The only available transport protocol of the Pricefx backend is HTTP(S). Standard HTTP headers and return codes as defined in RFC 2616 are used. The Pricefx API entirely relies on a defined URL scheme and additional data as part of a standard HTTP POST request. If no request body is required, HTTP GET can be used too (unless stated otherwise).
The payload of the HTTP requests and responses are formatted in **JSON** by default.
JSON is described in RFC 4627 and at [json.org](https://www.json.org/json-en.html). :::attention The JSON request should be properly identified by HTTP Header `Content-Type` set to `application/json`. ::: ## EncodingAll strings are UTF-8 encoded.
Pricefx servers use following TLS protocol versions:
- TLS 1.2 - TLS 1.3