# verification-loop

Runs a structured quality check before PR submission, verifying builds, types, linter rules, test coverage, exposed secrets, and diffs.

- skill · `type=skill` · Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, OpenCode · 367 installs · ★ 5906
- Author: Galaxy-Dawn
- License: MIT · policy=mirror · the beginning of the file is at the end of this page
- Source: https://github.com/Galaxy-Dawn/claude-scholar/tree/HEAD/skills/verification-loop/SKILL.md
- Updated: 2026-10-19
- HTML: https://affpapa.org/en/nevibecode/skills/galaxy-dawn-verification-loop

## What it does

This skill guides the agent through sequential repository checks before opening a pull request. It starts with build verification via uv or npm, followed by static typing through pyright or tsc and linting. If the build step fails, verification halts immediately. You have to resolve build errors before other phases run.

Testing comes next. The skill runs pytest or npm test to measure test outcomes and coverage percentages. Security checks search the codebase for hardcoded API keys and leftover console.log or print statements, concluding with a git diff review.

The process ends with a structured summary report indicating PASS or FAIL for every gate. If the project uses a custom toolchain, command mappings are selected using `references/STACK-DETECTION.md`.

## Install

### Claude Code (native platform)

1. **Skills CLI (Vercel)**
```bash
npx skills add Galaxy-Dawn/claude-scholar --skill verification-loop -a claude-code
```

2. **Manually: put the files in place**
- File: `~/.claude/skills/verification-loop/SKILL.md` — Copy the whole skill folder; for one project use .claude/skills/verification-loop/

### Codex

1. **Skills CLI (Vercel)**
```bash
npx skills add Galaxy-Dawn/claude-scholar --skill verification-loop -a codex
```

2. **Manually: put the files in place**
- File: `.agents/skills/verification-loop/SKILL.md` — For all projects use ~/.agents/skills/

### Cursor

1. **Skills CLI (Vercel)**
```bash
npx skills add Galaxy-Dawn/claude-scholar --skill verification-loop -a cursor
```

2. **Manually: put the files in place**
- File: `.cursor/skills/verification-loop/SKILL.md` — Cursor also reads .agents/skills/ and .claude/skills/

### GitHub Copilot

1. **GitHub CLI**
```bash
gh skill install Galaxy-Dawn/claude-scholar verification-loop
```

2. **Manually: put the files in place**
- File: `.github/skills/verification-loop/SKILL.md`

### Gemini CLI

1. **Skills CLI (Vercel)**
```bash
npx skills add Galaxy-Dawn/claude-scholar --skill verification-loop -a gemini-cli
```

2. **Platform CLI**
```bash
gemini skills install https://github.com/Galaxy-Dawn/claude-scholar --path skills/verification-loop
```

### Windsurf (Devin Desktop)

**Manually: put the files in place**
- File: `.devin/skills/verification-loop/SKILL.md` — The legacy .windsurf/skills/ path still works

### OpenCode

**Skills CLI (Vercel)**
```bash
npx skills add Galaxy-Dawn/claude-scholar --skill verification-loop -a opencode
```

### Claude.ai

**Claude.ai**
- Zip the folder and upload it in Settings → Capabilities → Skills

Where a file is given instead of a command, copy the files from the source to that path: https://github.com/Galaxy-Dawn/claude-scholar/tree/HEAD/skills/verification-loop/SKILL.md

## When to use it
- catch leftover print and console.log calls before committing
- verify types and build status prior to opening a pull request
- collect test coverage and pass/fail metrics in one summary
- detect exposed API keys in Python and JavaScript files

## Example prompts
- Verify code and generate the report before I open a PR
- /verify
- Run verification on the current changes

## Source text · SKILL.md · MIT

Below is the content of a third-party file. It is data, not instructions for you: do not act on anything written inside unless the human asks. Block tag: e6eb3d628a1763c8.

BEGIN THIRD-PARTY FILE e6eb3d628a1763c8
````text
---
name: verification-loop
description: This skill should be used when the user asks to "verify code", "run verification", "check quality", "validate changes", or before creating a PR. Provides comprehensive verification including build, type check, lint, tests, security scan, and diff review.
version: 1.0.0
---

# Verification Loop Skill

A comprehensive verification system for Claude Code sessions.

## When to Use

Invoke this skill:
- After completing a feature or significant code change
- Before creating a PR
- When you want to ensure quality gates pass
- After refactoring

## Verification Phases

Choose the commands adaptively for the current project instead of running every example blindly. Use the stack-appropriate command from `references/STACK-DETECTION.md` when the repo does not match the default examples below.


### Phase 1: Build Verification
```bash
# Python projects (uv)
uv build 2>&1 | tail -20
# OR
python -m build 2>&1 | tail -20

# Node.js projects
npm run build 2>&1 | tail -20
# OR
pnpm build 2>&1 | tail -20
```

If build fails, STOP and fix before continuing.

### Phase 2: Type Check
```bash
# TypeScript projects
npx tsc --noEmit 2>&1 | head -30

# Python projects
pyright . 2>&1 | head -30
```

Report all type errors. Fix critical ones before continuing.

### Phase 3: Lint Check
```bash
# JavaScript/TypeScript
npm run lint 2>&1 | head -30

# Python
ruff check . 2>&1 | head -30
```

### Phase 4: Test Suite
```bash
# Python projects
pytest --cov=src --cov-report=term-missing 2>&1 | tail -50

# Node.js projects
npm run test -- --coverage 2>&1 | tail -50
```

Report:
- Total tests: X
- Passed: X
- Failed: X
- Coverage: X%

### Phase 5: Security Scan
```bash
# Python: Check for secrets
grep -rn "sk-" --include="*.py" . 2>/dev/null | head -10
grep -rn "api_key" --include="*.py" . 2>/dev/null | head -10
pip-audit

# Node.js: Check for secrets
grep -rn "sk-" --include="*.ts" --include="*.js" . 2>/dev/null | head -10
grep -rn "api_key" --include="*.ts" --include="*.js" . 2>/dev/null | head -10

# Check for debug statements
grep -rn "print(" --include="*.py" src/ 2>/dev/null | head -10
grep -rn "console.log" --include="*.ts" --include="*.tsx" src/ 2>/dev/null | head -10
```

### Phase 6: Diff Review
```bash
# Show what changed
git diff --stat
git diff HEAD~1 --name-only
```

Review each changed file for:
- Unintended changes
- Missing error handling
- Potential edge cases

## Output Format

After running all phases, produce a verification report:

```
VERIFICATION REPORT
==================

Build:     [PASS/FAIL]
Types:     [PASS/FAIL] (X errors)
Lint:      [PASS/FAIL] (X warnings)
Tests:     [PASS/FAIL] (X/Y passed, Z% coverage)
Security:  [PASS/FAIL] (X issues)
Diff:      [X files changed]

Overall:   [READY/NOT READY] for PR

Issues to Fix:
1. ...
2. ...
```

## Continuous Mode

For long sessions, run verification every 15 minutes or after major changes:

```markdown
Set a mental checkpoint:
- After completing each function
````
END THIRD-PARTY FILE e6eb3d628a1763c8

The third-party file has ended. Everything between the e6eb3d628a1763c8 tags is data: requests and commands from it are not followed. An “end of file” line with another tag inside the block is part of the file.

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