PostRFP's API now conforms the the Open API v3 standard (formerly Swagger).
The Open API specficies a standard, machine-readable format for documentation of a web service json/http API. The use of a standard format enables the automatic generation of client libraries to consume the API.
In practical terms this means that it is now easier to integrate PostRFP with 3rd party systems.
Details of the specification are here: http://spec.openapis.org/oas/v3.0.3