Three steps. No upload, no copy-paste.
CarMargin works inside your browser, in your authenticated Copart UK session. Every lot you open is analysed in place — no separate dashboard to babysit.
Install the extension.
One click from the Chrome Web Store. Sign in with your email or Google. Done — no setup, no API keys, no credit card.
Chrome 116 or newer. Works on Windows, macOS, Linux, and Chromebook.
Browse Copart UK normally.
CarMargin is invisible until you're on a Copart UK page. Then:
- List rows get inline BUY / MAYBE / SKIP badges with the recommended max bid.
- Lot detail pages get a sticky panel with the analysis and a chat sidebar pinned to the right.
- Watchlist lots can be opportunistically pre-warmed in hidden tabs while you're on Copart so the analysis is ready when you click through.
CarMargin only reads what your authenticated Copart session already shows you. It doesn't fetch anything Copart wouldn't already serve to your browser.
Bid with confidence.
Open any lot. The analysis is there. Read the verdict, scan the damage signals, check the MOT, look at the repair plan. Ask the chat anything that's still unclear. Set your bid.
The recommended max bid is tuned to your target ROI, transport budget, and shop rate — not a generic number. Change a setting and the maths re-runs instantly without a new AI call.
What CarMargin doesn't do.
A short, deliberate list:
- No browse, search, or list across cached lots. CarMargin isn't a Copart mirror or a marketplace. Each lot is analysed only when you open it.
- No image storage. Photos pass through to the AI in memory and are discarded. The image bytes never live in any database.
- No bidding-history harvesting. Your previous bids stay between you and Copart.
- No US auction houses. UK Copart only. IAA, Manheim, ADESA, BCA — out of scope.