What command triggers the API fuzzer?

You can invoke the skill directly by using the /fuzz-api command followed by your request or endpoint details.

What types of vulnerabilities can this skill detect?

The skill is designed to identify SQL injection, Cross-Site Scripting (XSS), command injection, and various input validation failures.

Should I run this on a production API?

It is best practice to run fuzz testing in a staging or development environment, as the malformed inputs are intended to find edge cases that could cause crashes.

Does it support custom parameters?

Yes, you can specify exactly which parameters or endpoints you want Claude to focus on for more targeted security analysis.

API Fuzzer & Security Tester

Name: API Fuzzer & Security Tester
Author: jeremylongshore

byjeremylongshore

•

884

Security & Testing

Performs automated fuzz testing on REST APIs to identify security vulnerabilities, crashes, and input validation failures.

About

This skill empowers Claude to conduct proactive security audits on REST APIs by injecting malformed data, boundary values, and random payloads into specified endpoints. It helps developers uncover critical flaws like SQL injection, XSS, and command injection before they reach production. By analyzing API responses for unexpected behaviors and crashes, it provides a comprehensive assessment of an API's robustness and security posture, making it an essential tool for secure software development lifecycles.

Key Features

884 GitHub stars
Real-time analysis of API responses for vulnerability signatures
Automated payload generation for SQLi, XSS, and command injection
Boundary value analysis for numeric, string, and date parameters
Comprehensive fuzz test suite generation via the /fuzz-api command
Customizable targeting for specific endpoints and parameters

Use Cases

Automating security assessments within a CI/CD development pipeline
Testing API robustness against malformed or extreme input values
Discovering SQL injection vulnerabilities in database-driven endpoints

About

Key Features

884 GitHub stars
Real-time analysis of API responses for vulnerability signatures
Automated payload generation for SQLi, XSS, and command injection
Boundary value analysis for numeric, string, and date parameters
Comprehensive fuzz test suite generation via the /fuzz-api command
Customizable targeting for specific endpoints and parameters

Use Cases

Automating security assessments within a CI/CD development pipeline
Testing API robustness against malformed or extreme input values
Discovering SQL injection vulnerabilities in database-driven endpoints