Stephen Spector, Xen.org community manager has just announced that he’s calling for the community willing to work on completing the existing Xen-API specification.
“So, I am announcing a new community effort to complete the development of the Xen-API utilities. If you are interested in working on the Xen-API project please email me at [email protected] and I will call a meeting in mid-May with all people interested to get the project underway.”
More information about the Xen API can be found on the XenSource Wiki