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Test your MCP server’s implementation of tools, prompts, and resources. You can manually trigger them to quickly iterate on your implementation.

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Tools

MCPJam Inspector Logo
  • View all tools, tool name, tool description.
  • Search for tools
  • View tool params
  • Trigger a tool with params
  • Support for elicitation

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Save requests

You can save a tool request. Saved requests will show up in the Saved Requests tab. They are stored in your browser local storage. Clicking on a saved request will fill out a tool with the params you saved.

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Resources

  • View all resources, resource name, location, mimetype
  • Read a resource

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Prompts

  • View all prompts, prompt name, prompt description
  • View prompt params
  • Fetch a prompt with given params

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Using prompts in the playground

You can use MCP prompts directly in the LLM playground by typing / in the chat input. This opens a menu of available prompts from your connected servers. When you select a prompt, it appears as an expandable card showing the server, description, arguments, and a preview of the content before you send it to the LLM.