Client Credentials Grant Type

Last updated: 1 minute read.

The Client Credentials grant type uses the OAuth client credentials to generate a token.

Token Request

This request provides the client credentials in exchange for an API token.

curl -X POST \ \
  -H 'Content-Type: application/x-www-form-urlencoded' \
  -d 'grant_type=client_credentials&client_id=ed59158fa2344e94b3e6278e8ab85142&client_secret=MGQ3NzE2MGQtYTUyZC00ZTVlLWJjMTItMjE2MTM1MmE3N2M1'
Request Value
Method POST
URL Uses the special OAuth endpoint /oauth/token appended to the API URI e.g. https://<your-gateway-host>/<your-api-listen-path>/oauth/token.
Header Value
Authorization Basic authorization, using the client id and client secret of the OAuth client base64 encoded with colon separator. E.g. <oauth-client-id>:<oauth-client-secret>, in this case ed59158fa2344e94b3e6278e8ab85142:MGQ3NzE2MGQtYTUyZC00ZTVlLWJjMTItMjE2MTM1MmE3N2M1, which base64 encoded is ZWQ1OTE1OGZhMjM0NGU5NGIzZTYyNzhlOGFiODUxNDI6TUdRM056RTJNR1F0WVRVeVpDMDBaVFZsTFdKak1USXRNakUyTVRNMU1tRTNOMk0x.
Content-Type application/x-www-form-urlencoded
Data Value
grant_type client_credentials
client_id The OAuth client id, in this case ed59158fa2344e94b3e6278e8ab85142.
client_secret The OAuth client secret, in this case MGQ3NzE2MGQtYTUyZC00ZTVlLWJjMTItMjE2MTM1MmE3N2M1.


Response provides the token as access_token in the returned JSON which can then be used to access the API:

  "access_token": "580defdbe1d21e0001c67e5c40e93eac3d23494697470b90d7c81593",
  "expires_in": 3600,
  "token_type": "bearer"


It does not provide a refresh token.

Sequence Diagram

Client credentials grant type flow