API v2 reference — For the previous v2 documentation, see fawaterak-api.readme.io/reference/overview. API v2 will be deprecated on 1 Jan 2027.

Public API transactions (API v3), enables you to accept online payments through a unified and flexible integration platform. Integration types: - API integration - Server to Server integration - Iframe integation - Host Fawaterk transaction link at your Website. - Mobile integration - Native apps via OAuth + TR APIs **Authentication overview** - **OAuth client credentials** — machine-to-machine (`POST /oauth/token` with `grant_type=client_credentials` → Bearer on `/api/v3/*` transaction and payment-method endpoints). - **OAuth refresh token** — renew an access token with `POST /oauth/token` and `grant_type=refresh_token` when your integration stores a refresh token from the initial token response. - **Domain hash** — browser iframe without a merchant backend (`FAWATERAK-HASH-KEY` + `FAWATERAK-DOMAIN`; see **Iframe integration**).