrompt: "系统提示词 + 用户提示词 + 当前消息",
+    modelOverride: "gpt-5.4",
+    reasoningEffortOverride: "high",
+  });
+
+  assert.equal(result.status, "completed");
+  assert.deepEqual(calls, [
+    {
+      config: {
+        enabled: true,
+        command: "claw",
+        args: ["run"],
+        timeoutMs: 45_000,
+        defaultModel: "claude-sonnet",
+      },
+      payload: {
+        kind: "master_agent_reply",
+        projectId: "master-agent",
+        requestMessageId: "msg-1",
+        body: "继续推进",
+        executionPrompt: "系统提示词 + 用户提示词 + 当前消息",
+        model: "gpt-5.4",
+        reasoningEffort: "high",
+      },
+    },
+  ]);
+});
+
+test("Claw backend describe 返回稳定描述", async () => {
+  const backend = createClawBackendForTesting({
+    config: {
+      enabled: true,
+      command: "claw",
+      args: ["run"],
+      timeoutMs: 45_000,
+    },
+    runner: async () => ({
+      status: "completed",
+      backendId: "claw-runtime",
+      output: "ok",
+    }),
+  });
+
+  const description = await backend.describe({
+    kind: "thread_reply",
+    projectId: "project-1",
+    requestMessageId: "msg-1",
+    body: "继续",
+  });
+
+  assert.deepEqual(description, {
+    backendId: "claw-runtime",
+    label: "Claw Runtime",
+    mode: "local",
+  });
+});
diff --git a/tests/claw-runner.test.ts b/tests/claw-runner.test.ts
new file mode 100644
index 0000000..5e46924
--- /dev/null
+++ b/tests/claw-runner.test.ts
@@ -0,0 +1,180 @@
+import assert from "node:assert/strict";
+import { mkdtemp, realpath, writeFile } from "node:fs/promises";
+import { tmpdir } from "node:os";
+import { join } from "node:path";
+import test from "node:test";
+
+import { runClawCommandForTesting } from "../src/lib/execution/backends/claw-runner.ts";
+
+async function createTempScript(source: string) {
+  const dir = await mkdtemp(join(tmpdir(), "claw-runner-"));
+  const scriptPath = join(dir, "claw-script.mjs");
+  await writeFile(scriptPath, source, "utf8");
+  return { dir, scriptPath };
+}
+
+test("Claw runner 把 completed JSON 响应映射成 completed，并把 payload 写入 stdin", async () => {
+  const workspace = await mkdtemp(join(tmpdir(), "claw-runner-cwd-"));
+  const expectedWorkspace = await realpath(workspace);
+  const { scriptPath } = await createTempScript(`
+    import { readFile } from "node:fs/promises";
+
+    let stdin = "";
+    process.stdin.setEncoding("utf8");
+    for await (const chunk of process.stdin) {
+      stdin += chunk;
+    }
+
+    const payload = JSON.parse(stdin);
+    process.stdout.write(JSON.stringify({
+      status: "completed",
+      output: JSON.stringify({
+        body: payload.body,
+        cwd: process.cwd(),
+        command: payload.command,
+      }),
+    }));
+  `);
+
+  const result = await runClawCommandForTesting({
+    config: {
+      enabled: true,
+      command: process.execPath,
+      args: [scriptPath],
+      cwd: workspace,
+      timeoutMs: 1000,
+    },
+    payload: {
+      body: "继续执行",
+      command: "claw",
+    },
+  });
+
+  assert.equal(result.status, "completed");
+  if (result.status !== "completed") {
+    assert.fail("expected completed");
+  }
+
+  const output = JSON.parse(result.output) as {
+    body: string;
+    cwd: string;
+    command: string;
+  };
+
+  assert.equal(output.body, "继续执行");
