How to Use AI Crosslisting with Treecat’s AI Autofill Feature

If you sell on multiple marketplaces, crosslisting can quickly turn into a time-consuming task. In this walkthrough, Treecat’s Michelle explains how to use AI autofill to crosslist items in bulk, helping sellers move from eBay to marketplaces like Mercari and Poshmark more efficiently.

1. Tag Items for Bulk Crosslisting

The process starts with organizing inventory.

Michelle explains that after listing a batch of items on eBay, she adds a custom SKU tag to identify them later. In her example, she uses the tag “list 100” so she can quickly pull up those 100 items in Treecat’s Fast List View or Card View.

This makes it easy to:

• Filter the exact group of items you want
• Select listings in bulk
• Prepare them for crosslisting without manually searching one by one

2. Use Treecat’s Fast List View to Select Listings

Once the tagged items are loaded into Treecat, Michelle shows how the platform displays listings that already have eBay data filled out, while marketplaces like Mercari and Poshmark remain blank.

That’s where Treecat’s bulk workflow becomes useful. With Fast List View, you can:

• See multiple listings at once
• Select a batch of items
• Start the crosslisting process from a single action

This is especially helpful when you’re handling large inventory batches and want to save time.

3. Run AI Autofill for Mercari and Poshmark

After selecting the 100 tagged items, Michelle goes to Main Actions and chooses Autofill 100 items. From there, she uses the beta AI autofill option and tells Treecat to autofill the listings for Mercari and Poshmark.

In her demo, the AI fills out the listings in about 5 minutes and 22 seconds.

A few notes from the walkthrough:

• The AI does a strong job filling in listing details
• Hashtags may need to be added manually later
• Some fields, like original price on Poshmark, may still require editing

4. Review and Edit Before Listing

Michelle emphasizes an important point: AI autofill is not the final step.

Before publishing, sellers should review each listing and make any needed corrections. In her example, she manually adjusts a color field from one value to another and saves the change.

This final editing step matters because:

• AI-generated content may not always be perfect
• Marketplace-specific fields may need manual input
• Accurate listings help avoid issues later

Treecat is designed to speed up the workflow, not replace the seller’s judgment.

5. List in Bulk While Treecat Runs in the Background

After editing, Michelle goes back to Main Actions and selects List 100 items to publish the listings to Mercari and Poshmark.

She also highlights a major benefit of Treecat: the process can run in the background.

Because Treecat is a native Mac and PC application rather than a Chrome extension, users can:

• Keep listing in the background
• Work on other tasks at the same time
• Check sales, print manifests, or handle shipping
• Run additional crosslisting or inventory cleanup tasks

This makes it easier to keep the business moving without being tied to the screen.

6. Why Treecat’s AI Crosslisting Workflow Helps Sellers

Treecat’s AI autofill feature is built for sellers who want to move faster across marketplaces without doing repetitive listing work manually.

The workflow shown in the video helps sellers:

• Organize inventory with custom tags
• Select listings in bulk
• Autofill marketplace fields with AI
• Review and edit before publishing
• Continue working while tasks run in the background

Michelle closes by recommending Treecat as a risk-free way to try AI-assisted crosslisting, with no fee to test the platform.

If you’re looking to speed up your reselling operations, Treecat’s AI autofill feature can help streamline the crosslisting process from start to finish.