The problem
If you run a website, AI crawlers are hitting it
constantly. GPTBot, ClaudeBot, Bytespider, CCBot —
they scrape your content 24/7 for training data and
search indexing. You pay the bandwidth bill. They
get your content for free.
The frustrating part is most developers have no idea
how much of their server bill is pure bot waste until
they actually look at their logs.
What I built
BotCost.dev is a free browser-based log analyzer.
You drag and drop your server log file and it shows
you exactly:
- Which AI bots are hitting your site
- How many requests each one made
- How much bandwidth each one consumed
- Estimated monthly cost in dollars
- A ready-to-paste Cloudflare WAF rule or Nginx config to block them
The privacy part
Everything runs in your browser. Your log file never
leaves your device. We have no server that receives
it. You can verify this yourself by opening your
browser Network tab while running an analysis — you
will see zero upload requests.
Supports Nginx, Apache, Cloudflare CSV export, and
Vercel JSON logs.
Try it
botcost.dev — free, no account required.
Would love feedback from anyone who tries it on real
logs. Curious what bot percentages people are seeing
in the wild.
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