# Document Shepherd Write-Up for Group Documents
## Document History
1. Does the working group (WG) consensus represent the strong concurrence of a
few individuals, with others being silent, or did it reach broad agreement?
Yes, there was strong support for this document from the WG.
2. Was there controversy about particular points, or were there decisions where
the consensus was particularly rough?
No such points or decisions.
3. Has anyone threatened an appeal or otherwise indicated extreme discontent? If
so, please summarize the areas of conflict in separate email messages to the
responsible Area Director. (It should be in a separate email because this
questionnaire is publicly available.)
No such threats.
4. For protocol documents, are there existing implementations of the contents of
the document? Have a significant number of potential implementers indicated
plans to implement? Are any existing implementations reported somewhere,
either in the document itself (as [RFC 7942][3] recommends) or elsewhere
(where)?
KeyCloak 26.5
https://www.keycloak.org/2026/01/jwt-authorization-grant
Ping Identity has implementations based on existing functionality supporting
those specs.
Okta
https://developer.okta.com/blog/2025/09/03/cross-app-access
Auth0
https://auth0.com/docs/secure/call-apis-on-users-behalf/xaa
Okta Open Source
https://github.com/oktadev/okta-cross-app-access-mcp
Okta Standalone implementation
https://xaa.dev/
Basic testing implementation
https://motd.xaa.rocks/
WSO2 Identity Server has some basic building blocks
https://is.docs.wso2.com/en/latest/references/grant-types/#jwt-bearer-granthttps://is.docs.wso2.com/en/latest/references/grant-types/#token-exchange-grant
## Additional Reviews
5. Do the contents of this document closely interact with technologies in other
IETF working groups or external organizations, and would it therefore benefit
from their review? Have those reviews occurred? If yes, describe which
reviews took place.
Yes, it is related to the work of the WIMSE WG. Many of the people active at
the WIMSE WG are also active at the OAuth WG.
6. Describe how the document meets any required formal expert review criteria,
such as the MIB Doctor, YANG Doctor, media type, and URI type reviews.
Not applicable.
7. If the document contains a YANG module, has the final version of the module
been checked with any of the [recommended validation tools][4] for syntax and
formatting validation? If there are any resulting errors or warnings, what is
the justification for not fixing them at this time? Does the YANG module
comply with the Network Management Datastore Architecture (NMDA) as specified
in [RFC 8342][5]?
Not applicable.
8. Describe reviews and automated checks performed to validate sections of the
final version of the document written in a formal language, such as XML code,
BNF rules, MIB definitions, CBOR's CDDL, etc.
JSONLint was used to validate the JSON examples.
## Document Shepherd Checks
9. Based on the shepherd's review of the document, is it their opinion that this
document is needed, clearly written, complete, correctly designed, and ready
to be handed off to the responsible Area Director?
Yes, the document is well written and defines the OAuth interaction between
different trust domains.
I reviewed v06 and v07 of the document and the authors addressed the issues
I raised in v07 and v08.
10. Several IETF Areas have assembled [lists of common issues that their
reviewers encounter][6]. For which areas have such issues been identified
and addressed? For which does this still need to happen in subsequent
reviews?
Not needed.
11. What type of RFC publication is being requested on the IETF stream ([Best
Current Practice][12], [Proposed Standard, Internet Standard][13],
[Informational, Experimental or Historic][14])? Why is this the proper type
of RFC? Do all Datatracker state attributes correctly reflect this intent?
Proposed Standard.
The draft defines a new mechanism that preserves identity and authorization
information across trust domains that use OAuth.
12. Have reasonable efforts been made to remind all authors of the intellectual
property rights (IPR) disclosure obligations described in [BCP 79][7]? To
the best of your knowledge, have all required disclosures been filed? If
not, explain why. If yes, summarize any relevant discussion, including links
to publicly-available messages when applicable.
