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Sold anywhere, take down everywhere

For someone clearing out a closet across several marketplaces. One inventory record holds each item, a cron job checks every live listing for a sold signal, and the moment one sells the quantity locks to zero and every other listing is flagged to take down.

Ecommerce and resaleWorks with Claude Desktop with MCP · Claude Code+1Community example

What it does

  • Identifies the item from phone photos: brand, size, condition and a value estimate
  • Prices each marketplace backward from the amount you want to keep after fees and shipping
  • Writes a listing per platform within its title and length rules
  • Checks every live listing every 10 minutes for a sold out signal
  • Locks the inventory to zero on the first sale and lists the other listings to remove

Your approval boundaries

Approval required

These actions always wait for your yes:

  • Publishing each listing in your own signed in browser
  • Taking down the other listings after a sale
  • Accepting any offer

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 identifies the item from phone photos: brand, size, condition and a value estimate. Next, it prices each marketplace backward from the amount you want to keep after fees and shipping. Then it writes a listing per platform within its title and length rules. After that, it checks every live listing every 10 minutes for a sold out signal. Finally, it locks the inventory to zero on the first sale and lists the other listings to remove. It works with your store admin, marketplace APIs and photo storage, 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 publishing each listing in your own signed in browser, taking down the other listings after a sale and accepting any offer, and says plainly if a step cannot be undone.

“Shopify quantity is the lock.”
yingying-chu yingying-chu on GitHub · Oct 14, 2026
Before you startStore admin · Marketplace APIs accessScoped permissionsClaude Desktop with MCP or Claude Code
Explore required tools and model recommendations

Tools and access

  • Shopify

    Handles the store admin part of this job. Grant read orders and products.

    API required: Yes. Needs a Shopify app with an access token and the admin scopes you approve.

  • 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.

  • Photo storage

    Handles the photo storage part of this job. Grant read-only access to one photo folder.

    API required: No. A shared folder or drive for item photos. No API needed if the agent can read it.

    No sign-up needed

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.

e.g. poshmark, vinted, local pickup

least you want after fees

the one place that holds quantity

e.g. every 10 minutes

2Your prompt

4 of 4 still empty
Fill these in before you run it: [MARKETPLACES: e.g. poshmark, vinted, local pickup] [TAKE HOME FLOOR: least you want after fees] [INVENTORY RECORD: the one place that holds quantity] [CHECK INTERVAL: e.g. every 10 minutes] You are the Sold anywhere, take down everywhere agent. For someone clearing out a closet across several marketplaces. One inventory record holds each item, a cron job checks every live listing for a sold signal, and the moment one sells the quantity locks to zero and every other listing is flagged to take down. 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: - Identifies the item from phone photos: brand, size, condition and a value estimate - Prices each marketplace backward from the amount you want to keep after fees and shipping - Writes a listing per platform within its title and length rules - Checks every live listing every 10 minutes for a sold out signal - Locks the inventory to zero on the first sale and lists the other listings to remove What you must never do without a yes from a person: - Publishing each listing in your own signed in browser - Taking down the other listings after a sale - Accepting any offer 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: Claude Desktop with MCP, Claude Code, ChatGPT agent

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 Shopify with its own login, not yours. Grant read orders and products.
  2. 2Connect eBay with its own login, not yours. Grant read scopes for orders and listings.
  3. 3Set up Photo storage. Keep it to read-only access to one photo folder.
  4. 4Paste the prompt where your harness takes instructions. See the note under the Copy button.
  5. 5Do 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.
  6. 6Read 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 approval30 / 30

Waits for a yes on: publishing each listing in your own signed in browser, taking down the other listings after a sale, accepting any offer.

Undo and logs14 / 20

Proposes changes to live records, so the setup needs a change log and a way back.

Scope16 / 20

Runs on its own login across 3 tools. 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
  • Undo and logs: Stop it from editing live records. Have it write the change as a proposal you apply, and keep a log of every change with a way to roll it back +3
  • Scope: Cut it down from 3 connected tools to the 2 it needs most, each with its own limited login instead of your full account +2

Do all of these to reach 89, up from 78.

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

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