Skip to content

One Payment

Technological payment solutions for online business

Website: One Payment

Login: One Payment

Follow the guidance for setting up a connection with One Payment as a payment service provider.

Set Up Account

Step 1: Contact One Payment support manager

Register an account in the back-office. Submit the required documents to verify it and gain access.

Step 2: Get credentials

Ask the One Payment support manager and obtain the necessary credentials:

  • Partner ID (partner_id)
  • Project ID (project_id)
  • Secret API key


Be sure to check with the manager if you require to provide a white list of IPs, and if so, specify IP addresses from the Corefy list.

Connect H2H Merchant Account

Step 1. Connect H2H account at the Corefy Dashboard

Press Connect at One Payment Provider Overview page in 'New connection' and choose H2H Merchant account option to open Connection form.


Enter credentials:

  • Partner ID (partner_id)
  • Project ID (project_id)
  • Secret API key (without a sign parameter)

Choose Currencies and Features. You can set these parameters according to available currencies and features for your One Payment account, but it's necessary to verify details of the connection with your Corefy account manager.


You have connected One Payment H2H merchant account!

Still looking for help connecting your One Payment account?

Please contact our support team!