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gate.cat

gate.cat

Blocks rm -rf before your AI agent can run it

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Launched July 29, 2026
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About gate.cat

gate.cat is an innovative security tool designed to safeguard AI coding agents from executing destructive commands such as 'rm -rf', 'DROP TABLE', or 'terraform destroy'. It acts as a deterministic, fail-closed veto system that inspects outgoing tool calls at the boundary, preventing irreversible actions before they occur. Its versatile integrations include Claude Code hooks, gated shell environments, and OpenAI-API proxies, making it highly adaptable for various AI development workflows. What sets gate.cat apart is its thorough validation process, having replayed over a million real agent commands with zero misses, and its transparency through publishing bypass maps that demonstrate its security coverage. The tool is open source under the Apache 2.0 license and is free forever, making it accessible to developers and organizations seeking to enhance AI safety and control while maintaining flexibility in their automation processes.

Screenshots

gate.cat screenshot 1
gate.cat screenshot 2
gate.cat screenshot 3

Pros

  • ✓Robust veto mechanism that prevents dangerous commands from executing
  • ✓Open source with transparent security validation and bypass maps
  • ✓Easy integration with popular AI tools like Claude and OpenAI APIs
  • ✓Free forever, reducing barriers for adoption
  • ✓Deterministic and fail-closed design enhances safety

Cons

  • ✗May require configuration and tuning for specific workflows
  • ✗Limited to command filtering; does not prevent all types of malicious activity
  • ✗Potential false positives if not properly calibrated

Use Cases

1Securing AI code generation environments from executing destructive commands
2Preventing accidental data loss during AI-driven automation
3Enhancing safety controls in AI-powered DevOps pipelines
4Monitoring and vetoing harmful commands in sandboxed AI testing setups
5Implementing safety layers for AI assistants with shell access
6Auditing and replaying agent commands for security validation

Pricing

Gate.cat is open source and free forever, making it accessible without any direct cost. Its deployment and integration may incur operational costs depending on the environment and scale, but the tool itself does not require paid plans.

Quick Info

Category💻 Developer Tools
Upvotes0
Comments1
Launched7/29/2026

Topics

Open SourceDeveloper ToolsArtificial Intelligence

Makers

Bogumił Jankiewicz

Bogumił Jankiewicz

Alternatives

•OpenAI's Safety and Moderation tools
•AI safety frameworks like AI Guardrails
•Custom command filtering scripts
•Secure execution environments with sandboxing
•Other veto or command filtering tools for automation
View all gate.cat alternatives →

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