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securitytesting-security

reviewing-authentication-and-authorization-security

Use when reviewing authentication or authorization code. Provides comprehensive security guidance on JWT validation, token exchange, OAuth 2.0/2.1 compliance, PKCE, Resource Indicators, MCP authorization, session management, and API authentication. Covers critical vulnerabilities including token forwarding, audience validation, algorithm confusion, confused deputy attacks, and authentication bypass. Invoke when analyzing any authentication, authorization, or access control code changes.

bbrowning
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bbrowning
Updated 11/10/2025
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quick start

Installation and usage

Use when reviewing authentication or authorization code. Provides comprehensive security guidance on JWT validation, token exchange, OAuth 2.0/2.1 compliance, PKCE, Resource Indicators, MCP authorization, session management, and API authentication. Covers critical vulnerabilities including token forwarding, audience validation, algorithm confusion, confused deputy attacks, and authentication bypass. Invoke when analyzing any authentication, authorization, or access control code changes.

Installation
$ install --globalskills.sh
Usage

Once installed, you can use this skill by running the following command in your terminal:

skills use reviewing-authentication-and-authorization-security