Identifier crosswalk · free · one receipt per call
Which official row printed these two identifiers together?
Give one official key or a registered name. Every line that comes back is two identifiers that one official row printed side by side — UEI ↔ CAGE ↔ legal name on the SAM.gov registration, CIK ↔ EIN as filed on EDGAR, NPI ↔ provider name at NPPES, UEI ↔ EIN on each Federal Audit Clearinghouse year, EIN ↔ legal name in IRS Pub 78, registry number ↔ registered name in a state file — with the row, the source, the link and the read date.
Nothing is inferred. Two rows that share a name are never joined; there is no match score, no "likely the same entity", no parent beyond the one SAM prints as the registrant's own declaration. If a source did not answer, it prints no edge and the receipt says so. What it does not do →
For analysts and integrators
GET /api/public/crosswalk?uei=… or ?name=…&cik=… returns the edges as JSON with the receipt id and hash; the same edges sit in the crosswalk block of every receipt built at /screening and through the partner API. It is a resolution layer only in the narrow sense: it tells you which official rows already join two keys. It cannot tell you that two differently keyed rows are the same organisation — nothing on this site will.