API Fuzzing for Bug Bounty

Fuzz REST, SOAP, and GraphQL APIs to detect IDOR, injection, and authentication bypasses.

Updated Jan 12, 2026
One-click install
npx skills add https://github.com/giosuetedeschi-spec/bobu-website --skill api-fuzzing-for-bug-bounty-giosuetedeschi-spec
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: API Fuzzing for Bug Bounty
Source: https://github.com/giosuetedeschi-spec/bobu-website/tree/main/.claude/skills/api-fuzzing-bug-bounty
Command: npx skills add https://github.com/giosuetedeschi-spec/bobu-website --skill api-fuzzing-for-bug-bounty-giosuetedeschi-spec

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This skill addresses the complexity of identifying security flaws in modern API architectures, helping researchers systematically uncover vulnerabilities like IDOR, injection, and authentication bypasses.

Core Features & Use Cases

  • Comprehensive Testing: Provides structured workflows for REST, SOAP, and GraphQL protocols.
  • Vulnerability Discovery: Includes specific techniques for detecting IDOR, SQL injection, SSRF, and rate-limiting issues.
  • Use Case: Use this skill when you need to audit a target API for broken object-level authorization or when you need to reconstruct a GraphQL schema to find hidden endpoints.

Quick Start

Use the API Fuzzing for Bug Bounty skill to perform a security assessment on the target API endpoint provided in the documentation.

Frequently Asked Questions about API Fuzzing for Bug Bounty

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I find IDOR and authentication bypass vulnerabilities in APIs?

API fuzzing identifies IDOR and authentication bypass vulnerabilities through systematic endpoint enumeration and payload testing. It provides structured workflows for testing broken object-level authorization across REST, SOAP, and GraphQL protocols.

What is the best way to fuzz GraphQL APIs to discover hidden endpoints?

Fuzzing GraphQL APIs to discover hidden endpoints involves schema reconstruction and protocol analysis. This approach systematically uncovers security flaws by testing queries and mutations against the target API.

Do I need proxy tools and wordlists to perform API penetration testing?

Yes, API penetration testing requires proxy tools and wordlists to execute comprehensive endpoint enumeration and payload testing. These tools are necessary to intercept traffic and systematically inject payloads.

Can I use this approach to detect SSRF and SQL injection in REST APIs?

Yes, you can detect SSRF and SQL injection in REST APIs using specific fuzzing techniques. The methodology includes payload testing designed to uncover injection flaws and rate-limiting issues.

How does API fuzzing differ from general web application penetration testing?

API fuzzing differs by focusing specifically on REST, SOAP, and GraphQL protocols rather than general web interfaces. It targets API-specific flaws like broken object-level authorization and schema reconstruction.