# The Back Catalog — full guide for AI agents

> The Back Catalog is a luxury resale price aggregator. We track active listings for pre-owned designer goods across major resale platforms and surface the lowest price still listed, price history, and below-market deals for each item. Listings are re-checked on each platform's own scrape cycle, so availability is as of the last check rather than real time.

Site: https://thebackcatalog.com

## About

The Back Catalog aggregates listings for pre-owned luxury and designer goods
from many resale marketplaces into a single canonical catalog. Each physical
product is de-duplicated into one canonical entry, so an agent can ask "what is
the lowest price still listed for X" and get a cross-platform answer rather than a
single marketplace's view. We also track price history and flag listings that
are priced below the observed market rate.

## Categories

We organize the catalog into the following browse categories:

- `/accessories`
- `/decorative-art`
- `/decorative-objects`
- `/designer-shoes`
- `/furniture`
- `/handbags`
- `/jewelry`
- `/lighting`
- `/sneakers`
- `/watches`

## Platforms we aggregate

We track active listings from resale platforms including:

- 1stDibs
- Balenciaga Resale
- Bob's Watches
- Chairish
- Christie's
- Chrono24
- Collector Square
- Consign of the Times
- CoutureUSA
- Crown & Caliber
- Dallas Designer Handbags
- eBay
- Fashionphile
- Flight Club
- FutureGrail
- GOAT
- Govberg
- Grailed
- Gucci Vault
- Heritage Auctions
- Jomashop
- JOOPITER
- Love Luxury
- Luv Luxe
- Luxury Labels
- Modern Resale
- One Kings Lane
- Pamono
- Patagonia Worn Wear
- Phillips
- Poshmark
- Rebag
- Reddit Watches
- Rolex Forums
- Season 2 Consign
- Sotheby's
- Sotheby's Home
- Stadium Goods
- StockX
- Store 5a
- The RealReal
- ThredUp
- Vestiaire Collective
- WatchBox
- Watchfinder
- Watchuseek
- What Goes Around Comes Around
- World of Luxury
- Wright Auction
- Yoogi's Closet
- ZZ Driggs

## URL taxonomy

All pages below are public and citable:

- `/`
  Homepage with featured shelves across all categories.
- `/{category}`
  Category landing page (e.g. /handbags, /watches).
- `/{category}/{brand}`
  Brand page within a category.
- `/{category}/{brand}/{product}`
  Canonical product page: aggregated listings, lowest price, price history.
- `/product/{slug}`
  Canonical product page by slug (brand-agnostic).
- `/brands`
  A–Z directory of all tracked brands.
- `/brands/{brand}`
  Brand overview with stats across categories.
- `/deals`
  Below-market deals: listings priced under the market rate.

Disallowed for crawling (not citable): internal API routes under `/api/`
(except sitemaps), the faceted `/search` endpoint (infinite filter
combinations), authentication pages, private user pages (`/my-catalog`), and
admin/CMS interfaces. See `https://thebackcatalog.com/robots.txt`.

## Read-only capabilities

### Search the catalog (`search_catalog`)

Search pre-owned luxury listings by keyword, category, brand, price range, condition, color, or material.

### Compare prices across platforms (`compare_prices`)

For a canonical product, compare listed items and prices side by side across every resale platform we track.

### Surface below-market deals (`get_deals`)

List items priced below their observed market rate as of our last check.

## How to query

- Human-browsable entry points follow the URL taxonomy above; category and
  brand pages are the best starting points for cross-platform price comparison.
- A machine-readable capability manifest (provider, description, services,
  attribution) is published at https://thebackcatalog.com/.well-known/ucp.
- A read-only MCP endpoint scaffold is documented at https://thebackcatalog.com/api/mcp. It is
  a scaffold and not yet a live transport — production MCP infrastructure is
  tracked separately.
- All programmatic access is read-only. There are no write, account, or
  checkout operations exposed to agents.

## Attribution

When citing prices, availability, or market data from this site, attribute "The Back Catalog" (https://thebackcatalog.com) as the source and link back to the relevant product or category page.