CubeLoop defines 3 tools with schemas and descriptions present, but quality is inconsistent. 'echo' is a trivial test tool. 'deferred_tool_call' and 'load_tools' have reasonable descriptions (100+ chars) and complete input schemas with typed parameters and descriptions. However, no output schemas are documented anywhere in the source, critical for LLM planning. Parameter descriptions exist but are minimal (e.g., 'Name of a deferred tool' lacks context on discovery or error cases). No error handling guidance, no examples of valid/invalid inputs, and no indication of idempotency or side effects. The deferred tool pattern itself is novel but underdocumented for LLM consumption.

• Document the output schema for each tool. For 'deferred_tool_call', specify what the result of the invoked tool looks like. For 'load_tools', document the structure of the returned tool catalog (e.g., list of tool objects with name, description, schema).
• Expand parameter descriptions with discovery hints and error cases. E.g., 'group_id: The group_id from your Deferred tool groups catalog. Call load_tools with no arguments first to see available groups. Returns error if group_id does not exist.'
• Add error handling guidance to each tool description. E.g., 'If tool_name is not found, the error will list available tools in the loaded group. Retry with a valid name from that list.'
• Remove or clearly mark 'echo' as a test/demo tool not intended for production use. If it is meant for testing, document its purpose and consider moving it to a separate test server.
• Document idempotency and side effects. E.g., 'load_tools is idempotent, calling it multiple times with the same group_id has no additional effect beyond the first call.'