Newsletter
Join the Community
Subscribe to our newsletter for the latest news and updates
Julius is an open-source LLM service fingerprinting tool that identifies Ollama, vLLM, LiteLLM, and 30+ other AI services running on network endpoints.

Autonomous AI agent system for complex penetration testing, integrating security tools, long-term memory, and smart task delegation in sandboxed Docker.

Unified exposure management platform for automated vulnerability scanning, attack surface monitoring, and cloud security posture management.
Julius is an essential LLM service fingerprinting tool designed for security professionals. It accurately detects which AI server software is operating on network endpoints during penetration tests, attack surface discovery, and security assessments.
Unlike traditional model fingerprinting tools that identify the LLM generating text, Julius focuses on the server infrastructure. It quickly answers questions like: Is that endpoint running Ollama? vLLM? LiteLLM? Or a Hugging Face deployment?
During security assessments, discovering an open port often leads to the tedious task of manually identifying the underlying service. Different LLM services have unique API signatures, default ports, and response patterns, making manual identification slow and prone to errors. Julius automates this process by sending targeted HTTP probes and matching response signatures to precisely identify the running LLM service.