Verification Loop

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

Phase 1: Build Verification

set -o pipefail  # report the build's exit status, not tail's
# Check if project builds
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

set -o pipefail
# TypeScript projects
npx --no-install tsc --noEmit 2>&1 | sed -n '1,30p'

# Python projects
pyright . 2>&1 | sed -n '1,30p'

Report all type errors. Fix critical ones before continuing.

Phase 3: Lint Check

Use sed to limit displayed output while consuming the whole stream. This keeps a successful linter from failing on SIGPIPE when pipefail is enabled.

set -o pipefail
# JavaScript/TypeScript
npm run lint 2>&1 | sed -n '1,30p'

# Python
ruff check . 2>&1 | sed -n '1,30p'