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Vibe Coding Harness (Output QA Agent)

A governance gate skill that reads harness.json and audits AI-generated project docs (PRD, spec, progress ledger) rule by rule, then emits a fix list.

Dev & CodingIntermediate★ 109⑂ 1AI score 8/10Last updated: Jun 30, 2026

What it does

  • Loads harness.json (single source of truth) plus CLAUDE.md, then validates every artifact under docs/ item by item.
  • Check chain: file exists and is non-empty → required sections → field rules via regex (e.g. version must match v0.1) → content rules (word count, keywords, checklist format) → forbidden patterns (TODO, {placeholder}, secret-looking sk- strings) → cross-skill consistency (product name in PRD vs. spec) → final quality gates.
  • It also audits the process, not just artifacts: the progress ledger in docs/ and .dsu/progress/ cards, catching skipped phases and "fake done" (ledger says complete but the exit gate never passed).
  • Reports are grouped as 🔴 errors / 🟡 warnings / 🔵 tips in tables, each row with a copy-paste fix instruction. Max 3 re-check rounds, then flagged for human intervention.

Who it's for

  • Teams already using the vibe-coding-kit skill suite (PRD, requirements, architecture, production, survival).
  • Anyone who refuses to trust an AI's "done" without a mechanical verification pass.
  • Teams enforcing consistent document templates and naming across a project.

Examples

  1. Right after the PRD skill finishes: "run QA on the output" → flags missing required sections and a "Version: TBD" format violation in docs/prd.md.
  2. "Full audit" → scans all of docs/ and detects that the project name in the PRD differs from the one in the project spec (rule CSR-003).
  3. Mid-development: ledger claims phase S2 while S1's exit gate never passed → reported as a 🔴 process violation.

· · · Install guide · · ·

Try it now, no install

Paste this into Claude to use the skill without installing anything.

Read the instructions in this file and follow them to help me:
https://raw.githubusercontent.com/Junliu1066/vibe-coding-kit/HEAD/skills/vibe-coding-harness/SKILL.md

What I want: (describe your task here)

If Claude can't open the link, open it yourself and paste the contents instead.

↓ If it works for you, download the ZIP below and install it. Then it runs on its own — no pasting each time.

Install in the Claude app (no terminal)
  1. Download the ZIP with the button below.
  2. In Claude, open Settings → Capabilities and turn on 'Code execution and file creation'. (one time)
  3. Go to Customize → Skills → + → 'Upload a skill' and upload the ZIP.
↓ Download ZIP
Install in Claude Code

Let Claude do it — paste this into Claude Code

Install the skill I found on Claude Skill Mart.
Copy the skills/vibe-coding-harness folder from the GitHub repo Junliu1066/vibe-coding-kit into my ~/.claude/skills/vibe-coding-harness/.
When it's done, tell me in one line what this skill can do.

Install with a command instead

git clone https://github.com/Junliu1066/vibe-coding-kit.git && mkdir -p ~/.claude/skills && cp -r vibe-coding-kit/skills/vibe-coding-harness ~/.claude/skills/

⚠ This is a third-party skill. Check the source repository before installing.

  1. Open a terminal.
  2. Clone the repo: git clone https://github.com/Junliu1066/vibe-coding-kit.git
  3. Create the skills folder: mkdir -p ~/.claude/skills
  4. Copy the skill: cp -r vibe-coding-kit/skills/vibe-coding-harness ~/.claude/skills/
  5. This skill depends on a rules file — copy harness.json (and CLAUDE.md if present) from the repo into the root of the project you want to audit.
  6. Restart Claude Code, then ask "run a QA check on my outputs" or "validate the files under docs/".
  7. Note: the SKILL.md is written in Chinese, and without harness.json or sibling skill outputs most checks will report "not enabled".
View source on GitHub ↗License: MIT