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• If this is meant to be a transparent wrapper, document the limitation: 'This server wraps external MCP servers and exposes their tools with a namespace prefix. Tool quality depends on the wrapped servers, review their definitions, not this wrapper's.' Add a discovery tool that introspects wrapped servers and returns their actual schemas and descriptions so clients can understand what they're calling.
• For tool naming, consider a more descriptive template than `{functionsPrefix}_{wrappedToolName}`. Option: include the wrapped server's name for context: `{wrappedServerName}_{toolName}` so agents understand which backend is being called.
• Rewrite tool descriptions to remove namespace scope language. Instead of 'Use this tool only in the "functionsPrefix" scope', structure as: 'Calls the {wrappedToolName} function from the {wrappedServerName} server. [Original description]. This tool is namespaced with prefix {functionsPrefix} to avoid name collisions.'
• Add explicit error handling in the tool callback. Wrap `wrappedServer.callTool()` in try-catch with error classification: if the error is a timeout, mark it retryable; if the wrapped server returned invalid JSON, include the raw response for debugging; if the tool doesn't exist, suggest available alternatives by listing tools from the wrapped server.
• Document output schemas. In the tool registration, add a schema field describing the expected structure: `{ content: Array<{ type: string, text: string }>, metadata?: { executionTimeMs?: number, wrappedServerName?: string } }`. This helps LLMs understand what to extract from results.