False Positive Check

by trailofbits

False Positive Check is a Quality skill for Claude Code, published by trailofbits in skills.

6.6K stars567 forkson trailofbits/skillsAdded 2026/08/15Repository updated 2026/08/14

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agent-skills

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Install False Positive Check

Copy False Positive Check into your Claude Code skills folder. Run the command in your terminal, or review the source on GitHub before installing.

terminal

npx degit https://github.com/trailofbits/skills/tree/main/plugins/fp-check/skills/fp-check ~/.claude/skills/fp-check

Requires Node.js. Downloads this skill only — not the rest of the repository — into your Claude Code skills folder.

Without Node.js

git clone https://github.com/trailofbits/skills.git

Clones the whole repository, then copy the skill’s own directory into your skills folder yourself.

In this catalog

Source file: plugins/fp-check/skills/fp-check/SKILL.md in trailofbits/skills
Installs to: ~/.claude/skills/fp-check
Collection: One of 25 skills cataloged from this repository
Category: Quality — 1354 skills

What False Positive Check does

False Positive Check systematically verifies suspected security bugs to determine if they are true positives or false positives, producing documented evidence for each verdict. Use it when asked to confirm whether a specific finding is real or exploitable.

False Positive Check is cataloged under Quality on DirSkills. False Positive Check comes from a repository tagged agent-skills.

Documentation

README

Excerpt

False Positive Check

When to Use

"Is this bug real?" or "is this a true positive?"
"Is this a false positive?" or "verify this finding"
"Check if this vulnerability is exploitable"
Any request to verify or validate a specific suspected bug

When NOT to Use

Finding or hunting for bugs ("find bugs", "security analysis", "audit code")
General code review for style, performance, or maintainability
Feature development, refactoring, or non-security tasks
When the user explicitly asks for a quick scan without verification

Rationalizations to Reject

If you catch yourself thinking any of these, STOP.

This is the opening of the README. Read the full README on GitHub.

Frequently asked about False Positive Check

What else does trailofbits publish alongside False Positive Check?
False Positive Check is one of 25 skills that DirSkills catalogs from trailofbits/skills, the repository it ships in. Its siblings there include Agentic Actions Auditor, Algorand Vulnerability Scanner and Audit Context Building. Each one is a separate skill with its own page in this directory, installs the same way False Positive Check does, and is maintained by trailofbits in that same repository. The rest of the collection is listed on the trailofbits/skills page.
How does False Positive Check compare to other Quality skills?
False Positive Check ranks #256 by stars among the 1354 Quality skills in this catalog. The most-starred ones next to it are Benchmark, Benchmark Optimization Loop and API Design Patterns. DirSkills ranks by the star count of the repository each skill ships in, so that order reflects how popular those repositories are rather than any review of False Positive Check against them. Open each page to compare what they document and how they install.