Isartor, a Rust-based prompt firewall, blocks between 60-95% of large language model requests to protect against misuse

Isartor is an open-source prompt firewall written entirely in Rust for filtering LLM traffic

The tool successfully deflects 60-95% of potentially harmful or unwanted LLM requests

Project is available on GitHub at isartor-ai/Isartor for developers to implement security measures

Early-stage project with minimal community engagement on Hacker News (0 comments, 2 points at time of posting)