Merchant KYB & Sanctions API for Payment Providers

Prometiam is a company-data and sanctions layer for payment service providers and acquirers who underwrite merchants at volume and then carry that risk for the life of the relationship. Verify and continuously monitor merchants across Spain, France, the UK, Ireland, Poland, and Norway from one API — registry verification, beneficial ownership, and sanctions screening — with webhooks when a merchant changes.

Why PSPs pick Prometiam

Pricing

Onboarding a merchant runs roughly 4–6 calls. A PSP onboarding 2,000 merchants a month plus daily monitoring sits inside the Professional tier (€29.99/mo, 100,000 calls); high-volume acquirers scale to €99.99/mo (1,000,000 calls). Watchlist webhooks and sanctions screening are included from Professional up. Free tier and public pricing.

Prometiam pairs with your identity/document-verification and transaction-monitoring stack rather than replacing them.

Read more · Get a free API key