Osaurus exposes only one tool (hello_world) with a minimal, hardcoded implementation embedded in a plugin scaffold template. The tool has a basic description ('Return a friendly greeting') and a valid JSON Schema for input parameters (name: string, required). However, the tool definition is inferred from template code in ToolsCreate.swift rather than explicitly registered via an MCP server interface. No MCP server implementation is visible in the provided source, only a CLI tool scaffolding system. The schema is present but minimal; descriptions lack context for LLM selection. No output schema is documented. No error handling guidance. The codebase shows a plugin architecture (C ABI surface, dynamic loading) but no evidence of MCP protocol implementation or tool registration.

• Implement an explicit MCP server (HTTP/SSE or Streamable HTTP) that registers tools via the tools/list and tools/call protocol endpoints.
• Document the output schema for hello_world: e.g., {"type": "object", "properties": {"message": {"type": "string"}}, "required": ["message"]}.
• Expand tool description to 50 - 150 characters explaining when to use it: 'Generates a personalized greeting for a given name. Use when you need to welcome a user or create a friendly message.'
• Add parameter descriptions: 'name (string, required): The person's name to greet. Must be 1 - 100 characters, no special characters.'
• Implement structured error responses with recovery hints: 'Invalid name format. Expected 1 - 100 alphanumeric characters. Got: "<value>"'.