> ## Documentation Index
> Fetch the complete documentation index at: https://docs.sudo.africa/llms.txt
> Use this file to discover all available pages before exploring further.

# Authentication

Sudo's API uses OAuth 2.0 Bearer Token to authenticate requests. All API calls must include a bearer token.

<CodeGroup>
  ```curl curl theme={null}
  GET /cards HTTP/1.1
  Host: api.sandbox.sudo.africa
  Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cC...
  ```
</CodeGroup>

<Warning>
  An invalid, missing, or expired token will result in `HTTP 401 Unauthorized` responses.
</Warning>