diff --git a/.openclaw-sync/source.json b/.openclaw-sync/source.json
index 00f59b690..9ccbf9061 100644
--- a/.openclaw-sync/source.json
+++ b/.openclaw-sync/source.json
@@ -1,5 +1,5 @@
 {
   "repository": "openclaw/openclaw",
-  "sha": "819ff0463a58b7794cf8694bc89b5a1fcef6e3c9",
-  "syncedAt": "2026-04-22T22:18:57.604Z"
+  "sha": "f7e668d0ec6fbc5401520f414fb3576a54e6cfb8",
+  "syncedAt": "2026-04-22T22:20:22.006Z"
 }
diff --git a/docs/cli/acp.md b/docs/cli/acp.md
index 8b754417d..107621452 100644
--- a/docs/cli/acp.md
+++ b/docs/cli/acp.md
@@ -166,9 +166,11 @@ Per-session `mcpServers` are not supported in bridge mode. If an ACP client
 sends them during `newSession` or `loadSession`, the bridge returns a clear
 error instead of silently ignoring them.
 
-If you want ACPX-backed sessions to see OpenClaw plugin tools, enable the
-gateway-side ACPX plugin bridge instead of trying to pass per-session
-`mcpServers`. See [ACP Agents](/tools/acp-agents#plugin-tools-mcp-bridge).
+If you want ACPX-backed sessions to see OpenClaw plugin tools or selected
+built-in tools such as `cron`, enable the gateway-side ACPX MCP bridges instead
+of trying to pass per-session `mcpServers`. See
+[ACP Agents](/tools/acp-agents#plugin-tools-mcp-bridge) and
+[OpenClaw tools MCP bridge](/tools/acp-agents#openclaw-tools-mcp-bridge).
 
 ## Use from `acpx` (Codex, Claude, other ACP clients)
 
diff --git a/docs/tools/acp-agents.md b/docs/tools/acp-agents.md
index ae8aa3330..ed27b9291 100644
--- a/docs/tools/acp-agents.md
+++ b/docs/tools/acp-agents.md
@@ -813,6 +813,23 @@ Security and trust notes:
 Custom `mcpServers` still work as before. The built-in plugin-tools bridge is an
 additional opt-in convenience, not a replacement for generic MCP server config.
 
+### OpenClaw tools MCP bridge
+
+By default, ACPX sessions also do **not** expose built-in OpenClaw tools through
+MCP. Enable the separate core-tools bridge when an ACP agent needs selected
+built-in tools such as `cron`:
+
+```bash
+openclaw config set plugins.entries.acpx.config.openClawToolsMcpBridge true
+```
+
+What this does:
+
+- Injects a built-in MCP server named `openclaw-tools` into ACPX session
+  bootstrap.
+- Exposes selected built-in OpenClaw tools. The initial server exposes `cron`.
+- Keeps core-tool exposure explicit and default-off.
+
 ### Runtime timeout configuration
 
 The bundled `acpx` plugin defaults embedded runtime turns to a 120-second