Reap has launched Reap Sentry, a managed card fraud and risk service for new card-issuing clients and existing clients at contract renewal. The service configures fraud rules, screens authorisations in real time, investigates alerts, processes chargebacks and reports confirmed fraud to Visa through a single Reap API. Reap says clients do not need additional monitoring tools or dedicated fraud specialists. Sentry is built on technology from Reap's card-issuing portfolio, which has issued millions of cards over eight years. Its controls are tailored to each program's cardholder segments, geographic footprint and stated risk appetite, and are updated as threats including BIN attacks and merchant breaches emerge. Reap will protect the authorisation layer it operates and observes, while clients remain responsible for cardholder relationships and first-party fraud entry points such as onboarding, identity verification and account access. Reap cited USD 33.41 billion in global card fraud losses in 2024 against USD 51.920 trillion in card volume, based on The Nilson Report's January 2026 figures. The company, which uses stablecoin-enabled infrastructure, said Sentry is available on its own API.