Typewise/mcp-chaos-rig

A local MCP server that breaks on demand. Test your client against auth failures, disappearing tools, flaky responses, and token expiry, all from a web UI.

45
/ 100
Emerging

This tool provides a local MCP (Message Control Protocol) server designed for developers building MCP client applications. It allows you to simulate various server failures and edge cases, such as authentication issues, disappearing tools, slow responses, and token expiry. Developers can feed their client application into this server and observe how their client handles these controlled disruptions via a web-based UI.

Available on npm.

Use this if you are a software developer building or maintaining an MCP client and need to robustly test its error handling, authentication flows, and resiliency to server-side instability.

Not ideal if you are looking for a production-ready MCP server or a tool for general network chaos engineering unrelated to MCP client development.

API-client-development fault-tolerance-testing API-integration-testing authentication-testing client-side-error-handling
Maintenance 13 / 25
Adoption 5 / 25
Maturity 20 / 25
Community 7 / 25

How are scores calculated?

Stars

10

Forks

1

Language

TypeScript

License

MIT

Category

testing

Last pushed

Mar 29, 2026

Commits (30d)

0

Dependencies

5

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