Portreeve

Portreeve is an abuse-screening API for SaaS products. Screen signups, trials, checkouts, and logins before an action commits, with allow, review, or block verdicts and clear reason codes. Linked identity history helps identify repeat abuse across changing email addresses, including trial abuse, fake signups, multi-accounting, AI credit farming, and card testing. Investigate activity with an identity graph and review queue. Integrate using the API, Node SDK, and webhooks. The free tier includes 1,000 events per month, and paid plans start at $19/month with usage-based overages. API docs: https://docs.portreeve.com