# Marketplace connections

Connect the places where you sell cards and keep their stock in step with TCG STATS.

> Documentation index: https://tcgstats.com/docs/llms.txt

A marketplace connection lets TCG STATS publish listings, receive orders or update stock for that sales channel.

## Supported connection types

| Marketplace | Connection method           | Important detail                          |
| ----------- | --------------------------- | ----------------------------------------- |
| eBay        | eBay API           | Business policies must be ready           |
| Cardmarket  | Browser extension | Open Cardmarket to process changes        |
| CardTrader  | API token                   | Product must match a CardTrader blueprint |
| Shopify     | Custom Shopify app       | Store installation must be approved       |
| WooCommerce | Store URL and API keys      | Keys need read and write access           |

## Before publishing cards

After connecting a marketplace:

1. check that the connection shows as active;
2. review marketplace-specific settings;
3. publish one test card;
4. confirm the title, price and quantity on the marketplace;
5. only then publish a larger batch.

## One inventory, several marketplaces

The same physical card can be listed on more than one marketplace. TCG STATS keeps the available quantity centrally so a sale can update the other channels.

> Never increase a marketplace quantity directly unless the same physical quantity also exists in TCG STATS.

Source: https://tcgstats.com/docs/marketplaces