coderClaw

Exec tool

Run shell commands in the workspace. Supports foreground + background execution via process. If process is disallowed, exec runs synchronously and ignores yieldMs/background. Background sessions are scoped per agent; process only sees sessions from the same agent.

Parameters

command (required)
workdir (defaults to cwd)
env (key/value overrides)
yieldMs (default 10000): auto-background after delay
background (bool): background immediately
timeout (seconds, default 1800): kill on expiry
pty (bool): run in a pseudo-terminal when available (TTY-only CLIs, coding agents, terminal UIs)
host (sandbox | gateway | node): where to execute
security (deny | allowlist | full): enforcement mode for gateway/node
ask (off | on-miss | always): approval prompts for gateway/node
node (string): node id/name for host=node
elevated (bool): request elevated mode (gateway host); security=full is only forced when elevated resolves to full

Notes:

host defaults to sandbox.
elevated is ignored when sandboxing is off (exec already runs on the host).
gateway/node approvals are controlled by ~/.coderclaw/exec-approvals.json.
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.
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.
Host execution (gateway/node) rejects env.PATH and loader overrides (LD_*/DYLD_*) to prevent binary hijacking or injected code.
Important: sandboxing is off by default. If sandboxing is off, host=sandbox runs directly on the gateway host (no container) and does not require approvals. To require approvals, run with host=gateway and configure exec approvals (or enable sandboxing).

Config

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.host (default: sandbox)
tools.exec.security (default: deny for sandbox, allowlist for gateway + node when unset)
tools.exec.ask (default: on-miss)
tools.exec.node (default: unset)
tools.exec.pathPrepend: list of directories to prepend to PATH for exec runs (gateway + sandbox only).
tools.exec.safeBins: stdin-only safe binaries that can run without explicit allowlist entries. For behavior details, see Safe bins.

Example:

{
  tools: {
    exec: {
      pathPrepend: ["~/bin", "/opt/oss/bin"],
    },
  },
}

PATH handling

host=gateway: merges your login-shell PATH into the exec environment. env.PATH overrides are rejected for host execution. The daemon itself still runs with a minimal PATH:
- macOS: /opt/homebrew/bin, /usr/local/bin, /usr/bin, /bin
- Linux: /usr/local/bin, /usr/bin, /bin
host=sandbox: runs sh -lc (login shell) inside the container, so /etc/profile may reset PATH. CoderClaw prepends env.PATH after profile sourcing via an internal env var (no shell interpolation); tools.exec.pathPrepend applies here too.
host=node: only non-blocked env overrides you pass are sent to the node. env.PATH overrides are rejected for host execution and ignored by node hosts. If you need additional PATH entries on a node, configure the node host service environment (systemd/launchd) or install tools in standard locations.

Per-agent node binding (use the agent list index in config):

coderclaw config get agents.list
coderclaw config set agents.list[0].tools.exec.node "node-id-or-name"

Control UI: the Nodes tab includes a small “Exec node binding” panel for the same settings.

Session overrides (`/exec`)

Use /exec to set per-session defaults for host, security, ask, and node. Send /exec with no arguments to show the current values.

Example:

/exec host=gateway security=allowlist ask=on-miss node=mac-1

Authorization model

/exec is only honored for authorized senders (channel allowlists/pairing plus commands.useAccessGroups). It updates session state only and does not write config. To hard-disable exec, deny it via tool policy (tools.deny: ["exec"] or per-agent). Host approvals still apply unless you explicitly set security=full and ask=off.

Exec approvals (companion app / node host)

Sandboxed agents can require per-request approval before exec runs on the gateway or node host. See Exec approvals for the policy, allowlist, and UI flow.

When approvals are required, the exec tool returns immediately with status: "approval-pending" and an approval id. Once approved (or denied / timed out), the Gateway emits system events (Exec finished / Exec denied). If the command is still running after tools.exec.approvalRunningNoticeMs, a single Exec running notice is emitted.

Allowlist + safe bins

Allowlist enforcement matches resolved binary paths only (no basename matches). When security=allowlist, shell commands are auto-allowed only if every pipeline segment is allowlisted or a safe bin. Chaining (;, &&, ||) and redirections are rejected in allowlist mode unless every top-level segment satisfies the allowlist (including safe bins). Redirections remain unsupported.

Examples

Foreground:

{ "tool": "exec", "command": "ls -la" }

Background + poll:

{"tool":"exec","command":"npm run build","yieldMs":1000}
{"tool":"process","action":"poll","sessionId":"<id>"}

Send keys (tmux-style):

{"tool":"process","action":"send-keys","sessionId":"<id>","keys":["Enter"]}
{"tool":"process","action":"send-keys","sessionId":"<id>","keys":["C-c"]}
{"tool":"process","action":"send-keys","sessionId":"<id>","keys":["Up","Up","Enter"]}

Submit (send CR only):

{ "tool": "process", "action": "submit", "sessionId": "<id>" }

Paste (bracketed by default):

{ "tool": "process", "action": "paste", "sessionId": "<id>", "text": "line1\nline2\n" }

apply_patch (experimental)

apply_patch is a subtool of exec for structured multi-file edits. Enable it explicitly:

{
  tools: {
    exec: {
      applyPatch: { enabled: true, workspaceOnly: true, allowModels: ["gpt-5.2"] },
    },
  },
}