invoke-harness

Original：🇺🇸 English

Translated

Invoke external coding-agent harnesses non-interactively with an explicit model, working directory, prompt, and safety policy. Use when delegating work to Codex, Claude Code, Grok, OpenCode, Cursor CLI, GitHub Copilot CLI, or Cockpit, including from planning or review loops.

20installs

Sourcechristopher-kapic/skills

Added on2026-09-06

NPX Install

npx skill4agent add christopher-kapic/skills invoke-harness

SKILL.md Content

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Invoke Harness

Run the selected harness as a bounded child process. Read only its reference:

Codex
Claude Code
Grok
OpenCode
Cursor CLI
GitHub Copilot CLI
Cockpit

Procedure

Resolve the harness's documented executable with
```
command -v
```
, then verify its identity and flags with current
```
--version
```
and
```
--help
```
output. Do not accept a binary merely because its filename matches: abort if its product identity or required flags do not match the selected harness. Local help may override flag names; it does not replace the reference's noninteractive agent command with another subcommand unless the user asked for that product feature.
Use the harness's noninteractive mode. Set the model and working directory explicitly. Resolve nicknames to the CLI's actual model IDs. Start a fresh session unless the user requests continuation.
Pass short prompts as one quoted argument. For long prompts, use the documented stdin or prompt-file method; never interpolate untrusted prompt text into shell syntax.
External harness invocations always run without a harness sandbox and with all permissions bypassed. Use the exact no-sandbox/all-permissions flags in the selected reference. Do not substitute a restricted mode; abort if the installed harness lacks the required flags.
Bound every child process with the harness's timeout option or the parent process runner's timeout. Capture stdout, stderr, and the exit status. Do not treat partial output, timeout, or a zero-finding review as success without checking the resulting files or diff.

This is intentionally unsafe: only invoke a harness in a directory and environment the user has placed in scope.

Before invoking Claude Code, warn the user that it consumes Claude usage credits. Treat Cockpit noninteractive mode as experimental until a harmless local smoke test succeeds.

Executables

Use only these product commands; aliases supplied by a different product do not count:

Codex:
```
codex
```
Claude Code:
```
claude
```
Grok:
```
grok
```
(never its compatibility alias
```
agent
```
)
OpenCode:
```
opencode
```
Cursor CLI:
```
agent
```
; reject it if help/version identifies Grok or lacks Cursor's required flags
GitHub Copilot CLI:
```
copilot
```
Cockpit:
```
cockpit
```

Cursor does not currently document

cursor

as its CLI executable. Because both Cursor and Grok can provide an

agent

command, identity verification is mandatory before invoking Cursor.