Server demonstrates partial tool implementation with mixed quality. Tools have descriptions and basic input schemas, but several lack depth, parameter descriptions are minimal, and output schemas are not documented. The naming is action-oriented (verb_noun pattern), which is good. However, parameter documentation is sparse, error handling is absent, and the playground-style tools lack real-world robustness. STDIO transport limits practical deployment. Tools appear to prioritize UI rendering over functional completeness.

• Expand parameter descriptions to include expected format, constraints, and examples. For 'profile' in flame_graph, specify: 'Profile data as a JSON object with fields: name (string), children (array of call frames), selfTime (number in ms). If omitted, a simulated flame graph is generated.'
• Document output schemas explicitly in tool definitions. Add a 'returns' or 'output' field describing the structuredContent object. Example for list_sort: 'Returns object with items (array of {id, label}) and title (string).'
• Add input validation rules to parameter descriptions. Specify min/max for arrays (e.g. 'items: array of 1-100 objects'), length limits for strings (e.g. 'name: 1-255 characters'), and allowed value sets for enums (e.g. 'environment: one of [dev, staging, prod]').
• Define error handling. Specify what errors each tool can return (e.g. 'flame_graph: returns error if profile is invalid JSON; invalid format returns 'Profile format invalid: must be JSON object with name, children, selfTime'). Classify as retryable or user-fixable.
• Design tool composition paths. Document how tools can work together, e.g., 'Use database_query to fetch sales data, then pass results to list_sort for interactive filtering and sorting.' Include field mappings (e.g., database_query returns id, label fields that map to list_sort's items schema).
• Add semantic descriptions explaining WHEN to use each tool. Current descriptions focus on WHAT the tool does (UI rendering), not WHEN an LLM should call it. Example: 'Use list_sort when you need the user to reorder a dynamic list; use feature_flags for browsing configuration options across environments.'