Your AI bill is high. One rule is probably causing most of it.

Most organisations assume the token bill grows because the business is growing. Sometimes it does. But the bigger driver is almost always a missing or poorly written governance rule causing agents to loop, retry, hallucinate and over-provision.

One bad rule can trigger thousands of wasted steps. The spend looks like a usage problem. It is a governance problem.

Every cost dashboard on the market tells you the total bill. None of them tell you which governance rule caused it. Headlights reads your agent execution traces, detects the waste patterns, names the rule behind each one and puts a dollar figure on it.

Not your agents cost $4,200 this month. The answer is your missing circuit breaker rule cost $2,052. Fix that first.

Here is an example. This is exactly what you get when you run your own traces below.

The entire analysis runs in JavaScript on your machine. Nothing is sent to a server. Nothing is stored. Paste your traces, run the analysis, close the tab. Gone.

For critical infrastructure and regulated environments this matters. Your agent logs contain operational reasoning that is not for sharing. This tool is designed so you never have to.