Hi George,

Apologies for the delay here. Yes, I've open sourced the im the
implementations and the protocol specs can be seen within the repo's linked
below:

https://github.com/orgs/cred-ninja/repositories

Thanks,
Kieran Sweeney
https://cred.ninja


On Fri, Mar 13, 2026 at 2:01 PM <[email protected]> wrote:

> Very interesting. Do you have any use case documents from which the
> requirements you highlight as missing are defined? I’d love to see those.
>
> Thanks,
> George
>
> --
> George Fletcher
> Practical Identity LLC
>
> On Mar 11, 2026, at 4:50 PM, Kieran Sweeney <[email protected]> wrote:
>
> 
>
> Hi all,
>
> I am writing to share comments on draft-klrc-aiagent-auth-00, attached as
> a PDF. The core framework is well-grounded, and I have focused my feedback
> on three areas where the delegation chain mechanics need further
> specification work.
>
> The comment covers: (1) underspecification of multi-hop delegation
> semantics in RFC 8693 as applied to this framework, specifically the
> absence of chain verification, scope attenuation rules, and revocation
> propagation standards; (2) a delegation chain splicing vulnerability in RFC
> 8693 disclosed on the OAuth WG list in February 2026, which is directly
> relevant to Sections 10.1-10.4; and (3) an architectural failure mode in
> enterprise-managed authorization when the IdP is unavailable.
>
> I am also preparing a companion Internet-Draft
> (draft-sweeney-oauth-agent-delegation-00) that profiles RFC 8693 for
> multi-hop agent delegation chains -- covering delegation artifacts, chain
> verification, mandatory scope attenuation, and cryptographic context
> binding to resist the splicing attack. I plan to submit this draft ahead of
> IETF 125 and would welcome discussion on the WIMSE or OAuth lists.
>
> The comment PDF is attached. Happy to discuss any of the points raised.
>
> Best,
>
> Kieran Sweeney
>
> <IETF-CRE12-COMMENT.pdf>
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