Mainframe runs your whole auction house — consignment intake, catalog production, pre-bidding, title transfer, buyer's premium, and the wire-in alert that hits your phone before the gavel is down. 1,114,909 APIs. Built for your next event in days.
Start free →Consignor uploads VIN and photos, Mainframe pulls comps from Bring a Trailer and eBay Motors, auto-writes the lot description, and sends the contract for signature.
New bidder registers, ID verified, credit checked via Plaid, paddle assigned, preview-day tickets emailed — all without a front-desk line.
Winning bid captured, buyer's premium invoiced, wire confirmed, title paperwork generated, transport quote requested — seconds after the lot clears the block.