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 multi-country 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 every live country except France and Chile.
Scored sanctions and US export-control screening (beta) of sellers and their owners across EU, UN, OFAC, UK, Australia (DFAT), French gels, national lists, and the US Consolidated Screening List / BIS Entity List.

Seller verification typically costs 2–7 credits each. Public tiers scale to the Scale plan (50,000 credits) 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, Norway, Poland and the Czech Republic (Polish natural persons are masked by the register itself; Czech natural persons are the name and the month and year of birth only); the other countries are company records only.