Single tool with severely deficient naming, description, and schema. Tool name '{functionName}__{routePath}__{method}' is a template placeholder, not a verb-noun action name, violates core naming pattern. Description is generic boilerplate ('Invoke {method} {routePath}...') with no context for LLM selection. Input schema present but parameters lack descriptions (functionName, routePath, method, body, query, params all undescribed). No output schema documented. No error handling guidance. Tool appears dynamically generated from function metadata rather than explicitly registered with production-grade definitions.

• Replace template-based tool naming with explicit verb-noun actions. Register tools as 'invoke_function_get', 'invoke_function_post', etc., or better: expose domain-specific tool names derived from function metadata (e.g., 'get_user_profile', 'create_order').
• Add substantive descriptions to each tool explaining what it does, when to call it, and what it returns. Example: 'Invoke a GET request on the user-profile function to retrieve user details. Returns user object with id, name, email, created_at.'
• Document all input parameters with type, format, and constraints. Example: functionName (string, required, 1-64 chars, alphanumeric+underscore), routePath (string, required, must start with /), method (enum: GET|POST|PUT|DELETE|PATCH).
• Document the output schema with field names, types, and descriptions. Specify HTTP status codes and error response structure.
• Implement error handling that returns actionable messages: 'Function not found: myFunc. Available functions: [list]. Did you mean: myFunc_v2?' instead of raw 500 errors.