Lightweight load-testing API and CLI built around FastAPI, k6, and decorator-based target registration.
LoaderUp is a Developer Tools product. It focuses on simplifying load and performance testing for APIs and applications using a lightweight CLI and API. LoaderUp is an open-source project aimed at developers. The project is open source (MIT). The product ships for the web, the command line, and API.
It is developed by MahdiHaroun, and the product first shipped in 2026. Across PulseGate's embedding index, LoaderUp has few near neighbours, marking it as relatively distinct. Among its 5 catalogued features are load testing, API testing, and CLI interface.
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