Evolution Foundation Models

Cloud.ru Open-Sources Guardrails Filter Reverse Proxy to Prevent Sensitive Data Leaks When Using Any LLM

Cloud.ru has released the source code of Guardrails Filter as an open-source project. The tool functions as a transparent reverse proxy positioned between clients and LLM providers. It automatically strips sensitive data such as names, addresses, phone numbers, INN identifiers, passport details, bank account information, and API keys from user prompts before they reach any language model. The original data is then restored in the model's responses. The solution was initially developed for Cloud.ru's Evolution Foundation Models platform to ensure customer data never leaves the company's infrastructure. It particularly addresses strict requirements from banks, insurers, and e-commerce companies that demand data remain inside their own perimeters rather than entering any public cloud environment.