ffl:read · ffl:verify
FFL licensee data
Search the national ATF licensee listing by name, license number or distance from a ZIP code, and verify a license live against ATF eZ Check for transfer checkouts.
Endpoints →For developers
Data API
The same data service that powers our own point of sale and online checkout — available to licensees and firearms-industry software.
POST /v1/ffl/search
x-client-id: your-client
x-timestamp: 1790000000
x-signature: 3f9c…
{"zip": "76648", "radius_miles": 25}catalog:read
Distributor catalog
Products aggregated by UPC across multiple U.S. distributors, with per-distributor offers, stock, shipping restrictions, facets and an incremental change cursor.
Endpoints →catalog:read
Inventory & cost history
Stock and cost observations over time, apparent sell-through signals and cost-trend series per product and distributor.
Endpoints →Built for integration
Plain JSON over HTTPS, documented with OpenAPI 3.1 and designed to sit behind a checkout or a POS without ever blocking it.
Signed requests
authPer-client keys with scoped access and HMAC-SHA256 request signing.
Zero-downtime rotation
keysThe previous secret keeps working for 24 hours after a rotation.
Change cursors
syncSync only what changed since your last cursor; cursors never expire.
Degrade gracefully
resilienceTime out fast and fall back to cached answers — never block a sale on a lookup.
Request access
Access is by application. Tell us who you are, which data you need and your expected volume; we will reply with terms and issue credentials.