0sec Labs Open-Sources 0, an AI Security Harness With Web UI, CLI and MCP
Zurich-based 0sec Labs has released 0, an open-source AI security harness. It runs vulnerability investigations, code review, pentesting, reverse engineering and fix generation. Developers drive it from a local browser console, a headless CLI or an MCP server. The 0sec Labs open-source AI security harness is licensed MIT OR Apache-2.0 and ships as a research preview. TL;DR Wrapper: It is a software harness. Bring your own LLM from 14 listed providers. Runs on: Apple Silicon macOS, x
Get smart on it
An open-source AI security harness called 0 has been released to automate vulnerability investigations, code review, penetration testing, reverse engineering, and fix generation. The tool works as a control plane that connects to large language models from multiple providers rather than functioning as a model itself, and users can access it through a browser console, command-line interface, or as a server for coding agents. The harness runs on standard hardware without requiring a GPU and has demonstrated strong performance on security benchmarking tests, with self-reported scores of 97.9 percent on web security challenges. The tool is free to use under an open-source license, though users must provide their own API access to language model providers.
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