appfirewall-fastapi is an open-source middleware for FastAPI applications, providing origin-side abuse signal detection and security monitoring for apps deployed behind Cloudflare. It is part of the AppFirewall suite by Sireto.
appfirewall-fastapi sits in PulseGate's Security & compliance platforms category. It focuses on protecting FastAPI applications from abuse and attacks when deployed behind Cloudflare. appfirewall-fastapi is an open-source project aimed at fastAPI developers and backend engineers. The project is open source (Apache-2.0). appfirewall-fastapi is available on the web, the command line, and API, and it can be self-hosted.
It is developed by Sireto, and the product first shipped in 2026. Across PulseGate's embedding index, appfirewall-fastapi has few near neighbours, marking it as relatively distinct. Among its 4 catalogued features are abuse signal detection, fastAPI middleware, and cloudflare integration.
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