Stablecoin Security sells financial institutions a risk score through an API before a stablecoin payment settles, starting in North America with worldwide availability expected in 2027. Mastercard did not say how the score is produced, what it costs, or which chains it covers.
Mastercard launched a risk-scoring service for stablecoin payments at Money20/20 in Las Vegas on Monday, scoring a transfer before the money moves on-chain. The service, called Stablecoin Security, is delivered as an application programming interface and starts in North America, with commercial availability elsewhere expected in 2027.
Mastercard says the product combines its payment intelligence with blockchain analytics to flag fraud, scams, sanctions exposure and other financial-crime indicators across a payment's lifecycle. It examines the transaction's context, where the funds came from, exposure to restricted parties and scam indicators, then returns a risk score before the payment completes. The company describes the interface as platform-agnostic and meant to feed a bank's existing fraud, compliance and case management workflows.
What the announcement does not contain is how the score is produced, what the service costs, which stablecoins or blockchains it covers, or whether any bank has deployed it. Mastercard named two initial partners instead of a customer. Borderless.xyz, which gives financial institutions a single connection to licensed stablecoin providers in more than 113 countries and 72 currencies and routes each payment to a provider, is one. The other is Keyrails, which handles high-value cross-border trade payments, particularly in emerging markets. Both take part in Mastercard's Start Path program for blockchain and digital asset startups.
The case for scoring a payment at the moment it is initiated rests on how stablecoin transfers actually move. Mastercard cites a Bank for International Settlements working paper, Anatomy of stablecoin transactions, which it says examined 593 million stablecoin transfer events across 141 million Ethereum transactions in 2025 and found nearly 60 percent were complex, multi-step transactions rather than simple one-to-one payments. Where a transfer passes through several hops, the counterparty visible when a bank initiates a payment is not necessarily where the value settles, and that is the gap the service is pitched at.
Ann Johnson, Mastercard's executive vice president for security solutions, said stablecoins "are creating new possibilities for value exchange" and that the service gives "institutions a clearer view of risk to make more informed decisions." The release also carries statements from executives at Borderless.xyz, Keyrails and BVNK, the stablecoin infrastructure provider Mastercard bought in August.
That acquisition is the thread running through the company's recent stablecoin work. Visa was left shopping for a different stablecoin rail after losing BVNK, and Mastercard and BVNK launched a Global Money Platform together on October 15. Mastercard said it will use BVNK to widen Stablecoin Security's reach in 2027, but described no role for it in the product as it ships now.
Compliance duties are hardening around stablecoins from the issuer side as well. FinCEN and OFAC have proposed requiring permitted issuers under the GENIUS Act to run full anti-money-laundering programs and screen every transaction against the US sanctions list, with strict-liability penalties for failing to freeze sanctioned funds. That proposal binds issuers rather than the banks Mastercard is selling to.
Mastercard named Crypto Credential and Crypto Secure as capabilities that complement the new service. Beyond the North American start, the release sets no date for availability in any particular market, and no measure by which a bank could judge how well the scores perform.
