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Cross listing helper

Gets one item ready for several marketplaces at once.

Ecommerce and resaleWorks with n8n · Make+2
Build your promptSee requirements

What it does

  • Adapts the title and details per site
  • Checks each site's rules
  • Builds ready drafts

Your approval boundaries

Approval required

These actions always wait for your yes:

  • Posting to any site

You decide what happens next.

More about this workflow

This setup is for online sellers and resale shops juggling listings, orders and buyers. It takes a repeat chore off your plate and hands back something you can check quickly.

First, it adapts the title and details per site. Next, it checks each site's rules. Finally, it builds ready drafts. It works with your marketplace APIs, each on its own login with limited access.

You get the prep work done and waiting for you. The agent stops and asks for your yes before posting to any site, and says plainly if a step cannot be undone.

Before you startMarketplace APIs accessScoped permissionsn8n or Make
Explore required tools and model recommendations

Tools and access

  • eBay

    Handles the marketplace apis part of this job. Grant read scopes for orders and listings.

    API required: Yes. Needs an eBay developer account and an app keyset. Seller actions use OAuth tokens with the scopes you grant.

    Sign up: eBay Developers Program

Official links only. Not sponsored, no affiliate links.

Model recommendations

Best pick

Gemini 3.8 Flash

Built for agent workflows, with a free tier to test on.

$0.75 per million input tokens and $3.75 per million output tokens through December 31, 2026. $1.50 and $7.50 from January 1, 2027.

Google docs as of October 11, 2026

Cheaper backup

Gemini 3.5 Flash-Lite

Low cost for many listings at once.

$0.30 per million input tokens, $2.50 per million output tokens.

Google docs as of October 11, 2026

Our own picks. Not sponsored, no affiliate links.

Build your prompt

Add your details, then copy the prompt into your tool.

1Your details

Fill these in and the prompt updates as you type.

2Your prompt

3 of 3 still empty
Fill these in before you run it: [THE MARKETPLACES TO LIST ON] [YOUR SOURCE LISTING OR ITEM DETAILS] [PRICE RULES PER MARKETPLACE] You are the Cross listing helper agent. Gets one item ready for several marketplaces at once. Use only the details filled in above. If any [BRACKETED] item is still blank or unclear, stop and ask for it first. Do not guess. What you do on your own: - Adapts the title and details per site - Checks each site's rules - Builds ready drafts What you must never do without a yes from a person: - Posting to any site Rules: - Before any step on the list above, stop and ask. Say in plain words what you want to do, who it affects, and whether it can be undone. - If something cannot be undone, say so first, in one short line. - Write drafts, not final actions. A person sends, pays, posts, or deletes. - Keep a short log of every action you took and every source you read. - If you are unsure, ask instead of guessing.
View run instructionsPaste into: n8n, Make, ChatGPT agent, Claude Desktop with MCP

Your answers stay in this browser only.

Run your workflow

Connect your tools with only the access this setup needs, then follow these steps.

Steps

Do these in order. Test on old data before it touches live work.

  1. 1Connect eBay with its own login, not yours. Grant read scopes for orders and listings.
  2. 2Paste the prompt where your harness takes instructions. See the note under the Copy button.
  3. 3Do a dry run on old or test data first. Check every draft and every stop point by hand before you let it near live work.
  4. 4Read its log after the first real run. Only widen access once a week of runs looks clean.

Safeguards and trust score

The score describes this example setup’s access, approval boundaries, ability to undo changes, and scope.

Access18 / 30

Can draft things that send or spend, so it sits close to risky actions.

Human approval27 / 30

Waits for a yes on: posting to any site.

Undo and logs17 / 20

Leaves drafts you can throw away, with a record of what it made.

Scope20 / 20

Runs on its own login across 1 tool. Fewer connections means a smaller blast radius.

How to raise it

  • Access: Take away its ability to send, post or spend. Let it only write drafts, and have a person press send or pay from their own account +6
  • Human approval: Add a second named stop next to "posting to any site", so every step that leaves your hands waits for a yes, and have the confirm say plainly what cannot be undone +3

Do all of these to reach 91, up from 82.

Want help getting there? Get an AI Trust Audit from Pixeldesigns

Reviewed by Trustcase (example setup). How scoring works

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