# Treecat Help > How to use Treecat: crosslisting, automatic delisting, the Treecat agent, marketplaces, billing and troubleshooting. Treecat is a crosslisting and inventory service for resellers on eBay, Poshmark, Mercari, Whatnot, Etsy, Facebook Marketplace, Shopify, Amazon and Walmart. Every article is also available as Markdown by adding `.md` to its URL. Support: support@treecat.io. ## Getting started - [What is Treecat?](https://wiki.treecat.io/what-is-treecat.md): Treecat is a crosslisting and inventory service for resellers: list once, sell on several US marketplaces, and delist everywhere when an item sells. - [Set up Treecat](https://wiki.treecat.io/set-up-treecat.md): The five steps to get started: sign in with Google, install the agent if you need it, connect your marketplaces, import, and match. - [Signing in and changing your login email](https://wiki.treecat.io/sign-in-and-login-email.md): Treecat signs you in with a Google account. Here is why, what to do if you sign in with a different one, and how to change your login email. ## The Treecat agent - [What is the Treecat agent, is it safe, and does my computer need to stay on?](https://wiki.treecat.io/treecat-agent-computer-on-24-7.md): The Treecat agent is a desktop app that runs your marketplace automations from your own computer. What it does, what it can access, and why it must stay on. - [Install the Treecat agent on Windows, Mac or Linux](https://wiki.treecat.io/install-the-treecat-agent.md): Step by step: download the Treecat desktop agent from Settings → Agent, install it, sign in, and keep it online. Plus fixes for blocked Windows downloads. - [Turn on virtualization for the Treecat agent](https://wiki.treecat.io/turn-on-virtualization.md): The Treecat agent needs virtualization. Most PCs have it on and the app can enable the rest; here is how to switch it on in the BIOS when needed. - [The Treecat agent keeps going offline](https://wiki.treecat.io/agent-offline.md): What to check when the Treecat agent shows offline: the agent window, sleep settings, sign out or reset, updates, and what to send Treecat support. ## Connecting marketplaces - [Connect eBay, Poshmark, Mercari and other marketplaces](https://wiki.treecat.io/connect-your-marketplaces.md): How to connect each marketplace to Treecat from Settings → Marketplaces, what you need first, and what to do when a login gets stuck. - [Reconnect a marketplace that shows as disconnected](https://wiki.treecat.io/reconnect-a-marketplace.md): Marketplace logins expire every few months. How to reconnect from Settings → Marketplaces, and what to do when a marketplace blocks or flags the login. - [Manage marketplace accounts and connect more than one per marketplace](https://wiki.treecat.io/manage-marketplace-accounts.md): Connect several accounts on one marketplace, pick the default, rename them, refresh eBay policies, and pause syncing from Settings → Marketplaces. - [Move listings to another account on the same marketplace](https://wiki.treecat.io/move-listings-between-accounts.md): Use Move to take a listing down on one account and put it up on another account of the same marketplace, or restore listings from an account you no longer use. ## Inventory, import and matching - [Import your listings and sales](https://wiki.treecat.io/import-listings-and-sales.md): How to import listings and sales into Treecat, which import mode to choose, how often Treecat syncs on its own, and what cannot be imported. - [Find items with inventory filters](https://wiki.treecat.io/find-items-with-filters.md): Use the filters on Inventory → Products to find exactly the items you need, such as everything listed on eBay but not on Mercari, and save them as presets. - [What the colored rings and "unsynced" mean](https://wiki.treecat.io/listing-status-colors.md): The ring around each marketplace icon shows the listing's status. What each color means, what unsynced is, and how to push unsaved edits to a live listing. - [Link existing listings across marketplaces with Matching](https://wiki.treecat.io/match-listings-across-marketplaces.md): Already listed on several marketplaces? Import everything, then use Inventory → Matching to link the same item so a sale on one delists the others. - [Fix duplicate items](https://wiki.treecat.io/fix-duplicates.md): Duplicates are two or more Treecat items for the same live listing. How they happen, and how Inventory → Fix Duplicates delists and deletes the extras. - [Archive or delete items, and clean up old inventory](https://wiki.treecat.io/archive-and-delete.md): Archive keeps an item and its history but hides it; Delete removes it from Treecat. When to use each, and how to clean up old sold and ended items. ## Listing and crosslisting - [Run actions on many items at once](https://wiki.treecat.io/bulk-actions.md): Select items on Inventory → Products and use the action bar to list, update, delist, import, move, relist, copy or archive them in one go. - [Actions on the item page](https://wiki.treecat.io/item-page-actions.md): Open a