Four tools with clear action verbs and reasonable descriptions (90-150 chars each). Input schemas present with type definitions and parameter descriptions. However, output schemas are not documented in the visible code, parameter descriptions lack format/constraint details (e.g., ttl_seconds accepts 'string' but should validate integer range 1-86400), and error handling guidance is absent. Tool names follow verb_noun pattern well (secret_handoff_*), but descriptions could be more specific about when to use each tool vs. alternatives. No evidence of pagination, structured output documentation, or recovery guidance in error cases.

• Add explicit output schema documentation for each tool. Example: 'secret_handoff_capture returns {handle: string, expires_at: number (Unix timestamp), single_use: boolean}'. Include this in tool descriptions or as a separate schema field.
• Change ttl_seconds parameter type from 'string' to 'integer' with minimum: 1, maximum: 86400 in the JSON Schema. Remove the validation text from description and let the schema enforce it.
• Add error recovery guidance to retrieve and revoke descriptions: 'If handle not found, call secret_handoff_status() to list active secrets and their handles.'
• Document secret_handoff_status output: 'Returns an array of active secrets with fields: handle, target, label, created_at, expires_at, single_use, lifecycle_status. Use this to discover available secrets before calling retrieve or revoke.'
• Add idempotency note to revoke: 'Calling revoke twice with the same handle is safe, the second call returns success with no effect.' Or clarify if it errors, so agents know whether to retry.