+  assert.equal(output.cwd, expectedWorkspace);
+  assert.equal(output.command, "claw");
+});
+
+test("Claw runner 把 failed JSON 响应映射成 failed", async () => {
+  const { scriptPath } = await createTempScript(`
+    let stdin = "";
+    process.stdin.setEncoding("utf8");
+    for await (const chunk of process.stdin) {
+      stdin += chunk;
+    }
+
+    const payload = JSON.parse(stdin);
+    process.stdout.write(JSON.stringify({
+      status: "failed",
+      error: "bad-request:" + payload.body,
+    }));
+  `);
+
+  const result = await runClawCommandForTesting({
+    config: {
+      enabled: true,
+      command: process.execPath,
+      args: [scriptPath],
+      timeoutMs: 1000,
+    },
+    payload: {
+      body: "格式不对",
+    },
+  });
+
+  assert.equal(result.status, "failed");
+  if (result.status !== "failed") {
+    assert.fail("expected failed");
+  }
+
+  assert.equal(result.error, "bad-request:格式不对");
+});
+
+test("Claw runner 把无效 JSON 响应映射成 INVALID_CLAW_RESPONSE", async () => {
+  const { scriptPath } = await createTempScript(`
+    process.stdout.write("not-json");
+  `);
+
+  const result = await runClawCommandForTesting({
+    config: {
+      enabled: true,
+      command: process.execPath,
+      args: [scriptPath],
+      timeoutMs: 1000,
+    },
+    payload: {
+      body: "anything",
+    },
+  });
+
+  assert.equal(result.status, "failed");
+  if (result.status !== "failed") {
+    assert.fail("expected failed");
+  }
+
+  assert.match(result.error, /INVALID_CLAW_RESPONSE/);
+});
+
+test("Claw runner 把非零退出码映射成 stderr 或退出码错误", async () => {
+  const { scriptPath } = await createTempScript(`
+    process.stderr.write("claw crashed");
+    process.exit(2);
+  `);
+
+  const result = await runClawCommandForTesting({
+    config: {
+      enabled: true,
+      command: process.execPath,
+      args: [scriptPath],
+      timeoutMs: 1000,
+    },
+    payload: {
+      body: "anything",
+    },
+  });
+
+  assert.equal(result.status, "failed");
+  if (result.status !== "failed") {
+    assert.fail("expected failed");
+  }
+
+  assert.match(result.error, /claw crashed/);
+});
+
+test("Claw runner 超时后返回 CLAW_TIMEOUT", async () => {
+  const { scriptPath } = await createTempScript(`
+    setTimeout(() => {
+      process.stdout.write(JSON.stringify({ status: "completed", output: "late" }));
+    }, 500);
+  `);
+
+  const result = await runClawCommandForTesting({
+    config: {
+      enabled: true,
+      command: process.execPath,
+      args: [scriptPath],
+      timeoutMs: 50,
+    },
+    payload: {
+      body: "slow",
+    },
+  });
+
+  assert.equal(result.status, "failed");
+  if (result.status !== "failed") {
+    assert.fail("expected failed");
+  }
+
+  assert.match(result.error, /CLAW_TIMEOUT/);
+});
diff --git a/tests/execution-backend-selector.test.ts b/tests/execution-backend-selector.test.ts
index e8d554b..49704af 100644
--- a/tests/execution-backend-selector.test.ts
+++ b/tests/execution-backend-selector.test.ts
@@ -1,6 +1,9 @@
 import assert from "node:assert/strict";
 import test from "node:test";
-import { selectExecutionBackendForTesting } from "@/lib/execution/backend-selector";
+import {
+  listExecutionBackendChoices,
+  selectExecutionBackendForTesting,
+} from "@/lib/execution/backend-selector";
 
