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GunsNPrices

Parses US gun and ammo listings, calculates round costs, and links to GunsNPrices comparison pages.

  • Ownership verifiedThe owner proved control of this listing via a GitHub README, site badge, or DNS TXT record.
  • Runs, needs keysIt installed and started in our sandbox, then stopped for configuration such as an API key.
  • Health: ActiveRecent health check succeeded.Last checked 10/26/2026, 11:15:30 PM
  • E-Commerce
  • No ratings User RatingsBe the first to rate and review this MCP server!
  • UpdatedOct 15, 2026
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Install GunsNPrices

Pick your client, then add it in one click or paste the config.

STDIONode.js
~/Library/Application Support/Claude/claude_desktop_config.json
claude_desktop_config.json
{
  "mcpServers": {
    "gunsnprices": {
      "command": "npx",
      "args": [
        "-y",
        "gunsnprices-mcp"
      ]
    }
  }
}

Settings → Developer → Edit Config, merge this into mcpServers, then fully quit and reopen Claude Desktop.

We couldn’t confirm it starts correctly

The install command started, but didn't respond the way we expected when we tried to talk to it.

npx -y gunsnprices-mcp

initialize succeeded but no response to tools/list.

This is an experimental automated check and can have false negatives — missing environment variables, a slow cold install, etc. It doesn’t necessarily mean something’s wrong. Last checked 9d ago.

Overview

The GunsNPrices MCP server parses firearm and ammunition product titles, identifies models and calibers, and calculates ammunition cost per round. It returns links to GunsNPrices comparison pages covering more than 40 US stores, using local read-only data over stdio. Use it to normalize shopping listings or direct an assistant to relevant comparison pages; it does not retrieve live prices.

Use cases

  • Parse firearm and ammunition titles into structured fields
  • Compare ammunition prices by cost per round
  • Find model-specific GunsNPrices comparison pages
  • Normalize caliber names from shopping listings
  • List supported firearm brands and calibers

Key features

  • Read-only stdio MCP server
  • Firearm model recognition for 50 brands
  • Caliber lookup covering 293 known calibers
  • Ammunition cost-per-round calculation
  • GunsNPrices comparison-page discovery
  • Offline operation without an API key

Tools6

What GunsNPrices lets your agent do. Expand a tool for its parameters.

Self-reported~163 tokens of context

Security & health

What it can reach and how reliably it runs — from our own checks, not the maintainer’s claims.

ActiveLast checked 2d ago

Recent health check succeeded.

4/4 checks healthy over the last 14d

Supply-chain signal

No high-severity advisories surfaced by our automated scan.

Critical 0High 0Medium 0Low 0

Scanned 14d ago via OSV.dev · gunsnprices-mcp (npm)

Adoption & maintenance

Factual signals from GitHub, npm, and our automated checks — not a rating.

npm downloads340Package downloads in the last 30 days.
Last commit13d agoMost recent push to the default branch.
MaintenanceActively maintainedStatus declared by the project or listing owner.
Install checkInconclusiveStarted but did not complete the MCP handshake in our test.
Tools exposed6Callable tools this server registers over MCP.
Directory activity2 viewsConfig copies, upvotes, and views on AllMCPs.

How GunsNPrices works

What GunsNPrices MCP server does

The GunsNPrices MCP server provides read-only tools for structuring firearm and ammunition shopping data. It can turn a product title into fields such as product type, brand, model, caliber, magazine capacity, barrel length, rounds per box, and cost per round. It can also identify firearm model families and exact models from titles or descriptions.

The server works with GunsNPrices comparison-page links for models, brands, and calibers. Those pages cover price comparisons across more than 40 US gun and ammunition stores. Results prioritize the most specific page available, such as a model page before a broader brand or search page.

This fits the E-Commerce category when an assistant needs to clean product data, compare ammunition unit costs, or route a user to a relevant GunsNPrices page. It is not a purchasing or transaction tool.

How it works

The server runs locally through the Model Context Protocol over stdio. Its parsing behavior comes from the open-source gunsnprices parser, while comparison URLs come from a snapshot of GunsNPrices page links. The tools operate offline and do not require an API key.

For firearm recognition, the parser supports 50 brands and can decode Glock part numbers. Caliber lookup covers 293 known calibers, including inputs such as 9mm Luger, 300 BLK, 12ga, and 6.5 CM. The cost calculation tool accepts a price and round count, or can derive the round count from a supplied product title.

The server does not fetch current prices. When a request asks where an item is cheapest, the GunsNPrices MCP server supplies comparison-page URLs for the assistant or user to open separately.

Setup and configuration

Node.js 18 or newer is required. Install and run the package with npx:

Terminal
npx -y gunsnprices-mcp

For Claude Code, register that command with claude mcp add gunsnprices -- npx -y gunsnprices-mcp. Claude Desktop and Cursor use an MCP configuration with command set to npx and arguments ['-y', 'gunsnprices-mcp']. VS Code uses the same command as a stdio server in .vscode/mcp.json.

A Claude Desktop MCP bundle is also available from the latest GitHub release. Alternatively, build the included Docker image and run it interactively with Docker. No environment variables or API credentials are documented as required.

Tools and capabilities

  • parse_product_title extracts firearm or ammunition details and may include comparison-page links.
  • identify_firearm_model recognizes model families and exact models from a title or description.
  • lookup_caliber maps a caliber expression to a standard name, type, and ammunition price page.
  • cost_per_round calculates unit ammunition cost from price and quantity.
  • find_price_comparison_pages returns model, brand, or caliber comparison links in specificity order.
  • list_supported lists the recognized firearm brands or known calibers.

Limitations and notes

All tools are read-only and offline. The comparison URLs point to GunsNPrices pages but do not contain live price results from the stores. Recognition quality depends on the underlying parser and whether the input contains enough product information. The project reports recognition of the same model as GunsNPrices.com in 99.97% of applicable listings, with caliber identified in 97.8% of firearm titles and 94.9% of ammunition titles where a caliber is found.

The code uses the MIT License. Page-link data in src/data/ is under CC BY 4.0 and requires credit to GunsNPrices with a link when reused.

Read the full README View source on GitHub

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Frequently Asked Questions about GunsNPrices

GunsNPrices is an MCP server that connects AI assistants to local parsing data and GunsNPrices comparison-page links for US gun and ammunition shopping. Its main tools parse product titles, identify firearm models, normalize calibers, calculate cost per round, find comparison pages, and list supported brands and calibers. It runs over stdio without an API key.

Install it with Node.js 18 or newer by running `npx -y gunsnprices-mcp`. You can register that command in Claude Code, Claude Desktop, Cursor, or VS Code, or build and run the provided Docker image.

Yes, GunsNPrices works with Cursor through its stdio MCP configuration. Add a server entry using `npx` as the command and `-y gunsnprices-mcp` as the arguments in `~/.cursor/mcp.json`.

No, GunsNPrices does not fetch live prices. It returns links to GunsNPrices pages that compare prices across more than 40 US gun and ammunition stores, which the user or assistant can open separately.

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