Falcor API: Authentication
This tutorial will show you how to add authorization to a Falcor API. We recommend you to Log in to follow this quickstart with examples configured for your account.
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Configure Auth0 APIs
Create an API
In the APIs section of the Auth0 dashboard, click Create API. Provide a name and an identifier for your API, for example
https://quickstarts/api. You will use the identifier as an
audience later, when you are configuring the Access Token verification. Leave the Signing Algorithm as RS256.
By default, your API uses RS256 as the algorithm for signing tokens. Since RS256 uses a private/public keypair, it verifies the tokens against the public key for your Auth0 account. The public key is in the JSON Web Key Set (JWKS) format, and can be accessed here.
Permissions let you define how resources can be accessed on behalf of the user with a given access token. For example, you might choose to grant read access to the
messages resource if users have the manager access level, and a write access to that resource if they have the administrator access level.
You can define allowed permissions in the Permissions tab of the Auth0 Dashboard's APIs section.
This example demonstrates:
Validate Access Tokens
Add express-jwt, express-jwt-authz, falcor-express, falcor-router, and falcor-http-datasource to your project.
Configure the express-jwt middleware to use the remote JWKS for your Auth0 account.
Protect API Endpoints
The routes shown below are available for the following requests:
GET /api/public: available for non-authenticated requests
GET /api/private: available for authenticated requests containing an Access Token with no additional scopes
GET /api/private-scoped: available for authenticated requests containing an Access Token with the
To protect an individual route that requires a valid JWT, configure the route with the
checkJwt express-jwt middleware.
Individual routes can be configured to look for a particular
scope by setting up another middleware with the express-jwt-authz package. To do so, provide an array of required scopes and apply the middleware to any routes you wish to add authorization to.
If you want to configure CORS, add this code to your Falcor app (assuming your Falcor app is hosted on