 test("selectExecutionBackendForTesting prefers the ready primary master codex node", async () => {
   const backend = await selectExecutionBackendForTesting({
@@ -73,3 +76,46 @@ test("selectExecutionBackendForTesting falls back to master node last when highe
 
   assert.equal(backend.backendId, "master-codex-node");
 });
+
+test("listExecutionBackendChoices keeps claw disabled by default", () => {
+  const backends = listExecutionBackendChoices({
+    primary: { provider: "master_codex_node", status: "ready" },
+    backups: [{ provider: "openai_api", status: "ready" }],
+    requestKind: "master_agent_reply",
+  });
+
+  assert.deepEqual(
+    backends.map((backend) => backend.backendId),
+    ["master-codex-node", "openai-api"],
+  );
+});
+
+test("selectExecutionBackendForTesting honors an explicit claw request when claw is enabled", async () => {
+  const backend = await selectExecutionBackendForTesting({
+    primary: { provider: "master_codex_node", status: "ready" },
+    backups: [{ provider: "openai_api", status: "ready" }],
+    requestKind: "master_agent_reply",
+    requestedBackendId: "claw-runtime",
+    claw: {
+      enabled: true,
+      supportsKinds: ["master_agent_reply", "thread_reply"],
+    },
+  });
+
+  assert.equal(backend.backendId, "claw-runtime");
+});
+
+test("selectExecutionBackendForTesting falls back when claw is requested but unavailable", async () => {
+  const backend = await selectExecutionBackendForTesting({
+    primary: { provider: "master_codex_node", status: "ready" },
+    backups: [{ provider: "openai_api", status: "ready" }],
+    requestKind: "master_agent_reply",
+    requestedBackendId: "claw-runtime",
+    claw: {
+      enabled: false,
+      supportsKinds: ["master_agent_reply"],
+    },
+  });
+
+  assert.equal(backend.backendId, "master-codex-node");
+});
diff --git a/tests/execution-foundation-contracts.test.ts b/tests/execution-foundation-contracts.test.ts
index f030f2c..c3ac75f 100644
--- a/tests/execution-foundation-contracts.test.ts
+++ b/tests/execution-foundation-contracts.test.ts
@@ -19,10 +19,13 @@ test("ExecutionRequest 工厂会生成稳定默认字段", () => {
   assert.equal(request.projectId, "master-agent");
   assert.equal(request.requestMessageId, "msg-1");
   assert.equal(request.body, "你好");
+  assert.equal(request.executionPrompt, undefined);
   assert.equal(request.targetProjectId, undefined);
   assert.equal(request.targetThreadId, undefined);
   assert.equal(Object.prototype.hasOwnProperty.call(request, "requestedByAccount"), true);
   assert.equal(Object.prototype.hasOwnProperty.call(request, "requestedByLabel"), true);
+  assert.equal(Object.prototype.hasOwnProperty.call(request, "executionPrompt"), true);
+  assert.equal(Object.prototype.hasOwnProperty.call(request, "requestedBackendId"), true);
   assert.equal(Object.prototype.hasOwnProperty.call(request, "taskId"), true);
   assert.equal(Object.prototype.hasOwnProperty.call(request, "targetProjectId"), true);
   assert.equal(Object.prototype.hasOwnProperty.call(request, "targetThreadId"), true);
diff --git a/tests/master-agent-chat-controls.test.ts b/tests/master-agent-chat-controls.test.ts
index 9b93d46..0f3e8b5 100644
--- a/tests/master-agent-chat-controls.test.ts
+++ b/tests/master-agent-chat-controls.test.ts
@@ -53,6 +53,9 @@ async function resetMasterAgentControls() {
   const project = state.projects.find((item) => item.id === "master-agent");
   assert.ok(project, "expected seeded master-agent project");
   delete project.agentControls;
+  state.userProjectAgentControls = state.userProjectAgentControls.filter(
+    (item) => item.projectId !== "master-agent",
+  );
   await writeState(state);
 }
 
@@ -110,6 +113,7 @@ test("master-agent 对话控制路由可读写并回显到项目详情", async (
       body: JSON.stringify({
         modelOverride: "gpt-5.4",
         reasoningEffortOverride: "medium",
+        backendOverride: "claw-runtime",
       }),
     }),
     { params: Promise.resolve({ projectId: "master-agent" }) },
@@ -121,12 +125,14 @@ test("master-agent 对话控制路由可读写并回显到项目详情", async (
     controls: {
       modelOverride?: string;
       reasoningEffortOverride?: string;
+      backendOverride?: string;
       updatedAt: string;
     } | null;
   };
   assert.equal(postPayload.ok, true);
   assert.equal(postPayload.controls?.modelOverride, "gpt-5.4");
   assert.equal(postPayload.controls?.reasoningEffortOverride, "medium");
+  assert.equal(postPayload.controls?.backendOverride, "claw-runtime");
 
   const getResponse = await getAgentControlsRoute(
     new NextRequest("http://127.0.0.1:3000/api/v1/projects/master-agent/agent-controls", {
@@ -142,12 +148,14 @@ test("master-agent 对话控制路由可读写并回显到项目详情", async (
     controls: {
       modelOverride?: string;
       reasoningEffortOverride?: string;
+      backendOverride?: string;
       updatedAt: string;
     } | null;
   };
   assert.equal(getPayload.ok, true);
   assert.equal(getPayload.controls?.modelOverride, "gpt-5.4");
   assert.equal(getPayload.controls?.reasoningEffortOverride, "medium");
+  assert.equal(getPayload.controls?.backendOverride, "claw-runtime");
 
