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FastMCP Fundamentals

MCP Inspector & Debugging

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MCP Inspector

Testing with MCP Inspector

The MCP Inspector is a visual tool for testing and debugging MCP servers.

Installation & Usage

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Inspector Features

  • Tools Tab: List and call all registered tools
  • Resources Tab: Browse and read resources
  • Prompts Tab: View and test prompts
  • Logs: See all JSON-RPC messages

Testing a Tool

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