Quiz: Building Your Own MCP Server

1. What is an MCP server's role in relation to its data source?

It replaces the data source It's a thin wrapper that calls the service, handles errors, formats results, and returns them It caches all data locally It provides a visual dashboard

2. What does isError: true in a tool response tell Claude?

The server should be restarted The response is for logging only The call failed so Claude can respond appropriately — retry, tell the user, or try an alternative The error should be hidden from the user

3. What is the recommended approach for tool descriptions?

Keep them as short as possible Write what the tool does, when to use it, and what it returns — the description is the interface contract Use technical jargon to be precise Copy from the underlying API documentation

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