Connect eBay, Poshmark, Mercari and other marketplaces

Go to Settings → Marketplaces, click Add marketplace and choose the marketplace under Connect new. eBay, Amazon, Shopify, Walmart and WooCommerce connect through their official sign-in pages. Poshmark, Mercari, Whatnot, Facebook Marketplace and Etsy connect by logging in once inside the Treecat desktop app. A payment method must be added first.

Before you startCopy Anchor Link

• Add a payment method (with ZIP code) in Settings → Billing. Treecat needs one before it can talk to your marketplaces. You are still only charged when a billable item sells. See Billing, payment methods and promo codes.
• For Poshmark, Mercari, Whatnot, Facebook Marketplace and Etsy, install the Treecat agent and make sure it is online. See Install the Treecat agent.
• Be an active seller on the marketplace. If you have never listed there, create one listing directly on the marketplace first, so its seller settings (payments, shipping, verification) are in place.

Connect a marketplaceCopy Anchor Link

1. Go to Settings → Marketplaces and click Add marketplace.
2. Choose the marketplace under Connect new. (Marketplaces you already use appear under Add another account.)
3. Follow the sign-in for that marketplace (see the table below).
4. When the account shows as connected, go to the Inventory page and run an import.

How each marketplace connectsCopy Anchor Link

WooCommerce stores then appear in their own WooCommerce section on Settings → Marketplaces, with Reconnect and Disconnect for each store.

After the first login you can use Treecat from any computer or phone. You only log in again when the marketplace session expires; see Reconnect a marketplace.

If the login gets stuckCopy Anchor Link

1. If nothing appears, click Open app again in the Connect dialog.
2. If the app is not responding, quit it completely from the menu-bar or tray icon, reopen it, and try again. If that does not help, reinstall the app.
3. If the marketplace shows a block or captcha, wait a few minutes and try again. Repeated attempts can extend the block.
4. Check Settings → Events to see where the login stopped.

Common messages in the Connect dialog:

• "The platform blocked this login attempt." Wait a few minutes before trying again.
• "Your Treecat app doesn't support connecting this platform yet." Update the agent and try again.
• "The browser engine on your computer updated in the background." Quit and reopen the Treecat agent, then try again.
• "You logged in, but saving the account to Treecat failed." Try again; if it keeps happening, contact Treecat support.

If a connection keeps failing, confirm that you can create a listing manually on that marketplace.

More than one account per marketplaceCopy Anchor Link

You can connect several accounts on the same marketplace. Use Add marketplace → Add another account. Each account appears as its own row where you can set the default account, change its settings, pause syncing, or delete it. See Manage marketplace accounts, and Move listings between accounts.

Frequently asked questionsCopy Anchor Link

Does Treecat store my marketplace passwords?Copy Anchor Link

No. You log in on the marketplace itself, and Treecat keeps only the resulting login session for that marketplace.

Why does Treecat ask me to reconnect?Copy Anchor Link

Marketplace logins expire every few months. Treecat shows a Reconnect banner and emails you. Reconnect from Settings → Marketplaces. See Reconnect a marketplace.

Which marketplaces does Treecat support?Copy Anchor Link

eBay, Poshmark, Mercari, Whatnot, Amazon, Etsy, Shopify, Facebook Marketplace, Walmart and WooCommerce, for US-based stores.

Why can't I add eBay Canada, the UK or another country?Copy Anchor Link

Treecat supports US marketplaces only. You can manage a US account from anywhere in the world.