modelcontextprotocol/inspector

Score: 75.3 Rank #9

Visual testing tool for MCP servers

Overview

modelcontextprotocol/inspector is a TypeScript MCP server. Visual testing tool for MCP servers

Ranked #9 out of 25632 indexed tools.

In the top 1% of all indexed tools.

Has 9,041 GitHub stars.

Used by 912 other projects.

Has 137 contributors.

Actively maintained with commits in the last week.

Ecosystem

TypeScript NOASSERTION 505 weekly downloads

Signal Breakdown

Stars 9,041

Freshness 4d ago

Issue Health 67%

Contributors 137

Dependents 912

Forks 1,210

Description Brief

License NOASSERTION

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Details

Stars: 9,041
Forks: 1,210
Open Issues: 196
Closed Issues: 400
Contributors: 137
Dependents: 912
Language: TypeScript
License: NOASSERTION
Last Commit: 4d ago

Matched Queries

"mcp server""mcp-server"

From the README

# MCP Inspector

The MCP inspector is a developer tool for testing and debugging MCP servers.

## Architecture Overview

The MCP Inspector consists of two main components that work together:

- **MCP Inspector Client (MCPI)**: A React-based web UI that provides an interactive interface for testing and debugging MCP servers
- **MCP Proxy (MCPP)**: A Node.js server that acts as a protocol bridge, connecting the web UI to MCP servers via various transport methods (stdio, SSE, streamable-http)

Note that the proxy is not a network proxy for intercepting traffic. Instead, it functions as both an MCP client (connecting to your MCP server) and an HTTP server (serving the web UI), enabling browser-based interaction with MCP servers that use different transport protocols.

## Running the Inspector

### Requirements

- Node.js: ^22.7.5

### Quick Start (UI mode)

To get up and running right away with the UI, just execute the following:

```bash
npx @modelcontextprotocol/inspector
```

The server

Read full README on GitHub →

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