   const projectResponse = await getProjectRoute(
     new NextRequest("http://127.0.0.1:3000/api/v1/projects/master-agent", {
@@ -163,12 +171,14 @@ test("master-agent 对话控制路由可读写并回显到项目详情", async (
     agentControls: {
       modelOverride?: string;
       reasoningEffortOverride?: string;
+      backendOverride?: string;
       updatedAt: string;
     } | null;
   };
   assert.equal(projectPayload.ok, true);
   assert.equal(projectPayload.agentControls?.modelOverride, "gpt-5.4");
   assert.equal(projectPayload.agentControls?.reasoningEffortOverride, "medium");
+  assert.equal(projectPayload.agentControls?.backendOverride, "claw-runtime");
 });
 
 test("master-agent 对话控制按当前账号隔离，不会串到其他用户", async () => {
@@ -873,6 +883,36 @@ test("POST /agent-controls rejects unknown-key payload and preserves controls",
   assert.equal(afterProject?.updatedAt, beforeUpdatedAt);
 });
 
+test("master-agent 对话控制 POST 会稳定拒绝非法 backendOverride", async () => {
+  await setup();
+
+  const session = await createAuthSession({
+    account: "17600003315",
+    role: "highest_admin",
+    displayName: "Boss 超级管理员",
+    loginMethod: "password",
+  });
+
+  const response = await postAgentControlsRoute(
+    new NextRequest("http://127.0.0.1:3000/api/v1/projects/master-agent/agent-controls", {
+      method: "POST",
+      headers: {
+        "content-type": "application/json",
+        cookie: `${AUTH_SESSION_COOKIE}=${session.sessionToken}`,
+      },
+      body: JSON.stringify({
+        backendOverride: "bad-backend",
+      }),
+    }),
+    { params: Promise.resolve({ projectId: "master-agent" }) },
+  );
+
+  assert.equal(response.status, 400);
+  const payload = (await response.json()) as { ok: boolean; message?: string };
+  assert.equal(payload.ok, false);
+  assert.equal(payload.message, "INVALID_BACKEND_OVERRIDE");
+});
+
 test("master-agent controls helper 不会写入普通项目", async () => {
   await setup();
 
diff --git a/tests/master-agent-message-queue.test.ts b/tests/master-agent-message-queue.test.ts
index 59d4370..5577817 100644
--- a/tests/master-agent-message-queue.test.ts
+++ b/tests/master-agent-message-queue.test.ts
@@ -2,7 +2,7 @@ import test from "node:test";
 import assert from "node:assert/strict";
 import os from "node:os";
 import path from "node:path";
-import { mkdir, mkdtemp, rm } from "node:fs/promises";
+import { mkdir, mkdtemp, rm, writeFile } from "node:fs/promises";
 import { NextRequest } from "next/server";
 
 let runtimeRoot = "";
@@ -240,6 +240,99 @@ test("master-agent enqueue 在主节点离线时会自动切到 OpenAI 后台队
   }
 });
 
