API Fuzzing for Bug Bounty

Automate API fuzzing across REST, GraphQL, and SOAP endpoints.

Updated Jan 12, 2026

Search Tags:#api #GraphQL #REST #penetration testing #fuzzing #bug bounty

Ready to run

npx skills add https://github.com/jcastillotx/vibe-skeleton-app --skill api-fuzzing-for-bug-bounty-jcastillotx

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: API Fuzzing for Bug Bounty
Source: https://github.com/jcastillotx/vibe-skeleton-app/tree/main/setup/skills/api-fuzzing-bug-bounty
Command: npx skills add https://github.com/jcastillotx/vibe-skeleton-app --skill api-fuzzing-for-bug-bounty-jcastillotx

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Automates API fuzzing and vulnerability discovery across REST, GraphQL, and SOAP APIs for bug bounty and security testing workflows, reducing manual testing time and increasing coverage.

Core Features & Use Cases

Fuzzes REST, GraphQL, and SOAP endpoints to identify security weaknesses such as authentication bypass, IDOR, and injection vulnerabilities.
Generates actionable findings and guidance suitable for bug bounty reports and security assessments.
Supports both authenticated and unauthenticated testing with configurable wordlists and proxy tooling.

Quick Start

Initiate a bug bounty API assessment by targeting your API endpoints, enabling Burp Suite or an equivalent proxy, and loading relevant API wordlists to start fuzzing.

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 automate API fuzzing for bug bounty engagements?▼

Automating API fuzzing for bug bounty engagements involves targeting endpoints across REST, GraphQL, and SOAP APIs to automatically uncover vulnerabilities like authentication bypass and IDOR. It reduces manual testing time and increases endpoint coverage.

What is API fuzzing and how does it find security weaknesses?▼

API fuzzing is the process of sending malformed or unexpected inputs to REST, GraphQL, and SOAP endpoints to identify security weaknesses such as injection vulnerabilities and authentication bypass. It automates vulnerability discovery for security assessments.

Do I need Burp Suite and Python scripting to test APIs for vulnerabilities?▼

Yes, testing APIs for vulnerabilities requires Burp Suite or an equivalent proxy, Python scripting knowledge, API wordlists, and access to target endpoints. These tools enable comprehensive authenticated and unauthenticated endpoint fuzzing.

Can I fuzz authenticated and unauthenticated GraphQL and REST endpoints?▼

Yes, you can fuzz both authenticated and unauthenticated GraphQL and REST endpoints. Configurable wordlists and proxy tooling support testing across multiple API versions to identify security weaknesses during bug bounty workflows.

What is the best way to generate actionable findings for bug bounty reports?▼

The best way to generate actionable findings for bug bounty reports is to automate API fuzzing across target endpoints. This process discovers vulnerabilities and produces guidance suitable for security assessments and vulnerability research.