diff --git a/.openclaw-sync/source.json b/.openclaw-sync/source.json
index 6e1e0363c..463afab93 100644
--- a/.openclaw-sync/source.json
+++ b/.openclaw-sync/source.json
@@ -1,5 +1,5 @@
 {
   "repository": "openclaw/openclaw",
-  "sha": "0e4be1e3d33fe153aa9feecca024e9a2a2deb518",
-  "syncedAt": "2026-04-27T10:13:35.194Z"
+  "sha": "4067d78a4c1d43577b50e40bc46aa8059654392c",
+  "syncedAt": "2026-04-27T10:16:37.764Z"
 }
diff --git a/docs/gateway/background-process.md b/docs/gateway/background-process.md
index f5d42d784..03a0811d0 100644
--- a/docs/gateway/background-process.md
+++ b/docs/gateway/background-process.md
@@ -17,7 +17,7 @@ Key parameters:
 - `command` (required)
 - `yieldMs` (default 10000): auto‑background after this delay
 - `background` (bool): background immediately
-- `timeout` (seconds, default 1800): kill the process after this timeout
+- `timeout` (seconds, default `tools.exec.timeoutSec`): kill the process after this timeout; set `timeout: 0` only to disable the exec process timeout for that call
 - `elevated` (bool): run outside the sandbox if elevated mode is enabled/allowed (`gateway` by default, or `node` when the exec target is `node`)
 - Need a real TTY? Set `pty: true`.
 - `workdir`, `env`
@@ -26,6 +26,7 @@ Behavior:
 
 - Foreground runs return output directly.
 - When backgrounded (explicit or timeout), the tool returns `status: "running"` + `sessionId` and a short tail.
+- Background and `yieldMs` runs inherit `tools.exec.timeoutSec` unless the call provides an explicit `timeout`.
 - Output is kept in memory until the session is polled or cleared.
 - If the `process` tool is disallowed, `exec` runs synchronously and ignores `yieldMs`/`background`.
 - Spawned exec commands receive `OPENCLAW_SHELL=exec` for context-aware shell/profile rules.
diff --git a/docs/tools/exec.md b/docs/tools/exec.md
index 6f0a06504..69bf097ba 100644
--- a/docs/tools/exec.md
+++ b/docs/tools/exec.md
@@ -32,8 +32,8 @@ Auto-background the command after this delay (ms).
 Background the command immediately instead of waiting for `yieldMs`.
 </ParamField>
 
-<ParamField path="timeout" type="number" default="1800">
-Kill the command after this many seconds.
+<ParamField path="timeout" type="number" default="tools.exec.timeoutSec">
+Override the configured exec timeout for this call. Set `timeout: 0` only when the command should run without the exec process timeout.
 </ParamField>
 
 <ParamField path="pty" type="boolean" default="false">
@@ -70,6 +70,7 @@ Notes:
 - `node` requires a paired node (companion app or headless node host).
 - If multiple nodes are available, set `exec.node` or `tools.exec.node` to select one.
 - `exec host=node` is the only shell-execution path for nodes; the legacy `nodes.run` wrapper has been removed.
+- `timeout` applies to foreground, background, `yieldMs`, gateway, sandbox, and node `system.run` execution. If omitted, OpenClaw uses `tools.exec.timeoutSec`; explicit `timeout: 0` disables the exec process timeout for that call.
 - On non-Windows hosts, exec uses `SHELL` when set; if `SHELL` is `fish`, it prefers `bash` (or `sh`)
   from `PATH` to avoid fish-incompatible scripts, then falls back to `SHELL` if neither exists.
 - On Windows hosts, exec prefers PowerShell 7 (`pwsh`) discovery (Program Files, ProgramW6432, then PATH),
@@ -94,6 +95,7 @@ Notes:
 
 - `tools.exec.notifyOnExit` (default: true): when true, backgrounded exec sessions enqueue a system event and request a heartbeat on exit.
 - `tools.exec.approvalRunningNoticeMs` (default: 10000): emit a single “running” notice when an approval-gated exec runs longer than this (0 disables).
+- `tools.exec.timeoutSec` (default: 1800): default per-command exec timeout in seconds. Per-call `timeout` overrides it; per-call `timeout: 0` disables the exec process timeout.
 - `tools.exec.host` (default: `auto`; resolves to `sandbox` when sandbox runtime is active, `gateway` otherwise)
 - `tools.exec.security` (default: `deny` for sandbox, `full` for gateway + node when unset)
 - `tools.exec.ask` (default: `off`)