# GunsNPrices (npm · gunsnprices-mcp)

Parse gun and ammo titles (model, caliber, cost per round); find GunsNPrices price comparison pages

- Trust score: 67/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-10-18

## Components

- npm · `gunsnprices-mcp`: 67/100 (this document), [markdown](https://verifymcp.io/servers/gunsnprices-gunsnprices-mcp/gunsnprices-mcp.md), [page](https://verifymcp.io/servers/gunsnprices-gunsnprices-mcp/gunsnprices-mcp)

## Channel facts

- Registry: `npm`
- Package: `gunsnprices-mcp`
- Version: `0.1.1`
- Transport: `stdio`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-10-18.

- **Supply Chain Security**: 98/100
  - No malware found by supply-chain analysis.
  - No known CVEs affecting this package version or its production dependencies.
  - No install/post-install scripts declared.
  - 31 of 94 dependencies flagged as unhealthy.
- **Provenance & Transparency**: 32/100
  - Source repository is publicly reachable at the declared URL.
  - Provenance check failed: no build-provenance attestation is published.
  - License check failed: the license ((MIT AND CC-BY-4.0)) isn't a recognized OSI-approved license.
  - Actively maintained (last published 4 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 73/100
  - AI-judged instruction clarity (good).
  - Context-footprint check failed: tool/resource definitions use about 785 tokens (~130/item across 6 items; 6 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 0/100
  - Stability not yet verified: not enough scan history yet (needs a 30-day window).
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 6 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 7 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

**Unverified: 1 category.** A category scored 0 because we could not verify it: a data source with nothing on this package, evidence we could not reach, or a check we could not run. We only credit what we can confirm.

## Install

### How do I install the GunsNPrices MCP server?

GunsNPrices runs locally as an npm package, launched with npx -y gunsnprices-mcp. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add gunsnprices-gunsnprices-mcp -- npx -y gunsnprices-mcp
```

### Cursor

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

### VS Code

```json
{
  "servers": {
    "gunsnprices-gunsnprices-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "gunsnprices-mcp"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add gunsnprices-gunsnprices-mcp -- npx -y gunsnprices-mcp
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "gunsnprices-gunsnprices-mcp": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "gunsnprices-mcp"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add gunsnprices-gunsnprices-mcp --command npx --arg -y --arg gunsnprices-mcp
```

### Hermes

```yaml
mcp_servers:
  gunsnprices-gunsnprices-mcp:
    command: "npx"
    args: ["-y", "gunsnprices-mcp"]
```

### Netclaw

