Support

Email us at support@knowfirm.com. We read every message; there is no ticket form and no published response SLA.

The account email you sign in with
API key prefix (the visible kf_live_… / kf_test_… stub — never the full secret)
X-Request-Id / request_id from the failing response, if any

KYB / firmographic data only — not a consumer report (FCRA); not for credit, employment, insurance, or housing decisions. See the Terms.