MCP Failure Lab is an open-source TypeScript toolkit designed to test the resilience of MCP clients and related systems by simulating various failure conditions. The toolkit provides deterministic tools for introducing delays, hangs, and disconnections, allowing developers to test how their systems handle these scenarios beyond the typical successful execution path. It includes a CLI, an MCP server, a scenario runner with assertions, and various tests, aiming to ensure clients properly enforce timeouts, cancel work, clean up resources, and recover from interruptions. AI
IMPACT Enhances the reliability and robustness of systems that integrate with MCP, crucial for production environments.
RANK_REASON This is a new open-source developer tool release.
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