Yadis Specification
From Yadis
Implementors: 1.0 uses the XRDS and XRD schemas of Extensible Resource Identifier (XRI) Resolution V2.0, Working Draft 10. The changes made by that working draft to the XRD schema do not affect the Yadis protocol nor the Yadis document. Yadis Specification Version 1.0 has no other substantive changes from Yadis Draft Specification Version 0.92.
The earlier version working draft specifications are available at Yadis Documents.