701 Error encountered when calling connect/auth

When authenticating a Grant in Nylas, you may encounter an error with status 701, as shown below. This error indicates an issue with the authentication process.

There are two known causes for this error:

1. Incorrect Redirect URI:

Cause: Wrong redirect URI used in the code that hasn't been registered in the Nylas Dashboard.

Solution: Register the callback URI (redirect URI) in the Hosted Auth section of the Nylas Dashboard.

Please refer to our documentation for more information: 700 Response Error.

2. Incorrect API Server URL:

Cause: Incorrect API server URL used.

Solution: If you are using the US API server (i.e., https://api.us.nylas.com) but the application is located in the EU datacenter, you should use https://api.eu.nylas.com based on our documentation: API servers

Updated July 23, 2024 14:44