MCP Inspector

Official visual tool to test and debug MCP servers: call tools, read resources, try prompts.

Agent, MCP and tool libraries npm Apache-2.0 AND MIT

License: Apache-2.0 AND MITThe MCP project is moving from MIT to Apache-2.0: new code is Apache-2.0, older contributions not yet relicensed stay MIT (LICENSE file).

Used in agent projects

0.8% of 4,818 JS/TS repos built with AI coding agents

Gid Score

51 /100

#1392 of 3,794 tools, #63 in agent, mcp and tool libraries · ranking

Rank in agent, mcp and tool libraries

#9 of 155

by use in those projects

Downloads

256K

npm, last 7 days, @modelcontextprotocol/inspector

GitHub stars

11.1K

1,652 forks · last push Oct 20, 2026

How MCP Inspector is used

MCP Inspector is a dependency in 37 of the 6,208 public GitHub projects set up for AI coding agents that we scanned (0.8% of the 4,818 JavaScript/TypeScript ones), #9 of 155 in agent, mcp and tool libraries. Projects that use it most often also use Model Context Protocol SDK (JavaScript) (83.8%), tsx (59.5%), Zod (75.7%).

MCP Inspector popularity over time

Top tools by Gid Score

MCP Inspector: downloads per weeknpm, @modelcontextprotocol/inspector 256,051

MCP Inspector: GitHub starsmodelcontextprotocol/inspector 11,107

Gid Score 51: downloads 51, use in agent projects 39, GitHub stars 52, downloads trend 70 (each 0-100). How it is calculated.

Often used with MCP Inspector

Model Context Protocol SDK (JavaScript)	83.8% of MCP Inspector projects · 8.8× more than average
tsx	59.5% of MCP Inspector projects · 3.9× more than average
Zod	75.7% of MCP Inspector projects · 3.0× more than average
TypeScript	89.2% of MCP Inspector projects · 1.6× more than average
dotenv	40.5% of MCP Inspector projects · 2.6× more than average
Vitest	45.9% of MCP Inspector projects · 2.2× more than average
Express	24.3% of MCP Inspector projects · 3.6× more than average
rimraf	16.2% of MCP Inspector projects · 6.4× more than average

By coding agent

GitHub Copilot	0.8% of projects set up for it
Claude Code	0.4% of projects set up for it
Cursor	0.5% of projects set up for it
OpenAI Codex	1.1% of projects set up for it

Share of public repos configured for each agent that list MCP Inspector as a dependency.

Install

Package	`npm install @modelcontextprotocol/inspector`
Main stacks	TypeScript / JavaScript (33), Python (3), Java / Kotlin (1)
Example projects	Doist/todoist-mcp, adeze/raindrop-mcp, awslabs/nx-plugin-for-aws, syyuan14/sh-disney-mcp, PaystackOSS/paystack-mcp-server

Alternatives to MCP Inspector

All agent, mcp and tool libraries

In our scan, none of the most used tools in Agent, MCP and tool libraries does the same job as MCP Inspector: they are add-ons, companions or tools for a different task.

More in Agent, MCP and tool libraries: Model Context Protocol SDK (JavaScript) Model Context Protocol SDK (Python) FastMCP (Python) LangChain LangGraph LangChain.js Mastra Agent Client Protocol SDK

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