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Username and Password Grant Type

The Username and Password grant type uses a basic authentication key to generate a token. When you create the basic authentication key in the Dashboard, this stores the username and password used in the API token request.

Token Request

This request provides the client id and basic user credentials in exchange for an API token.

curl -X POST \
  https://tyk.cloud.tyk.io/oauth-api/oauth/token/ \
  -H 'Content-Type: application/x-www-form-urlencoded' \
  -d 'grant_type=password&client_id=ed59158fa2344e94b3e6278e8ab85142&username=oauthapiusername&password=oauthapipassword'
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 password
client_id The OAuth client id, in this case ed59158fa2344e94b3e6278e8ab85142.
username The basic username, in this case oauthapiusername.
password The basic password, in this case oauthapipassword.


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

  "access_token": "580defdbe1d21e0001c67e5ce3ea17db02be4c62ba15089bbcfd1f80",
  "expires_in": 3600,
  "refresh_token": "YjdhOWFmZTAtNmExZi00ZTVlLWIwZTUtOGFhNmIwMWI3MzJj",
  "token_type": "bearer"

Sequence Diagram

Username and Password Grant