Test your payments before your customers do.
PAYTESTER is the payment testing platform that lets banks, credit unions, and processors validate every card transaction, integration, and release — without touching production or exposing cardholder data.
Built on 35 years running mission-critical payments for leading banks and credit unions across 13 countries.
Download the overview
Every failed transaction costs you a customer. Every delayed launch costs you market share.
New payment methods, networks, and channels are multiplying — and each one is another thing that can break in production. When a card is declined at checkout or an ATM times out, your members don’t blame the network. They blame you. Meanwhile, the pressure to ship new card products faster has never been higher.
Most institutions still test manually, or lean on a processor’s environment they don’t control. The result: slow releases, blind spots in coverage, and failures that only surface once real customers are hit.
A payments environment that's tested is a payments environment that's competitive.
PAYTESTER gives you a versatile, scalable, and independent testing environment for your entire payment ecosystem. Simulate and validate every integration — across ATM, POS, Visa, and Mastercard — before it ever reaches production. Run the tests that matter, get dynamic reports in minutes, and catch third-party failures and bottlenecks before your customers do.
Faster time to market.
Ship new channels, payment services, and card products faster by automating test execution and expanding coverage.
Higher quality, wider coverage.
Increase delivery speed while improving test coverage and reliability across every channel and network you support.
Total independence.
Take control of your own test environment and stop depending on third parties in your payment ecosystem.
Cost efficient
Eliminate the production failures and bottlenecks that turn into unplanned costs and emergency fixes.
Versatile & scalable.
Test any payment system, from any channel, at any transaction load — ready for today's volumes and tomorrow's.
Zero production risk.
PAYTESTER runs in test environments and never touches your system of record or live cardholder data.
One platform, every test you need:
Functional testing
catch defects and unexpected behavior early.
Regression testing.
confirm new changes don’t break existing functionality.
Load & performance testing.
validate expected traffic is handled without degradation.
Stress testing.
prove stability under peak and beyond-peak conditions.
Capacity testing.
measure the maximum users and transactions your platform sustains.
Reliability testing.
verify flawless operation in a controlled pre-production environment.
Channels & networks: ATM · POS · Visa · Mastercard, and more.
How it works
Point PAYTESTER at the system, channel, or integration you need to validate — no production access required.
Run functional, regression, load, stress, capacity, and reliability tests across your networks and channels.
Get dynamic reports in minutes, fix issues before release, and go to market faster.
WHY CLAI
CLAI Payments has spent 35 years building and operating the transactional platforms behind leading banks, retailers, and credit unions across Latin America — billions of transactions a year, in production, under real load. PAYTESTER is the same mission-critical discipline, packaged so your team can adopt it without touching your core.
