free · open source · runs on your machine
Does your AI agent get worse as its context fills?
contextrot reads your agent's logs and tells you.
01Everything your agent sees goes in here.
01Files. Messages. Tools.
It fills.
01Past 60%, they say,
it starts to rot.
02
So we counted
every slip.
scroll →
At every fill level.
03We checked
31,991 real steps.
No rot.
Filling the window wasn't the problem.
04
So what was?
← scroll
1.6×
late nights
4.5×
which agent CLI*
8.5×
which model*
1.0×
mistakes piling up
no effect
1.0×
long solo runs
no effect
Yours will be
different.
* different tasks · association, not causation
Find out in seconds.
click to copy · Python 3.9+ · MIT · zero network calls
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