Business-Seller Verification API for Marketplaces

Prometiam helps marketplaces verify business sellers at scale against every registry the API covers, catch brand-new shell entities before they list, and get alerted when a seller dissolves — all from one API with one key.

Marketplaces onboarding business sellers face trust-and-safety and regulatory duties. EU Platform-to-Business rules and DAC7 push platforms to collect and verify seller business identity, while fraud teams fight a steady stream of freshly-incorporated shell companies. The two hard signals — is this a real, active company, and is it suspiciously new or linked to known bad actors — live in company registries.

Why marketplaces pick Prometiam

Resolve and verify any EU + UK business seller by name or national ID with daily-fresh registry data.
New-entity detection: the founded_after filter surfaces companies incorporated after a date, flagging brand-new sellers for extra scrutiny.
Director-network analysis links sellers through shared officers to catch serial-incorporation and connected-account fraud.
Daily event feeds and watchlist webhooks fire on dissolution or insolvency (concurso / procedure collective). Company monitoring covers Spain, Ireland, Poland, Finland, Sweden, Belgium, Croatia and Denmark.
Six-source scored screening (beta; sanctions + US export-control) of sellers and their owners across EU, UN, OFAC, UK OFSI, French gels, and the US Consolidated Screening List / BIS Entity List.

Seller verification is typically 2–4 calls each. Public tiers scale to the Scale plan (1,000,000 calls) for high-throughput onboarding, no sales call. Prometiam verifies the business entity (KYB) and screens sanctions — it does not verify an individual seller's identity (KYC). Officers are held for Spain, France, the UK and Norway; the other countries are company records only.