# JWT Authentication

> [JSON Web Token (JWT)](https://jwt.io/) is a JSON-based open standard
> ([RFC 7519](https://tools.ietf.org/html/rfc7519)) for creating access tokens that assert some
> number of claims. For example, a server could generate a token that has the claim "logged in as
> admin" and provide that to a client. The client could then use that token to prove that he/she is
> logged in as admin. The tokens are signed by the server's key, so the server is able to verify
> that the token is legitimate. The tokens are designed to be compact, URL-safe and usable
> especially in web browser single sign-on (SSO) context.
>
> ―[Wikipedia](https://en.wikipedia.org/wiki/JSON_Web_Token)

- For Symfony users, check out the [JWT Authentication with Symfony documentation](/symfony/jwt.md).
- For Laravel users, explore the [JWT Authentication with Laravel documentation](/laravel/jwt.md).