Tell the agent to call whoami and to return that subject. Do not paste the bearer into the instructions.
What the model can see
The model can see the subject the hook already verified, and a refusal when the hook stopped the call. It cannot see the access token or the client secret. A prompt that asks the model who the caller is ignores the hook. The hook already returned unauthorized when userinfo did not accept the bearer.
Do not copy the token into graph state, crew inputs that tasks render, callback state the model reads, or telemetry context.
Related
| Read | To learn how to |
|---|---|
| Authorizing tool calls for Vercel AI SDK | Refuse work after the subject is known |
| Custom channel auth for Vercel AI SDK | Keep the bearer on the hook |
| Vercel AI SDK | See the planned sample |
| API keys and M2M for Vercel AI SDK | Keep the secret on the caller |