Harness Engineering Playbook

Implement OpenAI Harness Engineering practices in any repository — AGENTS.md, PLANS.md, deterministic smoke/test/lint harness commands, strict architecture boundaries, observability from day 1, and entropy-control audits for reliable autonomous agent runs.

26 starsAI, LLMs & Agents

Install

skills CLI (Claude Code, Cursor, Codex and more)

npx skills add broomva/harness-engineering --skill harness-engineering-playbook

Manual install

git clone --depth 1 https://github.com/broomva/harness-engineering.git /tmp/harness-engineering
mkdir -p ~/.claude/skills
cp -r /tmp/harness-engineering/. ~/.claude/skills/harness-engineering-playbook

Personal skills live in ~/.claude/skills. Use .claude/skills in a project folder to share a skill with your team.

From the SKILL.md

# Harness Engineering Playbook

A skills.sh-compatible skill that operationalizes the practices from OpenAI's Harness Engineering guide. Use it to set up or refactor agent-first workflows so that autonomous runs are repeatable, observable, and safe.

## Install

```bash
npx skills add broomva/harness-engineering-skill --skill harness-engineering-playbook
```

## What It Does

- Bootstraps harness artifacts: `AGENTS.md`, `PLANS.md`, `docs/ARCHITECTURE.md`, `docs/OBSERVABILITY.md`, `Makefile.harness`, and CI workflows.
- Wraps deterministic commands behind `make smoke`, `make check`, `make ci` so agents can run them reliably.
- Enforces strict module boundaries and data-shape contracts.
- Wires structured observability (correlation IDs, key transitions) from day 1.
- Adds entropy-control audits and nightly harness checks to prevent docs drift and flaky scripts.

## Workflow

1. **Baseline** the target repo — detect language, toolchain, and existing CI.
2. **Bootstrap** harness artifacts from templates (interactive wizard or shell script).
3. **Apply** the nine Harness Engineering practices across repo artifacts.
4. **Validate** with `audit` — treat any `MISSING` or `FAIL` as blocking.
5. **Iterate** after real agent runs — patch gaps and re-audit.

## Quick Start

Read the full skill on GitHub

Details

Skill name: harness-engineering-playbook
Repository: broomva/harness-engineering
License: MIT
Repo updated: 28 June 2026

FAQ

What does the Harness Engineering Playbook skill do?

How do I install the Harness Engineering Playbook skill?

skills CLI (Claude Code, Cursor, Codex and more): npx skills add broomva/harness-engineering --skill harness-engineering-playbook. Skills go in ~/.claude/skills (personal) or .claude/skills (project), and Claude loads them automatically when a task matches the description.

Is Harness Engineering Playbook popular?

It lives in broomva/harness-engineering, which has 26 GitHub stars and 0 forks.

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