How to Connect eBay Browse (product search) to ChatGPT via MCP

💡 No install? Use cloud.anythingmcp.com directly. Sign in, click Connectors → eBay Browse (product search), paste your credentials, mint an MCP API key and you're done. No Docker, no git clone, no local server.

eBay Browse (product search) + ChatGPT

Search live eBay listings and read item details with eBay's Browse API: prices, condition, seller, shipping and item specifics, by keyword, category, GTIN or product id. Public marketplace data with an application token, no seller account needed.

Prerequisites

See the full setup instructions baked into the connector (visible in the in-app store when you select the connector). The required environment variables for this connector are:

EBAY_CLIENT_ID, EBAY_CLIENT_SECRET, EBAY_MARKETPLACE_ID

Step 1 — Get credentials

Setting up takes about 5 minutes. You need a free eBay developer account with a production keyset; no eBay seller account and no sign-in.

1. Sign in at developer.ebay.com, open Application Keys and create a production keyset (not sandbox).
2. Copy the App ID (Client ID) into EBAY_CLIENT_ID and the Cert ID (Client Secret) of the same keyset into EBAY_CLIENT_SECRET.
3. Set EBAY_MARKETPLACE_ID to the eBay site you want to search, for example EBAY_DE, EBAY_US or EBAY_GB. AnythingMCP gets an application token with eBay's client-credentials flow and renews it every two hours by itself.
4. Install the connector and run ebay_browse_search_items with the keyword book and a limit of 1: it returns one live listing from your marketplace.

Buying side only: this connector searches and reads public listings as a buyer would see them. Selling (your orders, inventory, offers) is the separate eBay Sell connector, which needs a seller's user token. You can install both side by side.

What it reads: active listings on the configured marketplace, found by keyword, category, GTIN (EAN, UPC or ISBN) or eBay product id (ePID), each with title, price, condition, seller name and feedback, shipping options, buying options (fixed price, auction, best offer), item location and the listing URL. For one listing it reads the full description, condition description, item specifics, brand, MPN and GTIN, images, shipping and return terms, available quantity and estimated delivery.

Listing numbers and variations: paste the number from a listing URL (ebay.de/itm/123456789012) and the AI opens it with ebay_browse_get_item_by_legacy_id. A listing with sizes or colours is an item group: ebay_browse_get_item_group returns every variation with its own price and availability.

Searching and filtering: a search needs at least a keyword, a category, a GTIN or an ePID. The AI narrows it with filters such as price:[10..50],priceCurrency:EUR, conditions:{NEW}, buyingOptions:{FIXED_PRICE} or itemLocationCountry:DE, and sorts by price, newly listed or ending soonest (best match otherwise). Filtering on item specifics such as colour also needs a category.

Prices change all the time: prices are strings with a currency, in the marketplace's currency unless the seller lists in another. Price and availability move constantly, so the AI quotes them with the time of the call.

Read-only: there is no write tool. The connector does not buy, bid, make offers or change anything on eBay, so there is nothing to confirm.

Limits: an application keyset starts at 5,000 Browse calls a day. A page holds up to 200 items, and paging stops at 10,000 results (offset plus limit), so for broad searches the AI narrows with filters instead of paging through everything.

Common errors: if eBay refuses the App ID or Cert ID, you most likely pasted sandbox keys: use the keys of a production keyset. A search with no keyword, category, GTIN or ePID is refused. EBAY_MARKETPLACE_ID must look like EBAY_DE, with the EBAY_ prefix.

The connector does not buy or bid, does not sign in to an eBay account, does not search ended or sold listings, and does not manage your own listings, orders or inventory (that is the eBay Sell connector).

Step 2 — Install the adapter

curl -fsSL https://raw.githubusercontent.com/HelpCode-ai/anythingmcp/main/docker-compose.quickstart.yml -o docker-compose.yml
printf 'JWT_SECRET=%s\nENCRYPTION_KEY=%s\n' "$(openssl rand -hex 32)" "$(openssl rand -hex 32)" > .env
docker compose up -d

Step 3 — Add the connector in ChatGPT

Your server URL: in AnythingMCP, open MCP Servers → the server this connector is on, and copy its URL (https://cloud.anythingmcp.com/mcp/…). Use it wherever this guide shows YOUR_SERVER_ID.

ChatGPT adds MCP servers as plugins on its Plugins page, on the web and on paid plans. Developer mode is no longer needed. In a Business workspace only admins and owners can add one; in Enterprise and Edu an admin can grant the Create plugins with MCPs permission.

1. Go to chatgpt.com/plugins, click +, then Add custom MCP server.
2. Enter a name, e.g. Name: eBay Browse (product search).
3. Under Connection, enter the Server URL https://cloud.anythingmcp.com/mcp/YOUR_SERVER_ID and keep Authentication on OAuth.
4. Select I understand and want to continue, then Create as a plugin. When ChatGPT asks, sign in to AnythingMCP and allow access.
5. Install the new plugin from your personal plugins, then type @ in a chat and pick it.

Available tools

Example prompts

• "Find a LEGO Technic 42115 on eBay for under 300 euros, Buy It Now only, located in Germany and sorted by price."
• "What does eBay listing 123456789012 say about the condition, shipping costs and return policy?"
• "Search eBay for EAN 4006381333931 and show me the cheapest new offers including shipping."
• "Which sizes and colours of eBay listing 123456789012 are still available, and what does each cost?"
• "What are sellers asking for a used iPhone 15 128 GB on eBay right now? Give me the lowest, typical and highest price."

FAQ

Does the free ChatGPT plan work with custom MCP servers? OpenAI documents custom MCP servers for paid plans only; the Free plan is not on its list.

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