Pre-action gates that block AI agents from repeating known mistakes.
Pre-action gates that block AI agents from repeating known mistakes.
ThumbGate is the local-first Pre-Action Checks engine for AI coding agents. It runs in the PreToolUse hook on your machine: it evaluates a proposed tool call and logs the decision before tool execution. It hard-blocks detected secret leaks and two direct self-disable command classes by default — commands that terminate the ThumbGate gate process or enable its bypass environment override. Other high-risk classes, including destructive deletes (rm -rf), force-push, fetch-and-run, direct guardrail-file edits, off-scope edits, and deploys, warn and log by default. Set THUMBGATE_STRICT_ENFORCEMENT=1 to
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{
"mcpServers": {
"thumbgate": {
"command": "npx",
"args": ["-y", "thumbgate"],
"env": {
"THUMBGATE_HUMAN_REVIEWER_ID": "your-value"
}
}
}
}Add to claude_desktop_config.json, then restart Claude Desktop.
| Variable | Description | Required |
|---|---|---|
| THUMBGATE_HUMAN_REVIEWER_ID | Configuration value read at startup. | Optional |
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