Developer Center

Our API infrastructure utilizes consistent terminology and labeling


The Paychex API is built using Representational State Transfer (REST) architecture. This RESTful style will communicate over Hypertext Transfer Protocol using HTTP verbs for performing actions. Security will be a combination of authorization framework using OAuth 2.0 and Paychex client access. Request and response payloads will be formatted using JavaScript Object Notation (JSON) to represent a resource (additional formats will be available in future releases). Resources will provide context specific Hypermedia Controls that provides you a way to manipulate additional resources.