Brian
https://mailarchive.ietf.org/arch/msg/oauth/kTvSouMzS8Gws4t9JLstwmxWpcs/
Pieter
https://mailarchive.ietf.org/arch/msg/oauth/-24Nfmg3k-s-cpC9rD2BHCu6m-k/
Arndt
https://mailarchive.ietf.org/arch/msg/oauth/vqPIS_j_AUiFYztC7hnBhu4LI0k/
Mike
https://mailarchive.ietf.org/arch/msg/oauth/TZkod7RgLJZVgV4XY7Z5CbtHges/
George
https://mailarchive.ietf.org/arch/msg/oauth/MHaSQwTsb5ug_rnK8A3Lgqb3IBU/
Kelley
https://mailarchive.ietf.org/arch/msg/oauth/2zdY2k-VZXzLiPLzVGYYTyy4E7Y/
Aaron
https://mailarchive.ietf.org/arch/msg/oauth/jt3set63DlDOHZEsPoBtk91xIFU/
13. Has each author, editor, and contributor shown their willingness to be
listed as such? If the total number of authors and editors on the front page
is greater than five, please provide a justification.
Aaron was added recently to the list of authors based on his significant
contribution to the document that improved the quality of the document.
14. Document any remaining I-D nits in this document. Simply running the [idnits
tool][8] is not enough; please review the ["Content Guidelines" on
authors.ietf.org][15]. (Also note that the current idnits tool generates
some incorrect warnings; a rewrite is underway.)
None
15. Should any informative references be normative or vice-versa? See the [IESG
Statement on Normative and Informative References][16].
These were fixed in v08.
16. List any normative references that are not freely available to anyone. Did
the community have sufficient access to review any such normative
references?
No such references.
17. Are there any normative downward references (see [RFC 3967][9] and [BCP
97][10]) that are not already listed in the [DOWNREF registry][17]? If so,
list them.
None
18. Are there normative references to documents that are not ready to be
submitted to the IESG for publication or are otherwise in an unclear state?
If so, what is the plan for their completion?
None
19. Will publication of this document change the status of any existing RFCs? If
so, does the Datatracker metadata correctly reflect this and are those RFCs
listed on the title page, in the abstract, and discussed in the
introduction? If not, explain why and point to the part of the document
where the relationship of this document to these other RFCs is discussed.
No change of status of any existing RFCs.
20. Describe the document shepherd's review of the IANA considerations section,
especially with regard to its consistency with the body of the document.
Confirm that all aspects of the document requiring IANA assignments are
associated with the appropriate reservations in IANA registries. Confirm
that any referenced IANA registries have been clearly identified. Confirm
that each newly created IANA registry specifies its initial contents,
allocations procedures, and a reasonable name (see [RFC 8126][11]).
The IANA section looks good to me.
21. List any new IANA registries that require Designated Expert Review for
future allocations. Are the instructions to the Designated Expert clear?
Please include suggestions of designated experts, if appropriate.
Not applicable.
[1]: https://www.ietf.org/about/groups/iesg/
[2]: https://www.rfc-editor.org/rfc/rfc4858.html
[3]: https://www.rfc-editor.org/rfc/rfc7942.html
[4]: https://wiki.ietf.org/group/ops/yang-review-tools
[5]: https://www.rfc-editor.org/rfc/rfc8342.html
[6]: https://wiki.ietf.org/group/iesg/ExpertTopics
[7]: https://www.rfc-editor.org/info/bcp79
[8]: https://www.ietf.org/tools/idnits/
[9]: https://www.rfc-editor.org/rfc/rfc3967.html
[10]: https://www.rfc-editor.org/info/bcp97
[11]: https://www.rfc-editor.org/rfc/rfc8126.html
[12]: https://www.rfc-editor.org/rfc/rfc2026.html#section-5
[13]: https://www.rfc-editor.org/rfc/rfc2026.html#section-4.1
[14]: https://www.rfc-editor.org/rfc/rfc2026.html#section-4.2
[15]: https://authors.ietf.org/en/content-guidelines-overview
[16]: https://www.ietf.org/about/groups/iesg/statements/normative-informative-references/
[17]: https://datatracker.ietf.org/doc/downref/