Overview
semgrep-rule-creator is an open-source security skill for Claude Code and compatible agents, published by trailofbits. Its author describes it as: “Creates custom Semgrep rules for detecting security vulnerabilities, bug patterns, and code patterns. Use when writing Semgrep rules or building custom static analysis detections.”. The project has 6.6k stars on GitHub and is available under the CC-BY-SA-4.0 license. Add it to your setup with `/plugin marketplace add trailofbits/skills`.
What semgrep-rule-creator does
Create production-quality Semgrep rules with proper testing and validation.
What’s inside
The SKILL.md for semgrep-rule-creator is organised into these sections:
- When to Use
- When NOT to Use
- Rationalizations to Reject
- Anti-Patterns
- Strictness Level
- Overview
- Quick Start
- Quick Reference
- Workflow
- Documentation
Installation
Add semgrep-rule-creator to your agent with:
/plugin marketplace add trailofbits/skillsReview a skill’s source before installing it — skills can instruct your agent to run commands. This command comes from the skill’s public repository, which is the source of truth for setup steps. New to skills? Read how to install Claude Code skills.
Supported agents
- Claude Code — ships a claude code plugin marketplace
License
semgrep-rule-creator is published under the CC-BY-SA-4.0 license.
Strengths
- Clear CC-BY-SA-4.0 license — safe to read and adapt within its terms
- Ships in trailofbits/skills, an established project with 6,646 GitHub stars
- Works with Claude Code
- Actively maintained — repository updated in the last 90 days
Author
Topics
Alternatives to semgrep-rule-creator
Similar skills from other repositories:
Frequently asked questions
- What does semgrep-rule-creator do?
- Creates custom Semgrep rules for detecting security vulnerabilities, bug patterns, and code patterns. Use when writing Semgrep rules or building custom static analysis detections.
- How do I install semgrep-rule-creator?
- Run /plugin marketplace add trailofbits/skills in your agent, then reload your skills. Review the source at https://github.com/trailofbits/skills before installing.
- Is semgrep-rule-creator free to use?
- Yes. semgrep-rule-creator is free and open source under the CC-BY-SA-4.0 license, so you can read, run, and adapt it within that license's terms.
- Which agents does semgrep-rule-creator work with?
- semgrep-rule-creator lists Claude Code — named in its SKILL.md, its plugin marketplace or its repository topics. Skills use the portable SKILL.md format, so other agents that read that format may load it too.
- Where does semgrep-rule-creator come from?
- semgrep-rule-creator ships inside trailofbits/skills, a repository that contains 41 catalogued skills in total. The repository's 6,646 GitHub stars apply to that whole collection, not to this skill on its own.