FREE: French company-name autocomplete: name → SIREN (max 5 results, no account, no key)

Up to 5 suggestions (total in listes_bornees) from the INSEE Sirene register (open data): siren, denomination, postcode, commune, NAF code and actif (null when the register states no status, never false by default). Companies and sole traders whose record is publicly diffusible; entities under partial diffusion are never suggested. Ranking puts an exact name match first, then large enterprises (INSEE category), then name similarity. Like every /v1 response this one is Ed25519-signed in the headers and verifiable offline, it simply carries no provenance block, and no match-confidence score: for those, and for typo tolerance, use GET /v1/recherche ($0.002).