Advanced API Security: Scopes, Roles, and Permissions
Covers OAuth scopes, role-based access control (RBAC), and fine-grained permissions in REST APIs. Includes Python examples using PyJWT for embedding scopes inside JWT tokens, a Flask middleware decorator that validates required scopes before granting route access, and a permission matrix mapping admin, editor, and viewer roles to specific actions. Explains how to combine both roles and scopes in a single token payload and walks through a complete RBAC implementation in Flask with protected endpoints.