API Authentication
Implements secure API authentication protocols including JWT, OAuth 2.0, and API key management with hardened security headers.
API Authentication equips Claude Code with production-ready patterns for securing APIs across backend frameworks like Node.js and Python Flask. It provides boilerplate implementations and validation logic for JSON Web Tokens (access and refresh flows), OAuth 2.0 third-party integrations, and hashed API keys for service-to-service communication. Designed to prevent common security vulnerabilities, this skill guides developers through proper token lifecycle management, HTTP-only cookie configuration, essential HTTP security headers, rate limiting, and password hashing with bcrypt.
Key Features
01Hardened authentication practices such as bcrypt password hashing and HttpOnly cookie storage
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03Security header configuration including HSTS, X-Frame-Options, and X-Content-Type-Options
04Production-ready JWT generation and middleware validation for access and refresh token architectures
05Third-party OAuth 2.0 integration patterns and secure API key authentication
06Role-based access control (RBAC) patterns and endpoint error-handling mechanisms
Use Cases
01Setting up stateless user authentication for modern single-page applications and REST APIs
02Hardening existing backend endpoints with rate limiting, secure headers, and proper token revocation
03Integrating third-party login providers like Google using OAuth 2.0 workflows