Open-Source Lightweight Python Proxy to Intercept LLM Prompt Injections
remainingsame1 · reddit · 2026-08-02
A developer shared a lightweight, zero-cost Python proxy middleware built with FastAPI. The tool acts as an input firewall for Large Language Models (LLMs).
Its core functionality is to intercept prompt injection attacks locally and redact sensitive API keys before the user input reaches the AI model. The author is currently seeking feedback from the developer community building custom AI apps to improve future features.
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