Global KYB via the official GLEIF registry. ?lei=<20-char LEI> returns legal name, entity + registration status, jurisdiction, address, next renewal and direct parent; ?name=&country= searches by name. The ISO 17442 checksum is verified locally, so a typo is a 400 with no network call. GLEIF down → 503, unbilled. Public CC0 data. Part of the EU compliance toolkit; enriches supplier-check.