pqcheck

Public source for the pqcheck CLI and the quantapact/pqcheck/action GitHub Action — both wrappers around the free Quantapact API.

Same scanner that powers quantapact.com, the browser extension, and Slack /pqcheck.

Repository contents

cli/      Source for the npm package `pqcheck`
action/   Source for the GitHub Action `quantapact/pqcheck/action`

CLI — npx pqcheck

npx pqcheck stripe.com

Zero install. Free, no signup. Full reference: cli/README.md or run npx pqcheck --help.

GitHub Action — quantapact/pqcheck/action

- uses: quantapact/pqcheck/action@main
  with:
    domain: mycompany.com
    threshold: '7'
    comment-on-pr: 'true'

Full input/output reference: action/README.md.

Server-side source

The TLS scanner, scoring engine, methodology code, and API endpoints live in a separate (private) repo. The public API at https://www.quantapact.com/api/scan is the contract the CLI and Action are built against — see quantapact.com/api for endpoint reference.

Methodology

Scoring is fully open: quantapact.com/methodology. Argue with the math in public.

License

MIT. © 2026 Quantapact.

Contributing / feedback

Issues and PRs welcome on this repo. Or reach us at quantapact.com/feedback.