Webhooks in AX

[Joseph A Holsten]

Chris Obdam supposedly wrote:
> In the AX specs there is the openid.ax.update_url parameter. Can we  
> start using a webhook implementation for that?
> Would be nice to incorporate that into AX 2.0?
>
> openid.ax.update_url: http://openid.net/specs/openid-attribute-exchange-1_0.html#fetch_request
> webhooks: http://webhooks.org/

Is there a formal spec for webhooks? What would a webhook  
implementation for update_url look like?
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Joseph Holsten
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