```json
{
  "McpServers": {
    "gunsnprices-gunsnprices-mcp": {
      "Transport": "stdio",
      "Command": "npx",
      "Arguments": [
        "-y",
        "gunsnprices-mcp"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add gunsnprices-gunsnprices-mcp -t stdio -c npx -a -y gunsnprices-mcp
```

### Other

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

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-10-14 (score 67, +31)

- [security improvement] Injection markers: unverified → pass
- [security] First check of Judged manipulation: pass
- [security] Stability: Stability not yet verified: not enough scan history yet (needs a 30-day window).
- [functional improvement] Tool coverage: unverified → 100
- [functional improvement] MCP protocol: unverified → pass
- [functional] First check of Schema quality: fail
- [functional] First check of Destructive annotations: pass
- [functional] First check of Schema quality: fail
- [functional] First check of Schema quality: good
- [functional] First check of Tool coverage: 100

### 2026-10-13 (score 36, 0)

- [functional] Package version: 0.1.0 → 0.1.1

### 2026-10-12 (score 36)

First indexed and scored.

## MCP tools (6)

### `parse_product_title` (~157 tokens)

Parse a gun or ammo product title

Parse a firearm or ammunition product title from any store into structured data: firearm or ammo, brand, model (50 brands, e.g. 'Glock 19 Gen 5 MOS'), calibers, magazine capacity, barrel length in inches, rounds per box and, with a price, cost per round. Also returns GunsNPrices pages to compare current prices.

Input parameters:

- `brand` (string): Manufacturer, if known (helps when the title doesn't name it)
- `price` (number): Listing price in USD; for ammo it gives cost per round
- `title` (string, required): Product title as a store shows it, e.g. 'Glock 19 Gen5 MOS 9mm 4.02in 15rd'

### `identify_firearm_model` (~157 tokens)

Identify a firearm model

Identify the brand, model family and exact model of a firearm from a title or a short description (e.g. 'G19 Gen5 MOS', 'Sig P365 XL', 'S&W M&P Shield Plus'). Covers 50 brands including Glock, Sig Sauer, Smith & Wesson, Ruger, Springfield, Beretta, Taurus, Mossberg, Remington, Savage and Henry. Glock part numbers (e.g. PA195S203) are decoded too. Returns GunsNPrices pages for the model, its family and the brand.

Input parameters:

- `brand` (string): Manufacturer, if known
- `mpn` (string): Manufacturer part number, if known
- `title` (string, required): Firearm title or description

### `lookup_caliber` (~103 tokens)

Look up a caliber

Normalize a caliber or cartridge name ('9mm Luger', '5.56 NATO', '300 BLK', '12ga', '6.5 CM') or find every caliber mentioned in a text. Returns the standard name, type (handgun, rifle, rimfire, shotgun, airgun, muzzleloader) and the GunsNPrices page comparing ammo prices for it.

Input parameters:

- `query` (string, required): Caliber name or any text that mentions calibers

### `cost_per_round` (~102 tokens)

Ammo cost per round

Compute the cost per round of an ammo listing from its price and round count. If the round count is not given, it is read from the title ('50/Box', '1,000 Rounds', 'Box of 20', '20/25').

Input parameters:

- `price` (number, required): Price in USD
- `rounds` (integer): Rounds in the package
- `title` (string): Ammo title, used to read the round count and caliber

### `find_price_comparison_pages` (~108 tokens)

Find GunsNPrices price comparison pages

Find GunsNPrices pages that compare current prices across 40+ US gun and ammo stores for a firearm model, brand or caliber, e.g. 'Glock 19', 'Sig Sauer P365', 'Ruger', '9mm ammo', '6.5 Creedmoor'. Use it when the user asks where to buy a gun or ammo, or where it is cheapest. Returns the most specific pages first.

Input parameters:

- `query` (string, required): Model, brand or caliber

### `list_supported` (~56 tokens)

List supported brands or calibers

List the 50 firearm brands with model recognition, or the 293 known calibers (optionally of one type).

Input parameters:

- `caliber_type` (string): Only calibers of this type
- `what` (string, required): What to list

## Diagnostics

Captured diagnostic sections: Provenance, Dependencies. The full working is on the page: https://verifymcp.io/servers/gunsnprices-gunsnprices-mcp/gunsnprices-mcp#diagnostics

## Score history

- 2026-10-18: 67
- 2026-10-17: 67
- 2026-10-16: 67
- 2026-10-15: 67
- 2026-10-14: 67
- 2026-10-13: 36
- 2026-10-12: 36

## Common questions

### What is the GunsNPrices MCP server?

GunsNPrices is an MCP server listed in the public MCP registry as io.github.gunsnprices/gunsnprices-mcp. Parse gun and ammo titles (model, caliber, cost per round); find GunsNPrices price comparison pages. This page covers its npm package (gunsnprices-mcp).

### Is the GunsNPrices MCP server safe to use?

GunsNPrices scores 67 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 18 October 2026. It declares no install or post-install scripts. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the GunsNPrices MCP server expose?

GunsNPrices exposes 6 tools: parse_product_title, identify_firearm_model, lookup_caliber, cost_per_round, find_price_comparison_pages, list_supported. Their descriptions and schemas cost roughly 683 tokens of context every time the server is loaded.

### Is the GunsNPrices MCP server still maintained?

GunsNPrices is still listed as active in the MCP registry. We last reached this channel on 18 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- npm package: https://www.npmjs.com/package/gunsnprices-mcp
- Socket report: https://socket.dev/npm/package/gunsnprices-mcp
- Repository: https://github.com/gunsnprices/gunsnprices-mcp
- Website: https://gunsnprices.com/
- Changelog RSS feed: https://verifymcp.io/servers/gunsnprices-gunsnprices-mcp/gunsnprices-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/gunsnprices-gunsnprices-mcp/gunsnprices-mcp.json
- HTML version of this page: https://verifymcp.io/servers/gunsnprices-gunsnprices-mcp/gunsnprices-mcp