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Discussion on: 5 open source tools for AI agent governance in 2026

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Igor Ganapolsky

Great roundup. One tool worth adding to this landscape: ThumbGate (github.com/IgorGanapolsky/ThumbGate).

It fills a different niche than the tools listed here — it's specifically focused on pre-action gates for AI coding agents (Claude Code, Cursor, Copilot). Instead of auditing after the fact or validating outputs, it gates destructive operations before they execute.

The hard blocks vs soft steers distinction from your comparison table maps directly to our architecture: hard gates for file deletions and config overwrites, soft gates for less critical operations.

2,478 unique cloners in 14 days, MCP server included. Would be great to see it in the governance landscape comparison.