Stop Your AI Agent Before It Breaks Production — Pre-action gates for AI coding agents

gist_content.md

Stop Your AI Agent Before It Breaks Production

The Problem

AI coding agents (Claude Code, Cursor, Codex) make the same categories of mistakes:

1. Editing files outside task scope — agent "helpfully" refactors a file you didn't ask it to touch
2. Hallucinating function signatures — calls a function with wrong params, breaks the build
3. Making unauthorized changes — modifies config files, env vars, or deployment scripts without confirmation
4. Ignoring instructions — skips test files, deletes comments, reformats code you told it not to touch

The current "fix" is post-hoc: review the diff, catch the mistake, revert. But by then, if it was a force-push or a deploy, the damage is done.

The Pattern: Pre-Action Gates

Instead of reviewing failures after they happen, intercept the tool call before it executes:

function preEditGate(filePath, editContent, taskContext) {
  if (!taskContext.allowedPaths.some(p => filePath.startsWith(p))) {
    return { allowed: false, reason: `${filePath} is outside authorized scope` };
  }
  if (PROTECTED_PATTERNS.some(p => filePath.match(p))) {
    return { allowed: false, reason: `${filePath} is protected` };
  }
  return { allowed: true };
}

Feedback Learning

When you thumbs-down a bad output, capture the file path, model output, your correction, and failure pattern. Auto-promote repeated patterns into prevention rules. After 3 identical failures, the gate blocks that action class automatically.

Try ThumbGate

npx thumbgate

• Free tier: 2 feedback captures/day, 3 auto-promoted rules
• Pro: $19/mo — unlimited rules, team sharing, audit trail
• 862 weekly NPM installs

GitHub: https://github.com/IgorGanapolsky/ThumbGate Docs: https://thumbgate.ai

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