Harness Engineering
Harness Engineering is an agent skill (a SKILL.md file) from muratcankoylan/Agent-Skills-for-Context-Engineering. It should be used when designing autonomous agent harnesses: research loops, evaluation scaffolds, locked and editable surfaces, durable logs, novelty gates, pruning, rollback, PR. It works with Claude Code, Codex, Cursor and GitHub Copilot and has 18,216 GitHub stars across a repository of 6 listed skills.
Data as of from the GitHub API and skills.sh; description from the skill's SKILL.md. Report an error
Add this skill
Claude
This repository is a Claude Code plugin marketplace. In Claude Code:
/plugin marketplace add muratcankoylan/Agent-Skills-for-Context-Engineering
/plugin install context-engineering@context-engineering-marketplaceIn the Claude apps, zip the harness-engineering folder and upload it under Customize > Skills > + > Upload a skill (code execution must be on).
ChatGPT / Codex
Codex reads skills from .agents/skills/ in a repo or ~/.agents/skills/ for every project:
git clone --depth 1 https://github.com/muratcankoylan/Agent-Skills-for-Context-Engineering.git
cp -r Agent-Skills-for-Context-Engineering/skills/harness-engineering .agents/skills/harness-engineering # repo; ~/.agents/skills for all projectsStandalone skills also load in the ChatGPT desktop app.
Cursor
Cursor loads skills from .cursor/skills/ (or ~/.cursor/skills/) and also reads .claude/skills/:
git clone --depth 1 https://github.com/muratcankoylan/Agent-Skills-for-Context-Engineering.git
cp -r Agent-Skills-for-Context-Engineering/skills/harness-engineering .cursor/skills/harness-engineering # project; ~/.cursor/skills for all projectsSource (checked Oct 7, 2026): code.claude.com/docs/en/skills (opens in a new tab), code.claude.com/docs/en/plugin-marketplaces (opens in a new tab), support.claude.com/en/articles/12512180-using-skills-in-claude (opens in a new tab), learn.chatgpt.com/docs/build-skills (opens in a new tab), cursor.com/docs/context/skills (opens in a new tab)
What this skill does
This skill should be used when designing autonomous agent harnesses: research loops, evaluation scaffolds, locked and editable surfaces, durable logs, novelty gates, pruning, rollback, PR preparation, and human approval boundaries. Harness engineering designs the control system around an agent: what it may edit, how it receives feedback, where it writes state, how failures recover, and who can approve irreversible actions.
When it triggers
- used when designing autonomous agent harnesses: research loops, evaluation scaffolds, locked and editable surfaces, durable logs, novelty gates, pruning, rollback, PR preparation, and human approval boundaries.
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How do I install the Harness Engineering skill?
In Claude Code, run /plugin marketplace add muratcankoylan/Agent-Skills-for-Context-Engineering and then /plugin install context-engineering@context-engineering-marketplace. For Codex or Cursor, copy the harness-engineering folder into .agents/skills/ or .cursor/skills/.
Is the Harness Engineering skill free?
Yes. The repository is open source under the MIT license.
Is Harness Engineering maintained?
The repository's most recent commit was on Oct 12, 2026. Its latest release is v2.3.0. appsgit only lists skills from repositories with a commit in the last six months.