Semgrep

Runs a Semgrep security scan over a codebase: detects languages, selects rulesets, presents the plan for explicit approval, then runs every approved ruleset through scripts/run-scans.sh, which batches the semgrep processes and writes scans.json, and merges the output to SARIF. Supports two scan modes, "run all" for...

Overview

Semgrep is a SKILL.md-based agent skill sourced from trailofbits/skills. It is categorized under security and is listed for Claude Code, Claude. The source description focuses on: Run Semgrep static analysis scan on a codebase using parallel subagents. Supports two scan modes — "run all" (full ruleset coverage) and "important only" (high-confidence security vulnerabilities). Automatically detects and uses Semgrep Pro for cross-file t... AIToolly summarizes this page as a directory entry rather than copying the full third-party skill content, so users can evaluate the source, compatibility, and practical fit before installing it.

Use Cases

Evaluate Semgrep before adding it to an AI agent workflow.
Use Semgrep as a starting point for repeatable security tasks.
Compare Semgrep with related skills from skills and other GitHub repositories.

Install Notes

# Review source first
open https://github.com/trailofbits/skills/blob/main/plugins/static-analysis/skills/semgrep/SKILL.md

Copy or clone the skill folder into your agent skills directory after reviewing its instructions and scripts.

Security Notes

Review the source SKILL.md, referenced scripts, permissions, and external services before installing Semgrep. Treat third-party skills like code dependencies, especially when they can read files, call APIs, or run commands.

Related Skills

Security And Hardening

addyosmani/agent-skills

Security

Hardens code against vulnerabilities. Use when handling user input, authentication, data storage, or external integrations. Use when building any feature that accepts untrusted data, manages user sessions, or interacts with third-party services. Use when personal data or privacy compliance (GDPR, CCPA) is involved.

typescriptjavascript
89,319 StarsMIT

Trailmark Summary

trailofbits/skills

Security

Runs a Trailmark summary analysis on a codebase. Returns auto-detected languages, entry point count, and dependency list. Use when vivisect or galvanize needs a quick structural overview. Triggers: trailmark summary, code summary, structural overview.

Claude CodeClaude
pythonsecurity
6,810 StarsSource linked

Trailmark Structural

trailofbits/skills

Security

Runs full Trailmark structural analysis by building a graph, running `preanalysis()`, and reporting hotspots, taint, blast radius, privilege boundaries, attack surface, and version-gated Trailmark 0.4+/0.5+ data such as proxy counts, subgraph edges, type/reference summaries, and entrypoint attributes. Use when vivis...

Claude CodeClaude
pythonsecurity
6,810 StarsSource linked

Skill Improver

trailofbits/skills

Security

Iteratively reviews and fixes Claude Code skill quality issues until they meet standards. Runs automated fix-review cycles using the skill-reviewer agent. Use to fix skill quality issues, improve skill descriptions, run automated skill review loops, or iteratively refine a skill. Triggers on 'fix my skill', 'improve...

Claude CodeClaude
securityreview
6,810 StarsSource linked

Mermaid To Proverif

trailofbits/skills

Security

Translates Mermaid sequenceDiagrams describing cryptographic protocols into ProVerif formal verification models (.pv files). Use when generating a ProVerif model, formally verifying a protocol, converting a Mermaid diagram to ProVerif, verifying protocol security properties (secrecy, authentication, forward secrecy)...

Claude CodeClaude
securityresearch
6,810 StarsSource linked

Cargo Fuzz

trailofbits/skills

Security

cargo-fuzz is the de facto fuzzing tool for Rust projects using Cargo. Use for fuzzing Rust code with libFuzzer backend.

Claude CodeClaude
securityresearch
6,810 StarsSource linked