Reseller Crosslist Tracker

Crosslisting sells more, until the same jacket sells on Poshmark and eBay on the same afternoon. Then come a cancellation, an unhappy buyer and maybe a defect on your account. Keeping track of which item is live where, at what price, and in which bin usually means a paid crosslister or a messy spreadsheet.

This Claude Code plugin keeps your inventory in one plain CSV that you own, with SKUs, costs, bin locations and status. It records each live listing per platform (eBay, Poshmark, Mercari, Depop, Etsy, Facebook Marketplace, Vinted, Whatnot, TikTok Shop). When you mark a sale, it shows a DELIST NOW list of every other live listing straight away, and refuses to mark the same item sold twice. A delist check finds sold items still live anywhere. A stale review lists items unsold after N days with a price-drop figure and other options. Stats show unsold cost and value, sales and average days to sell. An export writes per-platform drafts with titles cut to each limit at a word break.

Every change saves a dated backup, and a hook blocks commands that would rewrite, move or delete inventory.csv by accident.

Inside: 6 commands (/inv-add, /inv-sold, /inv-delist-check, /inv-stale, /inv-stats, /crosslist), a skill with the file format and rules, the inventory helper (Node.js, no packages), the guard hook, and a sample inventory with helper, hook and command test runs.

For resellers who crosslist and want their inventory in a file they control.

Limitations: it doesn't connect to any marketplace, so you record listings and sales. Sales figures are before fees.