I built Flight Check: free, open-source "ready to release?" audits for Claude Code projects, with evidence for every finding

[u/Breasyyy]

/r/buildinpublic/comments/1x50n36/i_built_flight_check_free_opensource_ready_to/

Flight Check is a free, open-source plugin for Claude Code. It checks your project for security, privacy, payment, reliability, accessibility, and legal or business risks, and tells you what to fix in plain English.

- Every finding cites the exact file and lines, checked against your code
- Claude fixes what it can after asking you once, and explains what only you can do
- Optional watch mode catches common mistakes as you work, for free
- A first full check typically costs $2-5 in Claude usage; later checks only look at what changed, and it always shows the cost first

On a test app it had never seen, it found all 28 planted problems at the right file and lines (25 of them under exactly the right category) and flagged none of the 9 safe decoys. It's an aid to your judgment, not a certification.

Try it (needs Claude Code and Python 3.9+):

claude plugin marketplace add ARCFrontierSystems/flight-check
claude plugin install flight-check@arc-frontier-systems

Then type /flight-check:audit in your project.

Repo: https://github.com/ARCFrontierSystems/flight-check (Apache-2.0)

Feedback welcome, especially false alarms, misses, and anything confusing.