API Fuzzing for Bug Bounty

Fuzz REST, SOAP, and GraphQL APIs to discover and exploit vulnerabilities.

Updated Jan 4, 2026
One-click install
npx skills add https://github.com/rahmatullahboss/multi-store-saas --skill api-fuzzing-for-bug-bounty-rahmatullahboss
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: API Fuzzing for Bug Bounty
Source: https://github.com/rahmatullahboss/multi-store-saas/tree/main/.agent/skills/API%20Fuzzing%20for%20Bug%20Bounty
Command: npx skills add https://github.com/rahmatullahboss/multi-store-saas --skill api-fuzzing-for-bug-bounty-rahmatullahboss

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) and assets (resource) components.

What problem does it solve?

This Skill provides detailed methodologies and automated workflows for testing the security of REST, SOAP, and GraphQL APIs, aiding in vulnerability discovery and exploitation.

Core Features & Use Cases

  • API Reconnaissance and Enumeration: Discover API endpoints and documentation sources.
  • Vulnerability Identification: Detect IDOR, injection, SSRF, XXE, and other API-specific vulnerabilities.
  • Exploit Development: Assist in crafting payloads for common attack vectors like SQLi, command injection, and XSS.
  • Use Case: During bug bounty engagement, quickly identify and verify API vulnerabilities to report high-priority issues.

Quick Start

Use the API fuzzing skill to scan an API URL, enumerate endpoints, and test for IDOR vulnerabilities with sample payloads.

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 and exploit IDOR vulnerabilities in an API?

API fuzzing helps identify IDOR vulnerabilities by automating endpoint enumeration and injecting test payloads. This process reveals improper object referencing and other security flaws in REST, SOAP, and GraphQL implementations.

What is the best way to perform reconnaissance on REST and GraphQL APIs for bug bounty hunting?

API reconnaissance for bug bounty involves discovering undocumented endpoints and mapping the attack surface. This Skill provides workflows to enumerate REST, SOAP, and GraphQL APIs, enabling targeted vulnerability discovery.

Can I use API fuzzing to generate payloads for SQLi and command injection attacks?

Yes, API fuzzing supports exploit development by crafting payloads for SQLi, command injection, and XSS. This allows security researchers to verify vulnerabilities in API implementations during testing.

Does this API fuzzing workflow support testing SOAP APIs along with REST?

Yes, API fuzzing workflows support comprehensive security testing for REST, SOAP, and GraphQL APIs. This enables security researchers to discover and exploit vulnerabilities efficiently across different API protocols.

How do I test for SSRF and XXe vulnerabilities using API fuzzing?

API fuzzing identifies SSRF and XXE vulnerabilities by injecting test payloads into API parameters to trigger unsafe server-side processing. This Skill provides workflows to detect these specific security flaws.

What techniques are used to bypass API authentication during pentesting?

API pentesting employs bypass techniques to circumvent authentication mechanisms and access unauthorized endpoints. This Skill supports testing these methods to identify security flaws in API implementations.