A JWT-based authentication gem for Rails APIs with token refreshing, blacklisting, and easy integration.
API Guard is a JWT-based authentication solution specifically designed for Rails APIs. It provides a complete suite of authentication features including user registration, login, token refreshing, blacklisting, and secure endpoint protection. It solves the problem of implementing secure, stateless authentication in Rails API applications without reinventing the wheel.
Rails developers building JSON APIs that require secure, stateless authentication using JWT tokens. It's ideal for teams creating mobile backends, single-page application APIs, or microservices.
Developers choose API Guard because it provides a batteries-included, Rails-native solution for JWT authentication with sensible defaults. Unlike piecing together multiple gems, it offers a unified approach with token refreshing, blacklisting, and easy integration through generators and helpers.
JWT authentication solution for Rails APIs
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Handles JWT issuance, automatic refreshing, and blacklisting out-of-the-box, providing a secure authentication lifecycle without extra coding, as detailed in the token refreshing and blacklisting sections.
Offers generators for models, routes, and controllers with a convention-over-configuration approach, making setup quick within Rails applications, evidenced by the simple api_guard_routes helper.
Allows overriding default controllers and adding custom data to JWT payloads via methods like jwt_token_payload, enabling tailored authentication logic without forking the gem.
Includes helper methods like jwt_and_refresh_token for generating tokens in test environments, simplifying authentication testing for controllers, as mentioned in the testing section.
Only supports HS256 for JWT signing, lacking options for more secure asymmetric algorithms like RS256, which could be a dealbreaker for high-security or compliance-driven projects.
Requires creating and managing separate tables for refresh tokens and blacklisted tokens, adding complexity to the database and necessitating cleanup jobs for expired entries.
Tightly coupled with Rails and ActiveRecord, making it unsuitable for non-Rails projects or those using other frameworks, limiting its applicability in polyglot environments.