ptmrio/harness-subagent
14 stars · Last commit 2026-08-27
Dispatch Claude Code, Codex, or Grok as a one-shot subagent, then synthesize.
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# harness-subagent **Dispatch another coding-agent CLI as a one-shot subagent, then synthesize.** [](LICENSE) [](https://agentskills.io) [](https://code.claude.com/docs/en/headless) [](https://github.com/openai/codex) [](https://docs.x.ai) Ever wanted to call **Codex** from **Claude Code**? Ever wanted **Grok Build** to invoke **Claude Code**? Ever wanted **Claude Code** to send a diff to **GPT** for a second opinion? That's this skill. Stay in the parent you are already in — Cursor Agent, **cursor-agent**, Claude Code, Codex, Grok Build, or **Grok Bot**. It writes a brief, dispatches another coding-agent harness as a **one-shot subagent**, then the parent synthesizes. The other harness is not an oracle. A model reviewing its own work reproduces its own blind spots; a differently-trained harness does not. That worth is destroyed the moment you forward its answer without judging it. This is a [Claude skill](https://code.claude.com/docs/en/skills) in the [Agent Skills](https://agentskills.io) format. The same protocol works from any agent that can run a CLI in the background.