Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations indicate non-read-only, open world, idempotent, non-destructive. The description adds crucial context: 'The MCP does not sign, submit, or execute transactions' and describes offchain storage under an unguessable handle. This goes beyond annotations to clarify the tool's scope and limitations. No contradictions detected.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.