Adfin API (1.0.0)
Adfin uses OAuth 2.0 access tokens to authenticate all API requests.
There are two contexts in which tokens are issued:
Biller Access Tokens — Generated via the Authorization Code flow when a biller connects their Adfin account. These tokens grant access to that biller's data (invoices, payment requests, customers, etc.).
Platform Access Tokens — Generated via the Client Credentials flow for Adfin's own integrations and system events. These tokens authenticate Adfin as the platform itself (not as a specific biller) and are required for endpoints like
/api/webhook.
Download OpenAPI description
Languages
Servers
Mock server
https://developer.adfin.com/_mock/bulk-upload/
Production API Server URL
https://api.adfin.com/api/
Staging API Server URL
https://api.staging.adfin.com/api/