Secondhand MCP

Search Facebook Marketplace, eBay, Depop and Poshmark from your assistant — one marketplace or all of them at once.

CommunityOnlineNo sign-inGlobalFreeRead-only

What it can do

  • Search Marketplace: Search live listings on secondhand marketplaces. Choose the marketplace that fits what the user is looking for: • facebook — local pickup: furniture, appliances, tools, bikes, baby
  • Get Listing Details: Get full details for a specific listing using an ID from search results: description, all photos, location, seller info, shipping. Always show the user the listing url alongside t
  • List Marketplaces: List all available marketplaces and their status for the current user. Shows which marketplaces are accessible on the current plan and whether eBay API credentials have been configu

What data it sees

Do you need an account

No: the server works without sign-in

Search Facebook Marketplace, eBay, Depop and Poshmark from your assistant — one marketplace or all of them at once.

Filter by price, condition, size, brand and colour, then pull the full listing: every photo, seller details, location, and a link straight to it.

Hosted, so there's nothing to install and no browser running in the background. Free tier included; eBay uses your own API keys.

How to connect

How to connect Secondhand MCP to Claude

The server address to paste into Claude settings:

https://secondhand-mcp--jlsookiki.run.tools

  1. Open Claude (claude.ai or the desktop app).
  2. Go to Settings → Connectors.
  3. Click Add custom connector.
  4. Paste the server address copied below into Remote MCP server URL and click Add.
  5. In a chat, click + → Connectors and switch the new connector on.

Custom connectors are available on Free, Pro, Max, Team and Enterprise plans (Free is limited to one). On Team and Enterprise an organization Owner adds the connector first under Organization settings → Connectors.

Authorization

After you click Add, a sign-in window for the service opens. Sign in with your own account and approve access. Claude never sees your password.

How to connect Secondhand MCP to ChatGPT

The server address to paste into ChatGPT settings:

https://secondhand-mcp--jlsookiki.run.tools

  1. Open ChatGPT in a browser (chatgpt.com). A Plus, Pro, Business, Enterprise or Edu plan is required.
  2. Turn on developer mode once: Settings → Apps → Advanced settings → Developer mode.
  3. Open Settings → Connectors and click Create.
  4. Fill in the form: Name (anything), Description (one line about what the service does), MCP server URL (copy it below).
  5. Under Authentication choose OAuth if the service requires sign-in, otherwise None. Click Create.
  6. In a new chat open + → Apps/Connectors and enable the connector.

OpenAI has renamed this section before (Connectors → Apps/Plugins). If the label differs, search settings for "developer mode". On Business/Enterprise workspaces an admin must allow custom connectors first.

Authorization

On first use ChatGPT opens the service's sign-in window. Sign in and approve access.

How to connect Secondhand MCP to Cursor

The server address to paste into Cursor settings:

https://secondhand-mcp--jlsookiki.run.tools

Fastest: click Open in Cursor below and confirm the prompt.

Manually:

  1. In Cursor open Settings → Cursor Settings → MCP and click Add new global MCP server.
  2. Paste the JSON copied below into ~/.cursor/mcp.json (per project: .cursor/mcp.json in the repo root).
  3. Save the file. The server appears in the MCP list; authorize it there if asked.

Authorization

If the service needs sign-in, an authorize button appears next to the server in the MCP list.

Server tool list (8)

Raw names from tools/list. Only developers need these.

search_marketplaceSearch live listings on secondhand marketplaces. Choose the marketplace that fits what the user is looking for: • facebook — local pickup: furniture, appliances, tools, bikes, baby gear, anything bulky or cheap to buy nearby. Requires `location` as "City, ST". • ebay — collectibles, electronics, parts, media, trading cards, and anything shipped nationwide. Best for finding a specific model or comparing prices. • depop — vintage, streetwear, y2k and secondhand fashion, skewing younger. • poshmark — brand-name clothing, shoes, handbags and accessories. • all — searches every marketplace at once and compares results (Pro+ plans). Every listing includes its direct url. Always give the user each listing you mention as a clickable link — never make them ask for it — passing each url through as returned. eBay urls carry a disclosed affiliate parameter that supports this service at no cost to the user. When the user names a marketplace, use it. When they describe an item instead, pick by intent from the list above, and prefer facebook when the request is local or the item is bulky. All marketplaces work without setup.
get_listing_detailsGet full details for a specific listing using an ID from search results: description, all photos, location, seller info, shipping. Always show the user the listing url alongside the details, without being asked. Photos: by default (imageMode:"urls") you get direct full-resolution CDN image URLs to fetch yourself — most reliable, since some CDNs block server-side fetches. Set imageMode:"inline" (or includeImages:true) to have the server fetch the photos and return them as base64 image blocks inline. Use imageSize to trade resolution for payload and maxImages to cap the count.
list_marketplacesList all available marketplaces and their status for the current user. Shows which marketplaces are accessible on the current plan and whether eBay API credentials have been configured.
redeem_codeRedeem a Secondhand MCP promo code on the current user's account (e.g. a free-trial code). Takes effect immediately — upgraded limits and marketplaces apply from the next tool call. Only affects the user's own Secondhand MCP account; never touches any marketplace.
searchSearch all accessible secondhand marketplaces at once (deep research). Returns results whose IDs (marketplace:listingId) can be passed to the fetch tool for full listing details. Counts against deep research quota.
deep_research_searchDeprecated alias of search; use search. Search all accessible secondhand marketplaces at once (deep research). Returns results whose IDs (marketplace:listingId) can be passed to the fetch tool for full listing details. Counts against deep research quota.
fetchFetch full listing details for a result ID returned by the search tool. ID format: marketplace:listingId (e.g., "facebook:12345" or "ebay:v1|123|456").
deep_research_fetchDeprecated alias of fetch; use fetch. Fetch full listing details for a result ID returned by the search tool. ID format: marketplace:listingId (e.g., "facebook:12345" or "ebay:v1|123|456").