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Reseller Listing Writer

Agent kit that turns your notes into honest resale listings for eBay, Poshmark, Mercari, Depop, Etsy, Facebook Marketplace and Vinted: titles in limits, condition, measurements.

Updated Oct 30, 2026Marketplace Founder

About Reseller Listing Writer

Crosslisting one item means writing it four different ways. eBay allows 80 characters, Etsy 140, and Poshmark and Mercari far fewer. Every app has its own condition labels, and Depop has no title at all. Rushed listings miss a flaw or a measurement, and that becomes a return.

This agent kit takes your rough notes and writes each item for the platforms you choose. You get titles that fit each limit, with character counts and a formula for each category, and the right condition label for each app, choosing the lower one when in doubt. It adds a measurements table, measured flat, and an honest description that includes every flaw you mentioned. It also fills item specifics and gives you a photo checklist and a confirm list. It never uses other brands' names to catch searches, never writes "inspired by" or "dupe", and only says "authentic" with proof. For electronics, it states exactly what was tested and whether data was erased.

Inside: the agent instructions, a platform-formats guide (title limits, condition labels, words to avoid, item specifics), a measuring and condition guide (by category, plus electronics and toys notes), conversation starters, a Claude Code subagent and a worked example with three items.

For resellers, thrift flippers and anyone clearing out a closet.

Limitations: it doesn't price or authenticate items, and it doesn't post. Some platform limits are reported differently by different sources, so check each app's counter.

Scanned: no issues found

Release v1.0.0 reviewed by AgentLoomX™ · 9 files · 15.6 KB

Signed release

This package can

Nothing special: the scan found no shell commands, network calls, hooks or access to secrets.

What's inside (9 files)
  • reseller-listing-agent/CHANGELOG.md
  • reseller-listing-agent/claude-code/agents/reseller-listing-agent.md
  • reseller-listing-agent/examples/example-1.md
  • reseller-listing-agent/instructions.md
  • reseller-listing-agent/knowledge/measuring-and-condition.md
  • reseller-listing-agent/knowledge/platform-formats.md
  • reseller-listing-agent/LICENSE.txt
  • reseller-listing-agent/README.md
  • reseller-listing-agent/starters.md
Read the README reseller-listing-agent/README.md
# Reseller Listing Writer

An agent kit that writes resale listings for clothing, shoes, bags, home goods, electronics, toys and vintage items. It covers eBay, Poshmark, Mercari, Depop, Etsy, Facebook Marketplace and Vinted. Give it your notes. For each item you get:
- a title for each platform, within its limit, with character counts;
- the right condition label for each platform, and why;
- a measurements table, measured flat;
- an honest description that includes every flaw;
- item specifics, a photo checklist and a list of things to confirm.

It never uses other brands' names to catch searches. It never writes "inspired by" or "dupe", and it only says "authentic" with proof.

Made by AgentLoomX (https://agentloomx.com). Version 1.0.0.

## Who it's for

- Part-time and full-time resellers crosslisting on several apps.
- People clearing out a closet or a house.
- Thrift flippers who want listings that don't come back as returns.

For trading cards, see our Card Listing Writer instead.

## What's inside

```
reseller-listing-agent/
  instructions.md                       the agent's instructions (system prompt)
  knowledge/platform-formats.md         title limits and formulas, condition labels, words to avoid, item specifics
  knowledge/measuring-and-condition.md  measuring by category, describing flaws, electronics and toys notes, photo checklist
  starters.md                           conversation starters
  claude-code/agents/reseller-listing-agent.md   Claude Code subage

…

The full file is included with your purchase.

SHA-256 321a11aa2a700945f7b5a00a2c268127639602887ea320e713ab67a1fdbcb366

Signed with Ed25519 key a9c62a7921065aa9. Public keys

Scans catch known risky patterns; they are not a guarantee. Report anything that looks wrong to support.

Highlights

  • Titles for each platform, with counts
  • Right condition label per app
  • Measurements table, measured flat
  • Every flaw disclosed, no hype
  • No keyword spam or 'inspired by'
  • Electronics: tested functions and data wipe
  • reselling
  • ebay listings
  • poshmark
  • mercari
  • depop
  • crosslisting
  • thrift flipping