You'll be crosslisting automatically in under 10 minutes.
Visit the Chrome Web Store listing and click Add to Chrome. Accept the permissions prompt — these are required for the extension to interact with your Zipsale dashboard.
Once installed, you'll see the Crosslist Assist icon (⚡) in your Chrome toolbar. If you don't see it, click the puzzle piece icon in the toolbar and pin Crosslist Assist.
Crosslist Assist uses AI to read your listings and fill in the correct category, colour, and size. This requires your own Anthropic API key.
Click the Crosslist Assist icon in your toolbar. You'll see the login screen — paste your API key into the field and click Continue.
Your key is saved locally in your browser. You won't need to enter it again unless you remove the extension or click the swap icon to reset it.
Mapping rules let you customise how Crosslist Assist categorises, colours, and sizes your items. They override the AI for specific keywords in your descriptions.
Click the Mapping tab in the extension to see the rules editor. The default rules cover the most common scenarios, but you should add your own based on your stock.
If a keyword appears in a listing description, the category is set to your specified value instead of what the AI would choose.
Force specific colours for items with predictable palettes.
Force a specific size when certain phrases appear in the description.
Set how much to subtract from your Depop price when listing to Vinted. Default is £3. Adjust this in the Price subtab.
Click Save Settings when done. Rules take effect immediately on the next run.
Before going live, always run a test first. This fills in all the fields but saves without listing to Vinted — so you can check everything looks right.
The extension will reload your dashboard and start working through items automatically. A progress bar will appear in the top-right corner of the page showing how many items have been processed.
When it finishes, check a few items in Zipsale to confirm the category, colour, size and price all look correct.
Once you're happy with the test results, you're ready to list for real.
The extension will work through your queue and list each item to Vinted automatically. You'll see a completion summary when it's done showing how many were listed successfully.
Make sure you're on your Zipsale dashboard page (not an individual item page) when you click Start or Test. If items still aren't detected, try refreshing the dashboard before running.
Add a custom mapping rule. In the Mapping tab, add the keyword that appears in those items' descriptions and set the correct Vinted category. This will override the AI for any future items containing that keyword.
Crosslist Assist will detect this and pause the run automatically, showing a warning. Log back into Zipsale and restart the extension. Items already processed won't be affected.
Yes — log into whichever Zipsale account you want, open the dashboard, and run the extension. It works with any account you're currently logged into.
At 1,000–1,500 items per month, approximately £2–5. The $5 minimum top-up at console.anthropic.com will last most sellers several months.
Made by sellers, for sellers.