modelcontextprotocol/inspectorMCPMCP Server

inspector

Visual testing tool for MCP servers

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1.4kforks

TypeScript

Quality signals

ActiveNo testsNo CIThin docsNo licensePopular

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AI summary

Auto-generated overview of what this skill does and when to reach for it.

Browser-based tool for testing and debugging MCP servers with a React UI and Node proxy.

Use this when

Testing a new MCP server before deployment
Debugging unexpected server behavior or responses
Validating server compliance with MCP protocol
Inspecting server logs and message flows in real-time
Exporting server configs for use in other MCP clients

Don't use when

Need to inspect network traffic between MCP clients and servers
Debugging non-MCP servers or APIs
Running in production environments without authentication

Capabilities

Interactive web UI for sending and receiving MCP messages
Supports stdio, SSE, and streamable-http transport protocols
Real-time log viewer for server output and errors
Export server configs as mcp.json for reuse
Bearer token authentication for SSE connections
Proxy server with session token protection

InstallMCPRun via npx (Node)

Universal installANY TOOL

$ npx skillcity@latest modelcontextprotocol/inspector

Auto-detects the skill or MCP server in this repo and installs it for Claude Code, Codex, Cursor, Cline, OpenCode, Gemini CLI, Anti-Gravity, OpenClaw and Hermes.

Requires Node.js 18+ (ships with npx).

Or install manually

npx -y inspector

MCP Configuration

Add this to your claude_desktop_config.json

{
  "mcpServers": {
    "inspector": {
      "command": "npx",
      "args": [
        "-y",
        "inspector"
      ]
    }
  }
}

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inspector