Claude Code Harness

Q: What is a Claude Code skill and how does the Claude Code Harness skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Claude Code Harness is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the General category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: General · Sub-category: ai-tooling · Last updated: 2026-06-21

Use when setting up a structured Plan→Work→Review→Release cycle for autonomous agents, integrating Claude Code with Codex/Cursor/OpenCode, enforcing spec-first development gates, or protecting against agent self-modification. Triggers on: 'claude-code-harness', 'harness cycle', 'agent release cycle', 'spec gate', 'plan work review release', 'harness-plan', 'harness-work', 'harness-review', 'harness-release', 'codex integration', 'cursor integration', 'opencode integration', 'multi-tool agent workflow', 'autonomous agent cycle', 'agent tự động release'.

Security AStatic scan found no risk patternsHow grading works ›

From the source SKILL.md

Framework biến agents thành autonomous delivery pipeline. Plan→Work→Review→Release cycle tự chạy — human chỉ approve spec một lần.

What this skill does

Claude Code Harness is a community-contributed Claude Code skill in the ai-tooling sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/claude-code-harness/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when setting up a structured Plan→Work→Review→Release cycle for autonomous agents, integrating Claude Code with Codex/Cursor/OpenCode, enforcing spec-first development gates, or protecting against agent self-modification. Triggers on: 'claude-code-harness', 'harness cycle', 'agent release cycle', 'spec gate', 'plan work review release', 'harness-plan', 'harness-work', 'harness-review', 'harness-release', 'codex integration', 'cursor integration', 'opencode integration', 'multi-tool agent workflow', 'autonomous agent cycle', 'agent tự động release'.

Who uses this skill

The Claude Code Harness Claude Code skill is built for Claude Code users and developers across all disciplines looking for general-purpose AI assistance. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 158,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/claude-code-harness
curl -L https://claudskills.com/skills/claude-code-harness/SKILL.md \
  -o ~/.claude/skills/claude-code-harness/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/claude-code-harness/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/claude-code-harness/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\claude-code-harness\SKILL.md on Windows. See the full install guide for step-by-step instructions.

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Claude Code Harness Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/claude-code-harness/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the Claude Code Harness skill do?

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

When should I use the Claude Code Harness skill?

Use Claude Code Harness when your Claude Code task falls under the General category — specifically in the ai tooling area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Claude Code Harness" or describe the task and let Claude pick). Browse related skills at /category/general/.

What is a Claude Code skill and how does the Claude Code Harness skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Claude Code Harness is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the General category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Source: https://github.com/yanacuti1121/Yana-AI/blob/HEAD/core/skills/claude-code-harness/SKILL.md
License: Apache-2.0
Author: yanacuti1121
Website: https://yanacuti1121.github.io/Yana-AI/

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA

yanacuti1121. (2026). Claude Code Harness [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/claude-code-harness/

BibTeX

@misc{claude-code-harness-2026,
  author    = {yanacuti1121},
  title     = {Claude Code Harness [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/claude-code-harness/}
}

Embed this skill

Promote, attribute, or link this skill from your own README, blog post, or documentation. All three snippets are free to use — no sign-up, no API key. More distribution surfaces →

Badge

[![ClaudSkills](https://claudskills.com/badge/claude-code-harness.svg)](https://claudskills.com/skills/claude-code-harness/?utm_source=badge&utm_medium=readme&utm_campaign=skill_badge)

Security scan

Grade A · scanned 2026-07-23 — free static scan against the OWASP Agentic Skills Top 10.

No risk patterns were found in any of the ten OWASP-aligned categories. How grading works ›

✓ Prompt injection
✓ Data exfiltration
✓ Supply chain
✓ Reverse shell
✓ Credentials
✓ Execution
✓ Filesystem
✓ Persistence
✓ Obfuscation
✓ Network

Show this grade on your repo (click to copy):

[![Security: A](https://img.shields.io/badge/Security-A-2e7d32)](https://claudskills.com/skills/claude-code-harness/#security)

More General skills

Browse all General skills in the ClaudSkills registry, or explore these other picks from the same category:

Browse all General skills → Top 100 skills

Part of ClaudSkills — the open registry for Claude Skills & Claude Code Skills. · What's New · Install guide · About · llms.txt

Part of Acreator Store — Adam Lankamer's AI tools: PerfectStudio · Ucaption · UTagger · AutoXPoster · TestYourSkills · AutomationFlows · Au Naturel · Telegram @acreatorstore