OAuth can prove that a request may reach a resource. It does not, by itself, tell an operator the full story of the actor holding the token. That distinction matters once software can plan, call tools, retry, and act across several systems.
Source: [Dev.to](https://dev.to/fathin_dosunmu/your-ai-agent-has-an-oauth-token-does-it-have-an-identity-a9h)