MCP server for searching secondhand marketplaces — Facebook Marketplace, eBay, and Depop. Search listings, filter by price/category/condition, and
Secondhand MCP MCP server is a hosted integration for AI assistants that speak the Model Context Protocol. MCP server for searching secondhand marketplaces — Facebook Marketplace, eBay, and Depop. Search listings, filter by price/category/condition, and get full details with photos.
A Model Context Protocol (MCP) server that lets AI assistants search secondhand marketplaces. Search Facebook Marketplace, eBay, Depop, and Poshmark for used and secondhand items — filter by price, category, condition, size, and color, then get full listing details with photos, descriptions, and seller info.
Once Secondhand MCP is connected, these are the calls the assistant has available:
search_marketplace — The search_marketplace tool exposed by this serverget_listing_details — Get full details for a specific listing using an ID from search resultslist_marketplaces — The list_marketplaces tool exposed by this serverBeing a remote server, there is no local install. You register the endpoint with your client, authorise it once, and the tools appear.
You will need 4 environment variables: EBAY_CLIENT_ID, EBAY_CLIENT_SECRET, EBAY_MARKETPLACE_ID, MARKETPLACES. The server will not start without them, which is usually why the tools fail to appear on a first run. Keep credentials in your client's env block or a secrets manager rather than in a file you might commit.
Plenty of developer tooling servers cover similar ground. The differences that matter in practice are scope of access and how much setup stands between you and a working tool call. Secondhand MCP's toolset — search_marketplace, get_listing_details, list_marketplaces — is a fair guide to whether it matches your workflow. It is maintained by jlsookiki; worth a glance at recent repository activity before you build anything load-bearing on it.
We check each listing at SyncDev against the project's documentation before it goes live — if something here drifts out of date, it is a bug worth reporting.
| Tool | What it does |
|---|---|
| search_marketplace | The search_marketplace tool exposed by this server. |
| get_listing_details | Get full details for a specific listing using an ID from search results. |
| list_marketplaces | The list_marketplaces tool exposed by this server. |
{
"mcpServers": {
"secondhand": {
"command": "npx",
"args": ["-y", "secondhand-mcp"],
"env": {
"EBAY_CLIENT_ID": "your-ebay-client-id",
"EBAY_CLIENT_SECRET": "your-ebay-client-secret",
"EBAY_MARKETPLACE_ID": "EBAY_US"
}
}
}
}Configuration as documented by the project. Restart the client after saving.
| Variable | Description | Required |
|---|---|---|
| EBAY_CLIENT_ID | Configuration value read at startup. | Optional |
| EBAY_CLIENT_SECRET | Credential the server authenticates with. | Yes |
| EBAY_MARKETPLACE_ID | Configuration value read at startup. | Optional |
| MARKETPLACES | Configuration value read at startup. | Optional |
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