Leave the bearer out of the prompt. The hook reads invocation state the host set, not text the model wrote.
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 Strands Agents | Refuse work after the subject is known |
| Custom channel auth for Strands Agents | Keep the bearer on the hook |
| Strands Agents | See the planned sample |
| API keys and M2M for Strands Agents | Keep the secret on the caller |