fp-check
About
The fp-check skill systematically verifies suspected security bugs to eliminate false positives, producing definitive TRUE POSITIVE or FALSE POSITIVE verdicts with documented evidence. It's designed for validating specific bug findings when developers ask "is this bug real?" or need to verify exploitability. Use this skill for targeted bug verification, not for general security scanning or feature development tasks.
Quick Install
Claude Code
Recommendednpx skills add trailofbits/skills -a claude-code/plugin add https://github.com/trailofbits/skillsgit clone https://github.com/trailofbits/skills.git ~/.claude/skills/fp-checkCopy and paste this command in Claude Code to install this skill
GitHub Repository
Frequently asked questions
What is the fp-check skill?
fp-check is a Claude Skill by trailofbits. Skills package instructions and resources that Claude loads on demand, so Claude can perform fp-check-related tasks without extra prompting.
How do I install fp-check?
Use the install commands on this page: add fp-check to Claude Code as a plugin, or clone its repository into your skills directory, then restart Claude so it picks up the skill.
What category does fp-check belong to?
fp-check is in the Documentation category, tagged word.
Is fp-check free to use?
Yes. fp-check is listed on AIMCP and free to install. It runs inside Claude, so no separate service account is required to use the skill itself.
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