ThumbGate

Pre-action checks that stop AI agents from repeating mistakes

ThumbGate sits in front of coding-agent tool calls and blocks risky repeats before they run. It turns thumbs-up and thumbs-down feedback into reusable rules, with local use for individuals and paid options for dashboards, sync, and team visibility.

Agenticness = how independently a tool can take action, scored across 9 dimensions. Scored independently by David Kooi, Skylark Creations — see full rubric →

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Chrome Extension

Code Execution

Integrations

Memory

B2B

MCP Support

Copilot (Human-in-Loop)

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About

What It Is

ThumbGate is an agent-governance and safety layer for AI coding workflows. It is built for developers, solo operators, consultancies, and platform teams using tools like Claude Code, Cursor, Codex, Gemini CLI, and MCP-compatible tools. Rather than...

What To Know

ThumbGate is most useful when the same agent mistake keeps happening and you want a guardrail at execution time, not just a better chat UI. The content emphasizes repeated-failure blocking, audit trails, and prevention rules created from feedback....

Key Features

Intercepts the next AI tool call before execution

Converts thumbs-down feedback into prevention rules

Blocks repeated failures across supported coding agents

Provides local-first CLI setup via `npx thumbgate init`

Works with local hook or MCP-compatible installation paths

Use Cases

Preventing repeated bad shell commands from running again in a coding agent workflow

Blocking risky actions such as force-pushes, destructive file changes, or unsafe permission changes

Adding guardrails to human-in-the-loop developer workflows on a laptop or repo

Agenticness: Guided Assistant

Executes tasks you assign, one step at a time, within narrow domains.

High evidence

Last evaluated: Jul 2, 2026

Dimension Breakdown

Action Capability

Autonomy

Adaptation

State & Memory

Safety

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Chrome Extension

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