ShopGoodwill Auctions

Search active auctions, closed auctions with realized sale prices, and per-item detail from shopgoodwill.com — the online auction site run by Goodwill member organizations (170+ regional sellers listing cameras, jewelry, watches, art, electronics, instruments and collectibles).

Part of Pipeworx — an MCP gateway connecting AI agents to 1857+ live data sources. This is an independent, unofficial integration — not affiliated with, endorsed by, or published by the upstream provider.

The closed-auction search is the comps value: it returns what lots actually sold for (final hammer price and bid count), reaching back roughly 90 days.

Tools

Timestamps carry no timezone marker and are US Pacific (site convention).

Related MCP server: mcp-gsa-auctions

Auth

None. The search and item-detail endpoints answer without credentials.

Data sources

• ShopGoodwill buyer API: https://buyerapi.shopgoodwill.com/api/Search/ItemListing (search, active and closed) and https://buyerapi.shopgoodwill.com/api/itemDetail/GetItemDetailModelByItemId/{id} (item detail) — the same JSON backend the shopgoodwill.com web app uses.

• Request shapes documented by the community client scottmconway/shopgoodwill-scripts.

Upstream quirks (measured 2026-09-05)

• A wrong or incomplete search body returns zero rows with a clean 200 — lowPrice/highPrice must be "0"/"999999"-style strings, never empty.

• pageSize is silently ignored — every page is exactly 40 rows (ask 5 or 100, get 40, no error); pagination is via page. The tools' per_page is applied client-side.

• The closed-auction archive reaches back ~90 days regardless of the closedAuctionDaysBack value requested.

• A nonexistent item id returns a 404 with an empty body.

Quick Start

Add to your MCP client (Claude Desktop, Cursor, Windsurf, etc.):

{
  "mcpServers": {
    "shopgoodwill": {
      "url": "https://gateway.pipeworx.io/shopgoodwill/mcp"
    }
  }
}

What this endpoint actually serves

tools/list at https://gateway.pipeworx.io/shopgoodwill/mcp returns the tools in the table above plus the shared Pipeworx meta-tools — ask_pipeworx, discover_tools, search_within, remember/recall and the rest of the gateway-wide set. So the tool count you see is larger than this table: a single-pack endpoint currently lists roughly 30 shared tools alongside the pack's own. The connection's initialize response states its exact scope, and is the authoritative answer for a given day.

This is deliberate, not multiplexing by accident. The meta-tools are what let a scoped connection answer a question this pack does not cover — via ask_pipeworx, which routes across the whole catalog — without you adding a second MCP server. There is currently no way to mount a pack endpoint without them; if the extra schemas cost you more context than the routing is worth, connect to the full gateway once rather than to several pack endpoints.

Or connect to the full Pipeworx gateway to get every pack's tools listed directly, instead of just this one's:

{
  "mcpServers": {
    "pipeworx": {
      "url": "https://gateway.pipeworx.io/mcp"
    }
  }
}

Both URLs reach the same gateway and the same 1857+ data sources. The only difference is which pack's tools are listed directly; ask_pipeworx reaches all of them from either one.

No MCP client? Call it over HTTP

curl -X POST https://gateway.pipeworx.io/v1/tools/shopgoodwill_search \
  -H 'Content-Type: application/json' \
  -d '{"query":"nikon","per_page":5}'

No account needed for the first calls. Inspect any tool: GET https://gateway.pipeworx.io/v1/tools/shopgoodwill_search. Find one: POST https://gateway.pipeworx.io/v1/tools/search_packs with {"query":"..."}.

Run it from npm

@pipeworx/mcp-shopgoodwill is a local stdio bridge to the Pipeworx gateway: your MCP client starts it with npx, and it forwards every call to the same https://gateway.pipeworx.io/shopgoodwill/mcp endpoint shown above. It needs network access; there is no offline mode.

{
  "mcpServers": {
    "shopgoodwill": {
      "command": "npx",
      "args": ["-y", "@pipeworx/mcp-shopgoodwill"]
    }
  }
}

Without a key it calls anonymously, capped at 50 calls a day. A free account raises that to 200 a day: get a key at https://pipeworx.io/signup and add "env": { "PIPEWORX_API_KEY": "<your key>" } to the server entry. The key is sent as a Bearer token, the same way a hosted connection sends it, so calls are metered and billed exactly as they are there.

It lists only this pack's tools by default. Set PIPEWORX_META_TOOLS=1 to also list ask_pipeworx and the other gateway-wide tools.

Behind an HTTPS proxy: Node's built-in fetch does not read HTTPS_PROXY by default. Newer Node releases honour it when NODE_USE_ENV_PROXY=1 is set; check your Node version's documentation.

Using with ask_pipeworx

Instead of calling tools directly, you can ask questions in plain English — this works on the pack endpoint above as well as on the full gateway:

ask_pipeworx({ question: "your question about Shopgoodwill data" })

The gateway picks the right tool and fills the arguments automatically.

More

• Docs and guides

• pipeworx.io

License

MIT