generated: '2026-07-19' method: searched source: https://fatora.io/api/authentication.php docs: https://fatora.io/api/authentication.php summary: types: - apiKey - http api_key_in: - header http_schemes: - bearer note: >- Two coexisting mechanisms. Payment endpoints (checkout, refund, recurring, verify) take a static merchant API key in an api_key header. Invoice/client/product endpoints require a short-lived Bearer JWT that is first minted by calling the Authorization endpoint with the api_key. schemes: - name: api_key type: apiKey in: header parameter_name: api_key description: >- Static merchant API key sent in the api_key request header. Used for payment-related endpoints (checkout, refund, recurring, verify). Found in the merchant dashboard under Integration in the sidebar. applies_to: - POST /v1/payments/checkout - refund - recurring - verify sources: - https://fatora.io/api/authentication.php - name: bearerAuth type: http scheme: bearer bearer_format: JWT description: >- Bearer JWT required for invoice, client and product endpoints. Obtained by POSTing to the Authorization endpoint with the api_key header; the response returns a bearer_token JWT that is then sent as Authorization Bearer on subsequent calls. token_endpoint: https://api.fatora.io/v1/Authorization/Authorize applies_to: - invoices - clients - products sources: - https://fatora.io/api/authentication.php