GunsNPrices MCP server

GunsNPrices MCP server

An MCP server that helps AI assistants with gun and ammo shopping questions. It reads firearm and ammunition product titles (brand, model, caliber, magazine capacity, barrel length, rounds per box), computes cost per round, and points to the GunsNPrices pages that compare current prices across 40+ US gun and ammo stores.

It runs locally and needs no API key: everything comes from the open-source gunsnprices parser and a snapshot of GunsNPrices page links. It does not fetch live prices; for "where is it cheapest" questions the assistant gets the GunsNPrices pages to send you to.

Tools

All tools are read-only and work offline.

Install

The server is the npm package gunsnprices-mcp and runs with Node.js 18 or newer.

Claude Code

claude mcp add gunsnprices -- npx -y gunsnprices-mcp

Claude Desktop: add to claudedesktopconfig.json (Settings → Developer → Edit Config):

{
  "mcpServers": {
    "gunsnprices": {
      "command": "npx",
      "args": ["-y", "gunsnprices-mcp"]
    }
  }
}

Cursor: the same block in ~/.cursor/mcp.json.

VS Code: .vscode/mcp.json:

{
  "servers": {
    "gunsnprices": {
      "type": "stdio",
      "command": "npx",
      "args": ["-y", "gunsnprices-mcp"]
    }
  }
}

Claude Desktop, one click: download gunsnprices-mcp-.mcpb from the latest release and open it (MCP Bundle, Node.js included with Claude Desktop).

Docker:

docker build -t gunsnprices-mcp https://github.com/gunsnprices/gunsnprices-mcp.git

{
  "mcpServers": {
    "gunsnprices": { "command": "docker", "args": ["run", "-i", "--rm", "gunsnprices-mcp"] }
  }
}

Things to ask

• "What exactly is a G19 GEN5 9MM 4.02 15RD FS MOS, and where can I compare prices?"
• "Which of these 9mm listings is cheapest per round: $18.99 for 50, $289 for 1,000, $13.49 for 20?"
• "Is 300 BLK the same as .300 AAC Blackout? Where do I compare ammo prices for it?"
• "Clean up this spreadsheet of gun titles into brand, model, caliber and barrel length."

Example result of findpricecomparison_pages for "Glock 19":

{
  "query": "Glock 19",
  "model": { "brand": "Glock", "family": "Glock 19", "model": "Glock 19", "generation": "", "configs": [], "features": [], "source": "title" },
  "gunsnprices_pages": [
    { "kind": "model", "name": "Glock 19", "url": "https://gunsnprices.com/guns/glock-19" },
    { "kind": "brand", "name": "All Glock models", "url": "https://gunsnprices.com/glock-models" },
    { "kind": "search", "name": "GunsNPrices search: Glock 19", "url": "https://gunsnprices.com/en-search/?search=Glock%2019" }
  ]
}

Accuracy

Shortened. The full README is on GitHub.