What is MCP Inspector — Debug and Test MCP Servers?

Official debugging tool for MCP servers. MCP Inspector provides a web UI to connect, test tools, inspect messages, and validate responses from any MCP server interactively.

Is MCP Inspector — Debug and Test MCP Servers free to use?

Yes. MCP Inspector — Debug and Test MCP Servers is freely available on TokRepo. Check the Source & Thanks section on the asset page for the specific open-source license.

How do I install MCP Inspector — Debug and Test MCP Servers?

Visit the asset page on TokRepo and click "Copy for agent" to get the installation instructions. Most assets can be installed with a single command.

MCP Inspector — Debug and Test MCP Servers

What is MCP Inspector?

Anthropic's official MCP server debugging tool. A web UI to connect, browse tools, send test requests, and inspect messages.

TL;DR: Official MCP debugging tool. Web UI connects to any MCP server — browse tools, test requests, inspect messages. Essential for development and troubleshooting.

Best for: MCP server developers and users.

Core Features

1. Server Connection

Supports both stdio and SSE transports.

2. Tool Browser

View all tool names, descriptions, and parameter schemas.

3. Interactive Testing

Fill parameters, execute tools, see full request/response.

FAQ

Q: Need to install anything? A: No — runs directly with npx.

Q: Works with any MCP server? A: Yes — supports both stdio and SSE.