Is this skill compatible with Better Auth?

Yes, it is designed to use the BETTER_AUTH_SECRET environment variable to ensure signing consistency between a frontend using Better Auth and the Python backend.

What libraries does this skill use for authentication?

It primarily utilizes jose for JWT handling, passlib with bcrypt for password hashing, and FastAPI's dependency injection system for middleware.

Does this skill handle token expiration?

Yes, it includes patterns for setting a 7-day expiration (customizable via environment variables) and specifically catching ExpiredSignatureError to prompt user re-authentication.

How does this skill ensure user data isolation?

It implements a pattern that verifies the user_id extracted from the JWT token matches the user_id in the request URL path, returning a 403 Forbidden error if they do not match.

Backend JWT Authentication

Name: Backend JWT Authentication
Author: SOFIA-ASIF

bySOFIA-ASIF

API Development

Implements secure JWT authentication middleware and user isolation patterns for Python-based backends.

About

This skill provides a comprehensive framework for implementing JSON Web Token (JWT) authentication in FastAPI applications, specifically designed to maintain consistency with frontend libraries like Better Auth. It guides developers through creating verification middleware, secure password hashing using bcrypt, and critical user isolation logic that prevents unauthorized data access by validating JWT payloads against requested resources. It is an essential tool for building secure, stateless REST APIs that require robust user identity management and strict data privacy controls.

Key Features

Secure password hashing and verification with passlib and bcrypt
0 GitHub stars
Standardized signup, signin, and signout endpoint implementation patterns
Environment-based configuration for shared secrets and token expiration
JWT token verification middleware using the jose library
Automated user isolation logic to prevent cross-account data access

Use Cases

Implementing multi-user systems where data must be strictly isolated by user ID
Securing FastAPI endpoints to ensure only authenticated users can access sensitive resources
Synchronizing authentication state between a Python backend and a frontend using Better Auth

About

Key Features

Secure password hashing and verification with passlib and bcrypt
0 GitHub stars
Standardized signup, signin, and signout endpoint implementation patterns
Environment-based configuration for shared secrets and token expiration
JWT token verification middleware using the jose library
Automated user isolation logic to prevent cross-account data access

Use Cases

Implementing multi-user systems where data must be strictly isolated by user ID
Securing FastAPI endpoints to ensure only authenticated users can access sensitive resources
Synchronizing authentication state between a Python backend and a frontend using Better Auth