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modelcontextprotocol/inspector

★ 11,273TypeScriptOther86

Deterministic testing tools for MCP servers

What it is

A developer tool for inspecting Model Context Protocol (MCP) servers. It ships as a single package, @modelcontextprotocol/inspector, that provides four ways to inspect a server: Web — a Vite + React + Mantine single-page app with a Node backend. CLI — a scriptable command-line client for automation, CI, and fast agent feedback loops. TUI — an interactive terminal UI built with Ink. mcpdo (experimental) — a connection CLI: connect once, then run many commands against the named connection through an implicit local daemon. See clients/mcpdo.

When to use it

Reach for inspector when you want Claude, Cursor or any MCP client to reach a new tool, API or data source — it's written in TypeScript and fits stacks tagged cli, debug, mcp, tool.

Category
MCP & Tool Use
Also in
CLI & Terminal
Stars
11,273
Forks
1,567
Last push
today
Created
2024-10-03
Open issues
22
Website
modelcontextprotocol.io/docs/2026-07-28/tools/inspector
#cli#debug#mcp#tool#tui#web#typescript

Quick start

$ git clone https://github.com/modelcontextprotocol/inspector.git

Hand it to your AI

Read https://ideas.asveas.com/r/modelcontextprotocol/inspector.md and help me add modelcontextprotocol/inspector to my project. Explain the setup steps for my stack and show the minimal code to get it working.
MCP & Tool UseMarkdown .mdOpen on GitHub ↵

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FAQ

What is inspector?

modelcontextprotocol/inspector is a MCP server on GitHub: Deterministic testing tools for MCP servers A developer tool for inspecting Model Context Protocol (MCP) servers.

When should I use inspector?

Reach for inspector when you want Claude, Cursor or any MCP client to reach a new tool, API or data source — it's written in TypeScript and fits stacks tagged cli, debug, mcp, tool.

What are the best alternatives to inspector?

Popular alternatives in MCP & Tool Use: upstash/context7 (64.6k★), punkpeye/awesome-mcp-servers (97.6k★), modelcontextprotocol/servers (91.9k★), PrefectHQ/fastmcp (28.4k★), modelcontextprotocol/python-sdk (24.8k★).

Is inspector actively maintained?

modelcontextprotocol/inspector looks very actively maintained: the last push was today (2026-11-11), with 11,273 stars and 22 open issues.

What license does inspector use?

modelcontextprotocol/inspector is published under the Other license. Check the repository's LICENSE file before commercial use.