Tool mocking framework for AI agent testing
In the Testing & QA space, stuntdouble takes a focused approach. It focuses on testing AI agents reliably without needing real external tools or APIs. It is built as an open-source project for AI developers. stuntdouble is open source under the MIT license. stuntdouble is available on the web and the command line, and it can be self-hosted.
It is developed by Intuit, and the product first shipped in 2026. Development happens publicly on GitHub with 13 stars and 57 commits in the last 90 days. PulseGate's similarity index finds few close equivalents — stuntdouble occupies a relatively distinct niche. Key capabilities include agent mocking, test automation, and python integration.
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