MCP Failure Lab MCP Server

by cloudlabworks Your server? Claim it

local only

MCP Failure Lab runs on your own machine — the client starts it, so there is no endpoint to ping. Last commit 5 Nov 2026.

Deliberately faulty MCP server for testing how agent clients handle tool errors and disconnects.

—

Installs / week

not published

Stars

0 open issues

5 Nov 2026

Last commit

from GitHub

MIT

License

JavaScript

Nothing serious here today

Today is the operative word: we check MCP Failure Lab every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

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MCP Failure Lab — questions

Answers built from our own checks of this server.

Why is there no uptime for MCP Failure Lab?

MCP Failure Lab runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone.

Is MCP Failure Lab open source?

Yes — it is published under the MIT licence, written in JavaScript and 0 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.