Three tools with clear names and reasonable descriptions, but significant gaps in parameter documentation and output schema specification. search_api and describe_schema have minimal parameter descriptions (only 'query' and 'id' with brief text). execute lacks parameter descriptions for timeoutMs and memoryMb. No tool documents its output schema structure, forcing LLMs to infer response format. Error handling is basic (generic error messages in mcpServer.ts). Naming follows verb_noun convention well (search_, describe_, execute). Zod validation present but not exposed to LLM for constraint clarity.

• Add output schema documentation to each tool. Example for search_api: 'Returns {results: [{name, description, signature, example}], total: number}'. Document execute return type (awaited expression result as JSON).
• Add parameter descriptions for execute: timeoutMs (default 15000, range 1000-60000 ms), memoryMb (default 64, range 16-512 MB). Include what happens when limits are exceeded.
• Expand search_api description to clarify: 'Searches API endpoint names, field names, and documentation. Returns TypeScript method signatures and usage examples. Use describe_schema to drill into specific endpoint details.'
• Enhance execute description with: 'Globals fr and ecfr proxy to FederalRegister.gov and eCFR APIs. Returns the result of the awaited expression as JSON. Throws on syntax errors, timeouts, or memory limits.'
• Improve error messages in CallToolRequestSchema handler to include recovery hints: 'Unknown tool: {name}. Available tools: search_api, describe_schema, execute' and catch-block errors like 'Invalid input for {tool}: {constraint}. Expected {type}.'.

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

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