mcp-server-tester

by gleanwork · Developer Tools · ★ 19

mcp-server-tester is an MCP server by gleanwork. Playwright-based testing and eval framework for MCP servers with LLM-as-a-judge. It has 19 GitHub stars and ranks #1294 of 2217 in Developer Tools by stars.

Category: Developer Tools
Author: gleanwork
GitHub stars: 19
This week: Tracking since 18 Oct 2026
Weekly downloads: 692
Language: TypeScript
License: MIT (open source)
Last update: 2026-10-23 (yesterday)
Links: Source npm

How to install mcp-server-tester

mcp-server-tester is published on npm as @gleanwork/mcp-server-tester, and it depends on @modelcontextprotocol/sdk. These steps assume it runs as a local stdio server, which is the usual setup.

Check the README. Confirm the start command and note any API keys or environment variables it needs (pass them with -e KEY=value or an env block). You need Node.js for npx.

Add it to Claude Code from a terminal:

claude mcp add mcp-server-tester -- npx -y @gleanwork/mcp-server-tester

Or add it to Cursor or Claude Desktop in .cursor/mcp.json or claude_desktop_config.json:

{
  "mcpServers": {
    "mcp-server-tester": {
      "command": "npx",
      "args": [
        "-y",
        "@gleanwork/mcp-server-tester"
      ]
    }
  }
}

Restart the client and check it. Run claude mcp list, or open the client's MCP settings, and confirm mcp-server-tester and its tools are listed. The install guide covers VS Code and Codex.

Also listed in

MCP servers for Playwright193

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Frequently asked questions

What is mcp-server-tester?

mcp-server-tester is an MCP server by gleanwork in the Developer Tools category. Playwright-based testing and eval framework for MCP servers with LLM-as-a-judge. It has 19 GitHub stars and ranks #1294 of 2217 in Developer Tools by stars. It is written in TypeScript. It is licensed under MIT. It was last updated yesterday.

Is mcp-server-tester free and open source?

Yes. mcp-server-tester is published under the MIT license, so you can run, modify and self-host it at no cost. If it connects to a paid service, that service's own pricing and API terms still apply. Check the repository for the exact license text before using it commercially.

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