gate.cat

gate.cat provides a crucial safeguard between your development agents and your system's shell. It acts as a deterministic, fail-closed veto system that inspects and refuses potentially destructive commands *before* they execute. Key features: • Pre-execution command inspection • Blocks irreversible shell actions (e.g., `rm -rf`, `DROP TABLE`, `terraform destroy`) • Open-source core, free forever • Deterministic deny-list (no probabilistic judgments) • Operates like a Claude Code hook, gated shell, or an OpenAI-API proxy This tool is designed for developers, engineering teams, and anyone utilizing programming agents who need to prevent accidental or erroneous system modifications. It mitigates the risk of runaway processes or confident mistakes leading to data loss or infrastructure teardown. gate.cat operates on a strict deny-list, ensuring consistent verdicts without the unpredictability of general-purpose models. It runs silently in the background, intercepting commands and providing immediate feedback if an unsafe action is detected. By implementing gate.cat, you maintain control and peace of mind, knowing that a critical layer of protection is in place. It's an essential addition to any development environment where integrity and safety are paramount.