The XACML-JSON PDP API provides a standards-based HTTP API for decisions determined based on the policies configured within the PingAuthorize Server Policy Decision Service.

The XACML-JSON PDP API is implemented as a single endpoint that consuming application servers can access using POST requests to the /pdp path. The HTTP requests must include the appropriate Content-Type and Accept headers, and request bodies must adhere to the XACML-JSON standard. For more information, see Requests and responses.

The XACML-JSON PDP API supports the Multirequests JSON object, which allows a client to make multiple decision requests in a single HTTP request.

A successful XACML-JSON PDP API request goes through a two-phase flow:

1. The client makes the XACML-JSON request, which is received by the XACML-JSON PDP API. The API converts the request to a PingAuthorize Server batch decision request and attempts to authorize the client.

2. On successful authorization, the request is handed off to the Policy Decision Service to process decisions in batch for the XACML-JSON PDP API. The API then converts the batch decision responses to a XACML-JSON response and writes the response to the client.