auth-frontend-backend

JWT authentication between Next.js and FastAPI is implemented by integrating Better Auth to issue and validate JWT tokens on every API call, ensuring user-isolated access and protected routes across both server and client components.

Per-endpoint rate limiting in FastAPI secures APIs and improves performance by restricting request flow across client and server routes, integrated alongside JWT verification and Better Auth configuration to protect your API surface.

Better Auth works with FastAPI by issuing and validating JWT tokens on every API call, enabling user isolation with per-user data protection and endpoint-level access controls across frontend and backend communication.

JWT tokens secure every API call across Next.js and FastAPI by applying token generation and verification through server and client integration patterns, robust error handling, and middleware to maintain seamless frontend-backend communication.

Better Auth configuration is needed for a Next.js and FastAPI stack to solve secure end-to-end user authentication, wire JWT-based authentication across both frameworks, and enable per-route rate limiting to defend APIs.

Using JWT-based authentication without rate limiting in FastAPI leaves APIs undefended against request floods, preventing endpoint-level access controls and degrading performance across client and server integration patterns.