Summary
Connects Claude to the GunBroker firearms marketplace API, letting you query listings, search inventory, and pull auction data programmatically. Built by Pipeworx as part of their gateway that wraps 250+ data sources behind a unified MCP interface. You can call tools directly or use their ask_pipeworx function to make natural language queries that get routed to the right endpoints automatically. Useful if you're building tools that need to interact with firearms classifieds, track auction prices, or pull market data from GunBroker without writing your own API client. Runs over streamable HTTP, so no local installation needed.
Plug Mailtrap into your AI workflow and let it handle the email.
Connect Mailtrap MCP →
Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →
Make coding agent sessions - Searchable, Shareable, Vendor-neutral & Scored.
Try For Free →
Your agent targets a perfect 10 Code Health score. Deterministic. Every commit.
Try For Free →
Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →
belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...
one prompt install →mcp-gunbroker
GunBroker MCP Pack — wraps the GunBroker firearms-marketplace API.
Part of Pipeworx — an MCP gateway connecting AI agents to 1476+ live data sources.
Tools
| Tool | Description |
|---|---|
gunbroker_search_items | Search active GunBroker firearms-marketplace listings by keyword (e.g. "Glock 19", "AR-15 lower", "Henri 22 rifle"). Returns matching live listings with item IDs, titles, current/buy-now prices, bid counts, and time left. Public — needs only a GunBroker developer key (_apiKey). Supports pagination and sort. |
gunbroker_get_item | Get full details for a single GunBroker listing by item ID — title, description, prices, seller, shipping, condition, category, and time remaining. Public — needs only a GunBroker developer key (_apiKey). |
gunbroker_seller_orders | List the authenticated seller's sold orders (GunBroker /OrdersSold) — order IDs, buyers, item titles, totals, payment and shipping status. Seller tool: needs a GunBroker developer key (_apiKey) PLUS the seller's GunBroker username and password, which are exchanged for a short-lived access token on each call. |
Quick Start
Add to your MCP client (Claude Desktop, Cursor, Windsurf, etc.):
{
"mcpServers": {
"gunbroker": {
"url": "https://gateway.pipeworx.io/gunbroker/mcp"
}
}
}
What this endpoint actually serves
tools/list at https://gateway.pipeworx.io/gunbroker/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 1476+ data sources. The
only difference is which pack's tools are listed directly; ask_pipeworx
reaches all of them from either one.
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 Gunbroker data" })
The gateway picks the right tool and fills the arguments automatically.
More
License
MIT
Featured
Plug Mailtrap into your AI workflow and let it handle the email.
Connect Mailtrap MCP →Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →Make coding agent sessions - Searchable, Shareable, Vendor-neutral & Scored.
Try For Free →Your agent targets a perfect 10 Code Health score. Deterministic. Every commit.
Try For Free →Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...
one prompt install →