GitHub Actions Workflows Skill

Purpose

Create and maintain secure, efficient CI/CD pipelines using GitHub Actions for this TypeScript 6.0.2 / Node.js 25 MCP server project with 12 automated workflows.

When to Use

• ✅ Setting up or modifying CI/CD pipelines for TypeScript MCP projects
• ✅ Automating security scans (CodeQL, dependency review, SLSA, SBOM)
• ✅ Implementing npm package publishing with attestation
• ✅ Configuring test/coverage reporting and quality gates
• ✅ Understanding the 8-stage pipeline architecture

Current Pipeline Architecture (12 Workflows)

CI/CD Pattern (Node.js 25 + TypeScript 6.0.2)

name: Test and Report
on:
  push:
    branches: [main]
  pull_request:
    branches: [main]

permissions:
  contents: read
  checks: write

jobs:
  test:
    runs-on: ubuntu-latest
    steps:
      - uses: step-security/harden-runner@fe104658747b27e96e4f7e80cd0a94068e53901d # v2.16.1
        with:
          egress-policy: audit
      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
      - uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f # v6.3.0
        with:
          node-version: '25'
          cache: 'npm'
      - run: npm ci
      - run: npm run lint
      - run: npm run build
      - run: npm run test:coverage

Security Best Practices (Enforced)

• ✅ Pin action versions with SHA hashes — not tags (supply chain integrity)
• ✅ Prefer npm ci in CI workflows — reproducible installs from lockfile; some jobs may use npm install where needed
• ✅ Minimize GITHUB_TOKEN permissions — per-job permissions blocks
• ✅ step-security/harden-runner — egress auditing on most workflows
• ✅ Dependency review — block PRs introducing known vulnerabilities
• ✅ CodeQL weekly + on-push — continuous SAST scanning
• ✅ SLSA Level 3 provenance — verifiable build attestation
• ✅ CycloneDX + SPDX SBOM — software bill of materials on release
• ✅ OpenSSF Scorecard — continuous security posture monitoring
• ✅ Dependabot — automated dependency updates

Test Reporting

- name: Run tests with coverage
  run: npm run test:coverage
- name: Upload coverage
  uses: codecov/codecov-action@e28ff129e5465c2c0dcc6f003fc735cb6ae0c673 # v4.5.0
  with:
    files: ./coverage/lcov.info

Release Pipeline with Attestation

release:
  if: startsWith(github.ref, 'refs/tags/v')
  permissions:
    contents: write
    id-token: write
    attestations: write
  steps:
    - run: npm ci && npm run build
    - run: npm publish --provenance --access public
      env:
        NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
    - uses: actions/attest-build-provenance@a2bbfa25375fe432b6a289bc6b6cd05ecd0c4c32 # v4.1.0

Quality Gates

• Lint: Zero ESLint errors (TypeScript strict mode)
• Type check: tsc --noEmit passes
• Tests: 80%+ coverage, 1130+ unit tests, 71 E2E test cases across 4 spec files
• Security: No critical/high CodeQL alerts
• Dependencies: No known high/critical vulnerabilities
• Unused code: npx knip check passes

ISMS Policy References

Core policies:

• Secure Development Policy — CI/CD security requirements, CodeQL, SAST/DAST, SBOM, SLSA Level 3, signed releases
• Open Source Policy — Supply-chain security, dependency pinning, OSSF Scorecard, SLSA provenance
• Information Security Policy — Pipeline as critical security control

Supporting policies:

• Access Control Policy — Least-privilege GITHUB_TOKEN, fine-grained permissions: blocks
• Cryptography Policy — Signed commits / keyless Sigstore / cosign
• Change Management — Protected branches, required reviews, status checks
• Vulnerability Management — Dependabot, CodeQL scheduling
• Incident Response Plan — Workflow-failure / compromise response