WordPress supports the Pingback XML-RPC API. This support was added in WordPress 1.5.0.

pingback.ping

Register a pingback.

Parameters

• string sourceUri
• string targetUri

Return Values

• string: For debugging.

Errors

See spec for possible fault codes.

pingback.extensions.getPingbacks

Retrieves list of URLs that pingbacked the given URL.

Parameters

• string url: URL of a post on this blog.

Return Values

• array of strings: URLs that pingbacked url.

Errors

• 33
  • If unable to convert url to a post on this blog.
• 32
  • If the post does not exist.