THUMBGATE
The same mistake. Twice. You paid for both.
Monday: your agent overwrites a config file without checking it exists. Thursday: fresh session, same mistake.
Monday · 2:14pm

    

    

      

      
Thursday · 10:03am

      

    

  

  
Same failure. Different session. You paid for both retries.







  
THUMBGATE

  
One thumbs-down → a Pre-Action Check.

  
ThumbGate extracts the pattern behind your correction and installs a small rule that fires before the next call leaves your machine.

  

    

    
thumbgate · capture

    

  







  
THUMBGATE

  
Watch the gate fire.

  
Next session, the agent drafts the same bad call. The gate intercepts it before the round-trip to the model — zero tokens spent.

  

    

    
claude-code · session #47

    

    

      
⛔ Pre-Action Check matched

      
toolWrite

      
patternoverwrite + no-existence-check

      
confidence0.91

      
sourceyour 👎 on Monday 2:14pm

      
cost saved~4,200 input + ~12,000 retry tokens

    

  







  
THUMBGATE

  
Your team's shared memory, compounding.

  
Every block is logged with pattern, confidence, and tokens saved. Quiet gates retire. Productive gates stay.

  

    

      
Lessons learned this week

      
7

    

    

      
Gates active

      
3

    

    

      
Tokens saved

      
42,700

    

  

  

    

      
Rule
Fired
Confidence
Saved

    

    

      
destructive-write-no-existence-check

      
4×

      
0.91

      
~16,800 tok

    

    

      
missing-error-boundary-in-react-route

      
2×

      
0.83

      
~6,400 tok

    

    

      
pnpm-install-without-frozen-lockfile

      
3×

      
0.88

      
~9,100 tok

    

  

  
Local-first · SQLite on disk · nothing leaves your machine







  
THUMBGATE

  

    
$npx thumbgate init

    

      
✓Registered with Claude Code · Cursor · Codex · Gemini

      
✓PreToolUse hook installed

      
✓Ready — thumbs-down anything you don't want repeated

    

    
thumbgate.dev · free to try