sast-runner

Runs Static Application Security Testing (SAST) using Semgrep. Scans source code for vulnerabilities, security anti-patterns, and OWASP Top 10 issues. Use when user asks to "run SAST", "scan for vulnerabilities", "static analysis", "code security scan", "静的解析", "脆弱性スキャン".

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Install this agent skill to your Project

npx add-skill https://github.com/majiayu000/claude-skill-registry/tree/main/skills/data/sast-runner

SKILL.md

SAST Runner

Wrapper for Semgrep to perform Static Application Security Testing.

Prerequisites

Semgrep must be installed:

bash

# pip
pip install semgrep

# macOS
brew install semgrep

# Docker
docker pull semgrep/semgrep

Usage

bash

# Scan current directory with auto config
npx sast-runner .

# Scan with specific ruleset
npx sast-runner . --config security-audit

# Scan with JSON output
npx sast-runner . --json

# Available rulesets
npx sast-runner --list-configs

# Check if semgrep is installed
npx sast-runner --check

Rulesets

Config	Description
auto	Auto-detect languages and apply relevant rules
security-audit	Comprehensive security audit
owasp-top-ten	OWASP Top 10 focused
cwe-top-25	CWE/SANS Top 25
default	Default ruleset

Output Format

json

{
  "tool": "semgrep",
  "scanPath": ".",
  "findings": [
    {
      "id": "javascript.express.security.audit.xss.mustache-escape",
      "severity": "high",
      "message": "Potential XSS vulnerability",
      "file": "src/app.js",
      "line": 42,
      "code": "res.send(userInput)",
      "cwes": ["CWE-79"],
      "owasp": ["A03:2021"],
      "fix": "Use proper output encoding"
    }
  ],
  "summary": {
    "total": 1,
    "critical": 0,
    "high": 1,
    "medium": 0,
    "low": 0
  }
}

Exit Codes

0: No issues found
1: Issues detected
2: Tool not installed or error

CWE Coverage

Common vulnerabilities detected:

CWE-89: SQL Injection
CWE-79: Cross-site Scripting (XSS)
CWE-78: OS Command Injection
CWE-94: Code Injection
CWE-22: Path Traversal
CWE-502: Deserialization of Untrusted Data
CWE-200: Exposure of Sensitive Information

Supported Languages

JavaScript, TypeScript, Python, Go, Java, Ruby, PHP, C, C++, Rust, Kotlin, Swift, and more.