product to work on that one item: choose the marketplace tab, then list, update, delist, import, match, relist, reprice or clear it from its action bar. - [Crosslist an item to another marketplace](https://wiki.treecat.io/crosslist-an-item.md): Use Autofill to copy a listing from one marketplace to another, review the form, save and click List. How many items you can crosslist at once, and templates. - [Create listings from photos with Image Autofill](https://wiki.treecat.io/ai-listing-from-photos.md): Drop product photos into Inventory → Image Autofill and Treecat's AI groups them into products and writes the listings for you to review and list. - [Edit many listings at once with Bulk Edit](https://wiki.treecat.io/bulk-edit.md): Select items, open ⋯ → Bulk Edit, set the fields you want for one marketplace, then run Update to push the changes to the live listings. - [eBay auctions, promotions, business policies and store categories](https://wiki.treecat.io/ebay-listing-features.md): Treecat supports eBay auctions, promotions, handling fees, business policies and custom store categories. How to use each, and eBay's photo size rule. - [Schedule listings and reprice automatically](https://wiki.treecat.io/scheduled-listing-and-repricing.md): List items on a future date or spread a batch over several dates, and change prices now, on a date or on a repeating schedule with a stop price. ## Sales and automatic delisting - [How fast does Treecat delist an item after it sells?](https://wiki.treecat.io/how-fast-does-auto-delist-work.md): Treecat checks every connected marketplace for new sales every 30 minutes, 24/7, and delists the item everywhere else as soon as the sale is detected. - [An item sold but is still listed somewhere](https://wiki.treecat.io/item-sold-but-still-listed.md): Use Confirm Quantity on the Sales page to re-check sold items on every marketplace, and the Problems page to fix sales whose delists did not finish. - [Quantity and multi-quantity items](https://wiki.treecat.io/quantity-and-multi-quantity.md): How Treecat keeps one quantity in sync across marketplaces, how to keep an item listed when you have more in stock, and what to do when quantity sync fails. - [Export sales and check that delists happened](https://wiki.treecat.io/export-sales-and-delist-history.md): Export inventory and sales to CSV, see every delist Treecat ran in Settings → Events and Execution, and check sync health day to day. ## Delist, relist and sharing - [Delist and relist, scheduled relisting and Poshmark closet sharing](https://wiki.treecat.io/delist-relist-and-poshmark-sharing.md): Refresh listings with Relist now or a relist schedule, manage schedules in Scheduled Actions, and share your Poshmark closet on a schedule. - [Refresh your oldest listings gradually](https://wiki.treecat.io/refresh-old-listings.md): Sort by listing date, relist your oldest items about 100 a day, then put the whole inventory on a 30, 60 or 90-day relist schedule. ## Pricing and billing - [How Treecat pricing works and what counts as a billable event](https://wiki.treecat.io/what-counts-as-a-billable-event.md): Treecat has no subscription. You pay once per sale, only when the sold item had a Treecat action such as crosslisting. Rates, billable events and what is free. - [Billing, payment methods and promo codes](https://wiki.treecat.io/billing-payment-and-promo-codes.md): Where to see your Treecat bill, why a payment method is needed before you connect a marketplace, and how to add a promo or affiliate code. ## Account and data - [Can my assistant or team use my Treecat account?](https://wiki.treecat.io/guest-accounts-and-teams.md): Invite helpers to your Treecat store as guests for free. What guests can and cannot do, how to invite them, and how it affects billing. - [Delete your account or start over](https://wiki.treecat.io/delete-account-or-start-over.md): Use Settings → Profile to purge your Treecat data and start fresh, or delete your account. Your live marketplace listings are not touched either way. - [Get help from Treecat support](https://wiki.treecat.io/get-help.md): Contact Treecat support from the Help page or at support@treecat.io, book a call, and include the details that get your question answered fastest. ## Troubleshooting and error messages - [Error messages explained](https://wiki.treecat.io/troubleshooting-error-messages.md): What Treecat's error messages mean, grouped by cause (expired login, offline agent, marketplace block, listing data, shipping, policy) and what to do. - [Why won't an item list?](https://wiki.treecat.io/why-wont-an-item-list.md): An item stays pending, ready to list, or fails to list. The common causes, from a disconnected marketplace to a missing shipping option or small photos. ## AI assistants (MCP) - [Use Treecat with Claude, ChatGPT, Cursor and other AI assistants](https://wiki.treecat.io/ai-assistants.md): Connect an AI assistant to Treecat's MCP server to ask about inventory, sales and jobs, and, if you allow it, make changes that you confirm first. In beta.