Individual skill
building-api-authentication
Build secure API authentication systems with OAuth2, JWT, API keys, and session management. Use when implementing secure authentication flows. Trigger with phrases like "build authentication", "add API auth", or "secure the API".
skills/.curated/building-api-authentication/SKILL.md
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- ai Repository topic
- automation Repository topic
- claude-code Repository topic
- devops Repository topic
- mcp Repository topic
- ai-agents Repository topic
- anthropic Repository topic
- claude-code-plugins Repository topic
- developer-tools Repository topic
- llm Repository topic
- api Declared skill tag
- authentication Declared skill tag
- api-authentication Declared skill tag
- security Derived category
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SKILL.mdcore · 5,892 bytesreferences/errors.mddoc · 1,059 bytesreferences/examples.mddoc · 6,644 bytesreferences/implementation.mddoc · 1,565 bytes
Read excerpt
# Building API Authentication
## Overview
Build secure API authentication systems supporting JWT Bearer tokens, OAuth 2.0 authorization code and client credentials flows, API key management, and session-based authentication. Implement token issuance, validation, refresh rotation, revocation, and role-based access control (RBAC) with scoped permissions across all API endpoints.
## Prerequisites
- Cryptographic library: `jsonwebtoken` (Node.js), `PyJWT` (Python), or `jjwt` (Java)
- Secure secret storage: environment variables, AWS Secrets Manager, or HashiCorp Vault for JWT signing keys
- Database table for user credentials, refresh tokens, and API key storage
- Bcrypt or Argon2 for password hashing (never store plaintext passwords)
- OAuth 2.0 provider credentials for third-party auth integration (Google, GitHub, Auth0)
## Instructions