The Sindice RPC ping API  is developed according to the specification of the Pingback mechanism. The RPC method name has been adjusted to fit the majority of software that have pingback support (such as blogging engines).

The XML-RPC endpoint: http://sindice.com/xmlrpc/api

Method name: weblogUpdates.ping

An XML-RPC client should construct requests with the following elements:

RPC endpoint: http://blogsearch.google.com/ping/RPC2

Method name: weblogUpdates.extendedPing

Parameters: (should be sent in the same order as listed below)

Name of site

URL of site

URL of the page to be checked for changes

URL of RSS, RDF, or Atom feed

Optional a name (or "tag") categorizing your site content. You may delimit multiple values by using the '|' character.

The XML-RPC response will contain a <struct> with two members:

flerror (Boolean) set to true/1 if an error occurred

message (string) containing either "Thanks for the ping." (if successful) or an error message (if unsuccesful).