+test("master-agent enqueue 在显式选择 claw-runtime 时会通过 Claw 异步回写回复", async () => {
+  const clawDir = await mkdtemp(path.join(os.tmpdir(), "boss-claw-queue-"));
+  const clawScriptPath = path.join(clawDir, "claw-runtime.mjs");
+  await writeFile(
+    clawScriptPath,
+    `
+      let stdin = "";
+      process.stdin.setEncoding("utf8");
+      for await (const chunk of process.stdin) {
+        stdin += chunk;
+      }
+      const payload = JSON.parse(stdin);
+      process.stdout.write(JSON.stringify({
+        status: "completed",
+        output: "Claw 已接管当前主 Agent 会话：" + payload.body
+      }));
+    `,
+    "utf8",
+  );
+
+  const previousEnv = {
+    BOSS_CLAW_ENABLED: process.env.BOSS_CLAW_ENABLED,
+    BOSS_CLAW_COMMAND: process.env.BOSS_CLAW_COMMAND,
+    BOSS_CLAW_ARGS: process.env.BOSS_CLAW_ARGS,
+    BOSS_CLAW_TIMEOUT_MS: process.env.BOSS_CLAW_TIMEOUT_MS,
+  };
+  process.env.BOSS_CLAW_ENABLED = "true";
+  process.env.BOSS_CLAW_COMMAND = process.execPath;
+  process.env.BOSS_CLAW_ARGS = clawScriptPath;
+  process.env.BOSS_CLAW_TIMEOUT_MS = "1000";
+
+  await saveAiAccount({
+    accountId: "master-codex-primary-claw",
+    label: "主 GPT",
+    role: "primary",
+    provider: "master_codex_node",
+    displayName: "Mac 上的 Master Codex Node",
+    nodeId: "local-codex-node",
+    nodeLabel: "本机 Codex",
+    model: "gpt-5.4",
+    enabled: true,
+    setActive: true,
+    loginStatusNote: "用于 Claw backend 队列测试。",
+  });
+
+  await updateProjectAgentControls("master-agent", {
+    backendOverride: "claw-runtime",
+  });
+
+  try {
+    const response = await POST(
+      await createAuthedRequest("master-agent", {
+        body: "请走 Claw runtime",
+      }),
+      { params: Promise.resolve({ projectId: "master-agent" }) },
+    );
+
+    assert.equal(response.status, 200);
+    const payload = (await response.json()) as {
+      ok: boolean;
+      task?: { taskId: string; status: string } | null;
+      masterReply?: { accountId?: string } | null;
+      masterReplyState?: string | null;
+    };
+
+    assert.equal(payload.ok, true);
+    assert.equal(payload.masterReply?.accountId, "claw-runtime");
+    assert.equal(payload.masterReplyState, "queued");
+    assert.ok(payload.task?.taskId);
+
+    await waitFor(async () => {
+      const state = await readState();
+      const task = state.masterAgentTasks.find((item) => item.taskId === payload.task?.taskId);
+      return task?.status === "completed";
+    });
+
+    const nextState = await readState();
+    const task = nextState.masterAgentTasks.find((item) => item.taskId === payload.task?.taskId);
+    assert.equal(task?.status, "completed");
+    assert.equal(task?.replyBody, "Claw 已接管当前主 Agent 会话：请走 Claw runtime");
+
+    const masterProject = nextState.projects.find((project) => project.id === "master-agent");
+    const mirroredReply = masterProject?.messages.at(-1);
+    assert.match(mirroredReply?.body ?? "", /Claw 已接管当前主 Agent 会话/);
+  } finally {
+    process.env.BOSS_CLAW_ENABLED = previousEnv.BOSS_CLAW_ENABLED;
+    process.env.BOSS_CLAW_COMMAND = previousEnv.BOSS_CLAW_COMMAND;
+    process.env.BOSS_CLAW_ARGS = previousEnv.BOSS_CLAW_ARGS;
+    process.env.BOSS_CLAW_TIMEOUT_MS = previousEnv.BOSS_CLAW_TIMEOUT_MS;
+    await rm(clawDir, { recursive: true, force: true });
+  }
+});
+
 test("master-agent enqueue 在首选主节点离线时会回退到可用的备用主节点并返回实际账号", async () => {
   await saveAiAccount({
     accountId: "master-codex-primary-offline",
diff --git a/tests/master-agent-prompts-memory-routes.test.ts b/tests/master-agent-prompts-memory-routes.test.ts
index cdfa48e..6f05cbf 100644
--- a/tests/master-agent-prompts-memory-routes.test.ts
+++ b/tests/master-agent-prompts-memory-routes.test.ts
@@ -198,6 +198,7 @@ test("prompt-profile 写入当前对话提示词时按当前账号隔离", async
       headers: memberRequest.headers,
       body: JSON.stringify({
         promptOverride: "成员自己的当前对话提示词",
+        backendOverride: "claw-runtime",
       }),
     }),
     { params: Promise.resolve({ projectId: "master-agent" }) },
@@ -208,8 +209,12 @@ test("prompt-profile 写入当前对话提示词时按当前账号隔离", async
     ok: boolean;
     projectPromptOverride: string | null;
     account: string;
+    projectControls: {
+      backendOverride?: string | null;
+    } | null;
   };
   assert.equal(payload.ok, true);
   assert.equal(payload.account, "18800001111");
   assert.equal(payload.projectPromptOverride, "成员自己的当前对话提示词");
+  assert.equal(payload.projectControls?.backendOverride, "claw-runtime");
 });