This repository is primarily an SDK/framework for building MCP servers, not a production MCP server itself. The 5 tools evaluated are demonstration examples across different files (basic_tool.py, tool_progress.py, legacy_as_server.py). While schemas are present and descriptions exist, they are minimal and lack depth. Tool naming follows basic conventions (verb_noun), but descriptions are quite short (avg ~40-50 chars), parameter documentation is sparse, and output schemas are not explicitly documented. Error handling guidance is absent. The 'get_time' tool appears twice (duplicate in evaluation data), suggesting the actual active tool set may be smaller. As an SDK, the framework demonstrates competence, but the example tools do not meet production quality standards.

• Expand all tool descriptions to 100-200 characters. Include: what the tool does, when to use it (vs similar tools), and what it returns. Example: 'sum: Adds two integers and returns their sum. Use this for arithmetic operations on numbers. Returns a single integer result.'
• Document output schemas explicitly for all tools. For 'get_weather', specify: Returns {temperature: number, unit: string, condition: string, city: string}. For 'sum', Returns {result: integer}.
• Add enum constraints for the 'unit' parameter in get_weather. Change description to 'Temperature unit (one of: celsius, fahrenheit, kelvin; default: celsius)' and define the enum formally in the JSON Schema.
• Add error recovery guidance to all tool descriptions. E.g., 'If city not found, get_weather returns an error. Suggest to the user a nearby city or ask them to clarify the city name.'
• For 'long_running_task', document that it supports progress updates and explain when/how the LLM should poll for progress vs. wait for completion.
• Add tool annotations (readOnlyHint: true) to tool definitions in the implementation to signal to MCP clients that these tools are safe and non-destructive.
• Remove the duplicate 'get_time' tool definition or clarify if they are intentional variants (e.g., different auth contexts).

Inferred effective spec: 2026-07-28+.

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