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Anthale authenticates runtime API requests with a server-side API key sent in the Authorization header.

Header format

Send your Anthale API key as a bearer token:

Server-side only

Anthale API keys are server-side credentials and can be created in the dashboard. Keep them in your secret manager or deployment platform, and do not ship them in browser code, mobile apps, or any other public client.

Example

Authentication failures

Anthale returns 401 when the API key is missing or invalid. Anthale returns 403 when the request is authenticated but not allowed to access the resource. For error handling guidance, read Errors.

Next steps

Next, return to API Reference, read Errors, or create a key in Create an API Key.
Last modified on March 19, 2026