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Fiserv

Quick Start
  1. Sign up at fiserv.com and obtain API credentials
  2. Create a terminal in the Admin Console with the parameters below
  3. Start processing — the adapter is pre-built and ready to use

Go to Fiserv →

Overview​

Fiserv payment integration

Provider IDfiserv
CategoryCard Processors
Websitefiserv.com

Authentication​

HMAC-SHA256​

  1. raw_signature = api_key + client_request_id + timestamp + request_body_json
  2. signature = Base64(HMAC-SHA256(api_secret, raw_signature))

API Headers​

  • api-key: {api_key}
  • authorization: {signature}
  • auth-token-type: HMAC
  • timestamp: {unix_timestamp_milliseconds}
  • client-request-id: {UUID v4}
  • content-type: application/json

Resources​