The server defines 3 tools with basic schemas and descriptions. All tools have names that start with action verbs (fetch_, search_, send_), which is good. Descriptions are present but generic and lack crucial context about error conditions, dependencies, and use cases. Input schemas are present with type definitions, but parameter descriptions are minimal. Output schemas are undocumented. The tools show asymmetric parameter quality: fetch_user has minimal documentation, search_products includes a default value and rate-limit caveat in description (good), but send_notification lacks clarity on PII masking behavior and what constitutes 'strict mode'. No documented error handling or recovery guidance. This is typical C/C+ tier work, present but incomplete.

• Expand fetch_user description to 100 - 150 chars: explain what fields are returned (e.g., 'Returns user profile with id, name, email, created_at'), when to use it vs search_users, and what happens if the user is not found ('Returns error with available users to search from').
• Add parameter descriptions that exceed 30 chars and include format/constraint hints. E.g., 'user_id (integer, 1 - 999999): The unique user identifier. Required.' instead of 'The user ID to fetch.'
• Document output schemas for all three tools. State: fetch_user returns {id, name, email, ...}; search_products returns {results: [{id, name, price, ...}], total_count, next_cursor}; send_notification returns {sent_at, message_id, status}.
• Add explicit error handling docs. E.g., for fetch_user: 'Returns 404 with message "User not found. Call search_users(query=name) to find the user." Returns 500 with retry guidance if the database is unavailable.'
• Constrain search_products 'limit' to 1 - 100 (reasonable for search results) and document: 'limit (integer, 1 - 100, default=10): Maximum number of results to return.'
• Add enum constraint to send_notification 'priority' parameter. Specify valid values in the schema and description: 'priority (enum: low, medium, high, urgent; default=normal): Email priority level.'
• Document idempotency for send_notification: 'Sending the same notification twice with identical parameters (recipient_email, subject, body) within 60 seconds returns the original message_id rather than sending a duplicate.'

Inferred effective spec: <=2025-11-25.

• Relies on Logging (deprecated) - log to stderr or use OpenTelemetry