Abuse prevention vs fraud detection vs identity verification
Abuse prevention, fraud detection, identity verification and bot detection answer different questions. Learn which one stops free trial abuse and multi-accounting in SaaS.
AbuseZero MCP server and CLI: protect benefits from your agent
Set up free trial and credit abuse protection from your AI coding agent with the AbuseZero MCP server, or from your terminal and CI with the AbuseZero CLI.
Add a trial and credit abuse check to your signup flow
Step-by-step guide to adding a free trial and signup credit abuse check to your signup flow with the AbuseZero Node.js SDK or REST API. One call returns allow or deny.
AI agents are claiming your free trials. Let the right ones in.
AI agents now sign up and claim free trials for real people. How to stop bots and scripted trial farming without blocking the AI agents your customers use.
The real cost of free trial abuse for SaaS and AI apps
Free trial abuse and signup credit abuse cost more than the credits themselves. Work out what repeat claims really cost your SaaS or AI app, with a free calculator.
Zero-wait free trials: run your abuse check in the background
Start free trials instantly and check for trial abuse in a background job. When to grant first, how to take a trial back on deny, and when not to.
Fail open or fail closed? What your abuse check should do when it can't answer
Fail open or fail closed? How to decide what your signup and trial abuse check does when it can't get an answer, with safe retries, idempotency keys and per-benefit choices.
Once per user or once every 90 days? Setting trial eligibility
How to set free trial eligibility rules in SaaS. One trial per customer, re-trials after 90 days, monthly free credits and daily limits, and how to enforce each one.
How to prevent free trial abuse, starting with the offer itself
How to prevent free trial abuse and signup credit abuse in SaaS. Compare free trials, $1 trials and credits, the common fixes, and the design choices that work.
Multi-accounting detection without blocking real users
Shared Wi-Fi isn't proof of a second account. How to detect multi-accounting and duplicate accounts in SaaS without false positives that turn real customers away.
$1 trial abuse: how to protect paid introductory offers
A $1 trial feels safe because there's a payment. It isn't. How to stop $1 trial abuse and repeat introductory discounts without adding friction at checkout.
Going viral on X? Protect your free tier before launch day
Launching your SaaS on X? A viral launch brings real users and a wave of duplicate accounts. How indie hackers protect free credits and trials before launch day.
How to stop free tier abuse on an API product
Developers rotate accounts and API keys to multiply your free tier. A playbook for stopping API free tier abuse without slowing down real developers.
How to stop free plan abuse in a freemium SaaS
Freemium works until one person runs ten free accounts. How to stop free plan abuse and multiple free accounts without making your free plan worse for real users.
Vibe coded your SaaS? Don't wake up to a $6,000 bill
AI coding agents made building a SaaS easy. They don't protect your free credits, trials or sign-ups unless you ask. How vibe coders stop abuse and surprise bills.
Why we built AbuseZero: an abuse prevention API for SaaS
Free trial abuse, multi-accounting and credit farming quietly drain SaaS margins. Here's why we built one API that stops repeat benefit claims, with rules you control.