Original Summary

We run Treg, an API marketplace. Every new account gets $1 of credit, and since we pass vendor prices straight through, every cent of it is a real vendor bill. Fine for the first couple of months, at 50 to 110 signups a day. Then one week it was 780 a day, then 2,385, with 656 accounts landing in a single hour. About 9,900 signups in ten days, where a normal ten days for us is under a thousand, and the vendor bills followed. You could see the two scripts behind them in the account names. One made Spanish word pairs with four digits, loma-norte-2570, delta-firme-5580. The other made a two-letter prefix and seven random characters, cf-oxvfjvs. Every farmed account came with a dollar of vendor calls we had already promised to pay for. We tried rules first. They rotated domains faster than any rule we wrote could follow. We ended up banning 4,944 of them. Then we built the thing that should have been there already. A job runs every 15 to 30 minutes. It pulls new signups with their usage so far and verifies the email. Burners die right there for about $0.002. Then it enriches the person and the domain with the same endpoints we sell, which I find funny. The scoring runs on Jev, a small decision model from TypeSafe. It only outputs probabilities and can't write a sentence, which is the reason I'm comfortable letting it ban on its own. It returns a fraud score and a bucket: fraud, normal, or a company worth a human email. Above a cutoff we ban and freeze the credit, and no, I'm not posting the number. The uncertain ones go to a Slack channel for a person to look at. A normal day now is a few hundred signups. The whole pass costs about half a cent a signup and takes 2.4 seconds. What it doesn't fix. It runs after signup, so the first calls still happen. The cutoff came from a small labelled set and some nudging. Real devs on a personal gmail get flagged more than I'd like. Anyone gating free credits behind a card instead? Did it kill your signups, or just the fake ones?   submitted by   /u/Pleasant_Winner_3644 [link]   [comments]

  • 情报分类：工作与职业机会
  • 分类依据：内容涉及招聘、求职或职业发展
  • 信息来源：Reddit · SaaS
  • 发布时间：2026/10/6 14:06:24