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Overpay has a REST-ful API. To accept payments you need to send requests of a format specified for each transaction type and endpoint. However, regardless the type, each request to Overpay API must meet the following requirements:

Mandatory request parameters are labeled as * required. Non-labeled parameters are considered optional.


As of September 15, 2022, the API v.3 is already configured for all - endpoints. To submit requests to this API version, just add the X-API-Version: 3 header to the request. For response parameters and their description, please use the API version 3 guide.