Exchange client credentials for a short-lived JWT access token.
This endpoint implements the OAuth2 client_credentials grant:
client_id and client_secret issued during onboardingThis endpoint is unauthenticated — it is the authentication step itself.
The request mode (sandbox / production) is determined by the server URL
you call (e.g. sandbox-api.finogates.com vs api.finogates.com).
The client’s environment must match the resolved mode.
Standard rate limits apply. Repeated authentication failures may trigger temporary blocks.
Documentation Index
Fetch the complete documentation index at: https://developer.finogates.com/llms.txt
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OAuth2 client-credentials token exchange request.
Client identifier issued during onboarding. Prefixed with fg_test_cl_ (sandbox) or fg_live_cl_ (production).
5 - 120"fg_test_cl_aBcDeFgHiJkLmNoPqRsTuV"
Client secret issued during onboarding. Shown only once at creation or rotation.
10 - 255"fg_test_sk_aBcDeFgHiJkLmNoPqRsTuVwXyZaBcDeFgHiJkLmNoPqRsTuVwXyZ"