Yadis

[Johannes Ernst]

Gotta nitpick, sorry:

> In summary:
>
> * Yadis is a protocol for discovering what identity-related  
> services are
> available for a given URL.

Or other services, there's nothing in Yadis that per se has anything  
to do with identity. You could, for example, use it to say "this URL  
accepts Mastercard", or "here is the list of mirror servers for the  
same content" or whatever using Yadis.

> * OpenID authentication is one such service.
>
> * NetMesh's LID is another such service.

Actually LID is a number of them, like for authenticated message  
sending, authenticated message receiving, traversals and selections,  
signing using public key crypto, format negotiation, vCard, FOAF, ...  
and there will be more.

Jan Rain's SREG is another.

The i-names contact service is another.

One could even advertise things like "this URL understands blog  
commenting API X" instead of hacking it into HTML HEAD as everybody  
seems to be doing these days.

> * Other services can be added at any time by anyone, without  
> discussing
> it with the Yadis community. (though of course, such discussion is
> welcomed!)

Yes!

> Thus, the aim of Yadis is to provide a standard way to ask questions
> like "Does this URL support <service X>?" or "What services does this
> URL support?"

And note that it also works for XRIs aka i-names, which is really  
from where we got the Yadis XRDS format in the first place!

>
> The aim of OpenID is to authenticate as a URL-based identity.
>
>
>
>
> _______________________________________________
> general mailing list
> general at openid.net
> http://openid.net/mailman/listinfo/general

Johannes Ernst
NetMesh Inc.

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