api-security

Implement OAuth2, OpenID Connect, and JWT authentication for .NET APIs.

Updated Feb 16, 2026
One-click install
npx skills add https://github.com/I-Synergy/CLAUDE.MD --skill api-security-i-synergy
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: api-security
Source: https://github.com/I-Synergy/CLAUDE.MD/tree/main/.claude/skills/api-security
Command: npx skills add https://github.com/I-Synergy/CLAUDE.MD --skill api-security-i-synergy

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill addresses the critical need to secure APIs against common vulnerabilities, ensuring data integrity, user privacy, and system resilience.

Core Features & Use Cases

  • Authentication & Authorization: Implement robust mechanisms like OAuth2, OpenID Connect, and JWT for secure access control.
  • Vulnerability Protection: Defend against OWASP API Top 10 threats including injection attacks, broken access control, and misconfigurations.
  • Use Case: Secure a new REST API endpoint by implementing JWT-based authentication and role-based authorization, ensuring only authenticated administrators can access sensitive data.

Quick Start

Secure the '/users/{id}' endpoint using policy-based authorization that requires the 'Admin' role.

Frequently Asked Questions about api-security

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

FAQPage Schema
How do I secure a REST API endpoint using JWT authentication and role-based authorization?

To secure a REST API endpoint using JWT authentication, implement policy-based authorization requiring specific roles like 'Admin' for sensitive data access. This ensures only authenticated administrators can access protected resources via robust access control mechanisms.

What are the OWASP API Top 10 vulnerabilities and how can I protect my .NET applications against them?

OWASP API Top 10 vulnerabilities include injection attacks, broken access control, and security misconfigurations. Protect your .NET applications by implementing input validation, proper secrets management, and following security best practices and detailed security checklists.

Does this API security guidance support OAuth2 and OpenID Connect for .NET applications?

Yes, this API security guidance supports implementing OAuth2 and OpenID Connect protocols in .NET applications. These robust authentication and authorization mechanisms ensure secure access control across your API endpoints.

What is the best way to manage secrets and validate input for API security?

The best way to manage secrets and validate input for API security involves implementing dedicated secrets management practices and strict input validation routines. This defends against injection attacks and prevents broken access control vulnerabilities.

Can I implement policy-based authorization to restrict access to sensitive user data?

Yes, you can implement policy-based authorization to restrict access to sensitive user data. By requiring specific roles such as 'Admin', you ensure that only authenticated administrators can access sensitive endpoints like '/users/{id}'.

Why does broken access control occur and how do I prevent it in my APIs?

Broken access control occurs when API authentication and authorization mechanisms are improperly configured or missing. Prevent it in your APIs by implementing robust JWT validation, policy-based role checks, and adhering to OWASP API security best practices.