auth-testing

Test API authentication for OAuth 2.0, API keys, sessions, and MFA bypasses.

Updated Feb 23, 2026

Search Tags:#authentication #penetration testing #session management #mfa #api security #oauth2

Ready to run

npx skills add https://github.com/devtint/API_PENTEST --skill auth-testing

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: auth-testing
Source: https://github.com/devtint/API_PENTEST/tree/main/testing/SKILLS/auth-testing
Command: npx skills add https://github.com/devtint/API_PENTEST --skill auth-testing

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires requests, hashlib, urllib3, and includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill systematically tests API authentication mechanisms for weaknesses, protecting against unauthorized access and data breaches.

Core Features & Use Cases

Comprehensive Auth Testing: Covers OAuth 2.0, API keys, session management, and MFA.
Vulnerability Identification: Detects issues like weak credential handling, session fixation, and MFA bypasses.
Use Case: Before deploying a new API, use this Skill to ensure that all login flows, token refreshes, and multi-factor authentication steps are robust and cannot be easily bypassed.

Quick Start

Use the auth-testing skill to test the login endpoint '/api/login' for default credentials.

Frequently Asked Questions about auth-testing

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

FAQPage Schema

How do I test my API for broken authentication vulnerabilities?▼

Testing for broken authentication involves validating OAuth 2.0 flows, API keys, session management, and MFA bypasses to identify credential stuffing and session fixation. You need valid test credentials and target API network access.

Can I detect multi-factor authentication bypasses in my login flows?▼

Yes, you can detect multi-factor authentication bypasses by systematically testing login endpoints and token refreshes. This identifies insecure password reset mechanisms and validates that MFA steps cannot be easily bypassed.

How do I check OAuth 2.0 flows for session fixation issues?▼

You can check OAuth 2.0 flows by systematically testing session management mechanisms for weaknesses. This identifies session fixation vulnerabilities and ensures token refreshes remain robust against unauthorized access.

Does API security testing require valid test credentials for the target?▼

Yes, API security testing requires valid test credentials and network access to the target API. This allows comprehensive evaluation of authentication mechanisms including API key security and password reset functionality.

What is the best way to secure API authentication against the OWASP API2 category?▼

The best way to secure API authentication against OWASP API2 is to comprehensively test all login flows. This identifies weak credential handling, session fixation, and MFA bypasses before deploying a new API.