diff --git a/src/agents/acp-spawn.test.ts b/src/agents/acp-spawn.test.ts
index fa94536fe4b..66bc5587669 100644
--- a/src/agents/acp-spawn.test.ts
+++ b/src/agents/acp-spawn.test.ts
@@ -1,3 +1,6 @@
+import fs from "node:fs/promises";
+import os from "node:os";
+import path from "node:path";
 import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
 import * as acpSessionManager from "../acp/control-plane/manager.js";
 import type { AcpInitializeSessionInput } from "../acp/control-plane/manager.types.js";
@@ -538,6 +541,111 @@ describe("spawnAcpDirect", () => {
     });
   });
 
+  it("uses the target agent workspace for cross-agent ACP spawns when cwd is omitted", async () => {
+    const workspaceRoot = await fs.mkdtemp(path.join(os.tmpdir(), "openclaw-acp-spawn-"));
+    try {
+      const mainWorkspace = path.join(workspaceRoot, "main");
+      const targetWorkspace = path.join(workspaceRoot, "claude-code");
+      await fs.mkdir(mainWorkspace, { recursive: true });
+      await fs.mkdir(targetWorkspace, { recursive: true });
+
+      replaceSpawnConfig({
+        ...hoisted.state.cfg,
+        acp: {
+          ...hoisted.state.cfg.acp,
+          allowedAgents: ["codex", "claude-code"],
+        },
+        agents: {
+          list: [
+            {
+              id: "main",
+              default: true,
+              workspace: mainWorkspace,
+            },
+            {
+              id: "claude-code",
+              workspace: targetWorkspace,
+            },
+          ],
+        },
+      });
+
+      const result = await spawnAcpDirect(
+        {
+          task: "Inspect the queue owner state",
+          agentId: "claude-code",
+          mode: "run",
+        },
+        {
+          agentSessionKey: "agent:main:main",
+        },
+      );
+
+      expect(result.status).toBe("accepted");
+      expect(hoisted.initializeSessionMock).toHaveBeenCalledWith(
+        expect.objectContaining({
+          sessionKey: expect.stringMatching(/^agent:claude-code:acp:/),
+          agent: "claude-code",
+          cwd: targetWorkspace,
+        }),
+      );
+    } finally {
+      await fs.rm(workspaceRoot, { recursive: true, force: true });
+    }
+  });
+
+  it("falls back to backend default cwd when the inherited target workspace does not exist", async () => {
+    const workspaceRoot = await fs.mkdtemp(path.join(os.tmpdir(), "openclaw-acp-spawn-"));
+    try {
+      const mainWorkspace = path.join(workspaceRoot, "main");
+      const missingTargetWorkspace = path.join(workspaceRoot, "claude-code-missing");
+      await fs.mkdir(mainWorkspace, { recursive: true });
+
+      replaceSpawnConfig({
+        ...hoisted.state.cfg,
+        acp: {
+          ...hoisted.state.cfg.acp,
+          allowedAgents: ["codex", "claude-code"],
+        },
+        agents: {
+          list: [
+            {
+              id: "main",
+              default: true,
+              workspace: mainWorkspace,
+            },
+            {
+              id: "claude-code",
+              workspace: missingTargetWorkspace,
+            },
+          ],
+        },
+      });
+
+      const result = await spawnAcpDirect(
+        {
+          task: "Inspect the queue owner state",
+          agentId: "claude-code",
+          mode: "run",
+        },
+        {
+          agentSessionKey: "agent:main:main",
+        },
+      );
+
+      expect(result.status).toBe("accepted");
+      expect(hoisted.initializeSessionMock).toHaveBeenCalledWith(
+        expect.objectContaining({
+          sessionKey: expect.stringMatching(/^agent:claude-code:acp:/),
+          agent: "claude-code",
+          cwd: undefined,
+        }),
+      );
+    } finally {
+      await fs.rm(workspaceRoot, { recursive: true, force: true });
+    }
+  });
+
   it("binds LINE ACP sessions to the current conversation when the channel has no native threads", async () => {
     enableLineCurrentConversationBindings();
     hoisted.sessionBindingBindMock.mockImplementationOnce(
diff --git a/src/agents/acp-spawn.ts b/src/agents/acp-spawn.ts
index 5ea8300c155..7d7bee561eb 100644
--- a/src/agents/acp-spawn.ts
+++ b/src/agents/acp-spawn.ts
@@ -1,4 +1,5 @@
 import crypto from "node:crypto";
+import fs from "node:fs/promises";
 import { getAcpSessionManager } from "../acp/control-plane/manager.js";
 import {
   cleanupFailedAcpSpawn,
@@ -58,6 +59,7 @@ import {
 } from "./acp-spawn-parent-stream.js";
 import { resolveAgentConfig, resolveDefaultAgentId } from "./agent-scope.js";
 import { resolveSandboxRuntimeStatus } from "./sandbox/runtime-status.js";
+import { resolveSpawnedWorkspaceInheritance } from "./spawned-context.js";
 import { resolveInternalSessionKey, resolveMainSessionAlias } from "./tools/sessions-helpers.js";
 
 const log = createSubsystemLogger("agents/acp-spawn");
@@ -367,6 +369,24 @@ function summarizeError(err: unknown): string {
   return "error";
 }
 
+async function resolveRuntimeCwdForAcpSpawn(params: {
+  resolvedCwd?: string;
+  explicitCwd?: string;
+}): Promise<string | undefined> {
+  if (!params.resolvedCwd) {
+    return undefined;
+  }
+  if (typeof params.explicitCwd === "string" && params.explicitCwd.trim()) {
+    return params.resolvedCwd;
+  }
+  try {
+    await fs.access(params.resolvedCwd);
+    return params.resolvedCwd;
+  } catch {
+    return undefined;
+  }
+}
+
 function resolveRequesterInternalSessionKey(params: {
   cfg: OpenClawConfig;
   requesterSessionKey?: string;
@@ -918,6 +938,16 @@ export async function spawnAcpDirect(
 
   const sessionKey = `agent:${targetAgentId}:acp:${crypto.randomUUID()}`;
   const runtimeMode = resolveAcpSessionMode(spawnMode);
+  const resolvedCwd = resolveSpawnedWorkspaceInheritance({
+    config: cfg,
+    targetAgentId,
+    requesterSessionKey: ctx.agentSessionKey,
+    explicitWorkspaceDir: params.cwd,
+  });
+  const runtimeCwd = await resolveRuntimeCwdForAcpSpawn({
+    resolvedCwd,
+    explicitCwd: params.cwd,
+  });
 
   let preparedBinding: PreparedAcpThreadBinding | null = null;
   if (requestThreadBinding) {
@@ -958,7 +988,7 @@ export async function spawnAcpDirect(
       targetAgentId,
       runtimeMode,
       resumeSessionId: params.resumeSessionId,
-      cwd: params.cwd,
+      cwd: runtimeCwd,
     });
     initializedRuntime = initializedSession.runtimeCloseHandle;