Server exposes 7 tools with basic schemas and descriptions, but critical gaps undermine production readiness. All tools have descriptions (10-50 chars, mostly adequate), and input schemas are present with type definitions. However, parameter descriptions are sparse or missing entirely (e.g., 'query' in check_emails has no description). Output schemas are completely undocumented, LLMs cannot infer what these tools return. Error handling is absent: no guidance on retryability, user-fixable vs fatal errors, or recovery paths. Security concerns: check_emails and get_todays_calendar delegate to external MCPs via HTTP with token injection, but no validation, timeout handling, or error classification. Naming is verb-first and clear (get_*, log_*, set_*), but composition issues exist: set_task writes to a local file rather than integrating with a task queue, and check_emails/get_todays_calendar are thin wrappers around external services with no fallback. No pagination, no batch operations, no idempotency guarantees.

• Document output schemas for all tools. Example: get_memory_index should return {"topics": [{"name": string, "size": integer, "modified": ISO8601}], "total": integer}. get_recent_logs should return {"entries": [{"timestamp": ISO8601, "text": string, "source": string}], "count": integer}.
• Add parameter descriptions and constraints. For check_emails: 'query' → 'Gmail search query (e.g. "from:[email protected] is:unread"). See Gmail search syntax docs.' For get_recent_logs: 'limit' → 'Max entries to return (1 - 100, default 20).'
• Implement error handling with recovery guidance. Wrap external service calls in try-catch. Return structured errors: {"error": "service_unavailable", "message": "Gmail MCP unreachable. Retry in 30s or check GOOGLE_MCP_TOKEN.", "retryable": true}. Never return raw HTTP status codes.
• Refactor set_task to use a proper task queue (e.g. Redis, database) instead of filesystem writes. Add idempotency via task_id. Implement a confirm_task tool for destructive operations.
• Add audit logging: log tool calls with timestamp, caller identity, parameters (excluding secrets), and result. Validate GOOGLE_MCP_TOKEN at server startup. Implement rate limiting (e.g. 10 calls/min per tool) to prevent runaway agents.