MCP Inspector已验证

@modelcontextprotocol

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基本信息

分类

开发工具

许可证

NOASSERTION

传输方式

stdio

作者

modelcontextprotocol

关于 MCP Inspector

Visual testing tool for MCP servers

MCP Inspector 配置

使用下面的配置,将此服务器添加到你的 MCP 客户端。

{
  "mcpServers": {
    "inspector": {
      "command": "npx",
      "args": [
        "@modelcontextprotocol/inspector"
      ]
    }
  }
}

MCP Inspector 工具

工具列表暂未提供

当前收录暂时没有可展示的工具列表，不代表服务没有工具。请查阅项目文档了解支持的能力。

点击上方按钮,在临时沙箱中运行此服务器并实时获取工具列表。

概览

What is MCP Inspector?

MCP Inspector is a developer tool for testing and debugging MCP servers. It consists of a React-based web UI (MCPI) that connects to MCP servers via a Node.js proxy (MCPP) supporting stdio, SSE, and streamable-http transports. It is intended for developers building or debugging MCP server implementations.

How to use MCP Inspector?

Run npx @modelcontextprotocol/inspector to start the UI at http://localhost:6274. To inspect a server from its repository, use npx @modelcontextprotocol/inspector node build/index.js with optional arguments and -e flags for environment variables. A Docker image is also available. Ports can be customized via CLIENT_PORT and SERVER_PORT environment variables.

Key features of MCP Inspector

Interactive web UI for testing MCP servers
Supports stdio, SSE, and streamable-http transports
Bearer token authentication with session tokens
Export server launch configurations as mcp.json
Real-time adjustable timeout settings
Persists configuration across sessions

Use cases of MCP Inspector

Debugging MCP server implementations during development
Testing server tools and resources interactively
Validating server configuration for different transport protocols
Exporting server configurations for use in clients like Cursor or Claude Code

常见问题

Is MCP Inspector a network proxy for intercepting traffic?

No, it functions as both an MCP client and an HTTP server, enabling browser-based interaction with MCP servers via different transport protocols.

What are the runtime requirements?

Node.js version ^22.7.5 is required.

How does authentication work?

The proxy requires a session token (randomly generated) sent as a Bearer token in the Authorization header. The token is shown in the console and can be pre-filled in the UI.

Can I expose the inspector to other devices?

By default it binds only to localhost. Binding to all interfaces (`HOST=0.0.0.0`) is possible but dangerous because the proxy can spawn local processes.

What transport protocols does the inspector support?

It supports stdio, SSE (Server-Sent Events), and streamable-http transports.

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