Hey Warren, Good question. Current OAuth doesn't have a standard way to scope access *to specific models* or attach usage limits (spend/rate) directly to the token metadata without heavy custom extensions, right? This ID tries to standardize that delegation layer.
Justin, We can leverage RAR type for this? -- Thank you, Hemanth.HM <http://www.h3manth.com> On Thu, Dec 25, 2025 at 1:31 PM Justin Richer <[email protected]> wrote: > It is an extremely terrible idea to create a structure for scopes. I've > done this several times in different ecosystems and it always starts out ok > but falls apart quickly. Do not repeat this mistake. > > If you need structure for access, define a RAR type, that's what it's > there for. > > - Justin > ------------------------------ > *From:* Hemanth H.M <[email protected]> > *Sent:* Wednesday, December 24, 2025 4:41 PM > *To:* [email protected] <[email protected]> > *Subject:* [OAUTH-WG] [New I-D] draft-hemanth-oauth-ai-scopes-00 - OAuth > 2.0 Extension for AI Model Access > > Hi OAuth WG, > > I've submitted a new Internet-Draft for your consideration: > > draft-hemanth-oauth-ai-scopes-00 - OAuth 2.0 Extension for AI Model Access > > Problem: AI model APIs (OpenAI, Anthropic, Google, etc.) require API key > delegation, but current practices involve sharing master keys directly with > third-party applications—no scoping, no revocation, no usage limits. > > Proposal: Extend OAuth 2.0 with: > > > 1. Standard scope syntax: ai:<provider>:<model>:<capability> > 2. Token metadata for spend/rate limits > 3. Token introspection extensions for usage tracking > 4. Security considerations (DPoP/mTLS for high-security deployments) > > > GitHub: https://github.com/hemanth/oauth-ai-scopes > > I'd welcome feedback on the scope syntax, alignment with existing OAuth > extensions (RFC 8707, RFC 9449), and whether this is something the WG would > consider adopting. > > P.S: I also started https://okap.dev as a separate protocol, in case... > > -- > Thank you, > Hemanth.HM <http://www.h3manth.com> > >
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