v1.0.1
OpenAPI 3.1.1
PayHQ API
The Merrco Payfirma API is a RESTful web service that uses HTTP GET & POST transfer methods with JSON messaging format for all requests to and responses from the server.
Client Libraries
The Merrco Payfirma API is a RESTful web service that uses HTTP GET & POST transfer methods with JSON messaging format for all requests to and responses from the server.