Does Semgrep support data flow analysis?

Yes, Semgrep includes a taint mode specifically designed to track unsanitized user input from sources to dangerous sinks like SQL queries or system calls.

Can I create my own security rules with this skill?

Yes, Semgrep allows you to define custom rules using a simple YAML syntax that mimics the semantics of your actual code.

Is it possible to use Semgrep in CI/CD pipelines?

Absolutely, this skill provides guidance on integrating Semgrep into workflows like GitHub Actions for automated, diff-aware scanning.

Does Semgrep require building the code before scanning?

No, Semgrep is a fast static analysis tool that scans source code directly without needing a successful build or compilation environment.

How does Semgrep compare to CodeQL?

Semgrep is significantly faster and easier for intraprocedural patterns, whereas CodeQL is better suited for complex interprocedural analysis across multiple files.

Semgrep Static Analysis

Name: Semgrep Static Analysis
Author: trailofbits

bytrailofbits

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938

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Security & Testing

Performs high-speed static analysis to identify security vulnerabilities and enforce coding standards across your codebase.

Semgrep is a versatile static analysis tool designed for rapid security auditing and code quality enforcement. This skill integrates Semgrep's powerful pattern-matching capabilities into Claude Code, allowing developers and security researchers to perform intraprocedural analysis, detect systemic bugs, and implement custom security rules without complex build requirements. It supports a wide range of languages and provides specific configurations from Trail of Bits, OWASP, and CWE, making it an essential tool for initial security assessments, large-scale refactoring, and CI/CD integration.

Key Features

01Pre-configured security rulesets from Trail of Bits and OWASP

02Rapid pattern-based vulnerability detection without building code

03Advanced taint analysis mode for tracking untrusted data flow

04Support for custom YAML-based rule creation and testing

05Automated code refactoring with safe autofix capabilities

06938 GitHub stars

Use Cases

01Enforcing organization-specific secure coding standards and defaults

02Conducting rapid initial security audits on new or inherited codebases

03Automating the detection and replacement of deprecated APIs

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add trailofbits/skills semgrep

For use in Claude.ai and ChatGPT

Download Skill