GunsNPrices
NPM · GUNSNPRICES-MCP
Parse gun and ammo titles (model, caliber, cost per round); find GunsNPrices price comparison pages
Available components
Last scanned (5 hours ago)
Scores higher than 38% of npm servers
Category E-commerce
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. How we score → Why this is hard to score →
Supply Chain Security98
- No malware found by supply-chain analysis.Pass
- No known CVEs affecting this package version or its production dependencies.Pass
- No install/post-install scripts declared.Pass
- 31 of 94 dependencies flagged as unhealthy. View diagnostics → Partial
Provenance & Transparency32
- Source repository is publicly reachable at the declared URL. View diagnostics → Pass
- Provenance check failed: no build-provenance attestation is published. See how to fix → View diagnostics → Fail
- License check failed: the license ((MIT AND CC-BY-4.0)) isn't a recognized OSI-approved license. See how to fix → Fail
- Actively maintained (last published 4 days ago).Pass
- Disclosure check failed: no security disclosure policy was found in the source repository. See how to fix → Fail
Schema Quality & AI Usability73
- AI-judged instruction clarity (good).Pass
- 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. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management0
- Stability not yet verified: not enough scan history yet (needs a 30-day window).Unverified
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 6 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 7 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
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.
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 14 Oct 26 +31
- 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). security
- Tool coverage: unverified → 100 ▲ functional
- 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 functional
- 13 Oct 26 0
- Package version: 0.1.0 → 0.1.1 functional
- 12 Oct 26 36
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 18 Oct 2026 · Analysed npm/gunsnprices-mcp@0.1.1
Provenance No attestation
The registry publishes no build provenance for this version, so there is nothing to verify.
| Result | No attestation |
|---|---|
| Ecosystem | npm |
Background: How many MCP packages publish verified provenance →
Dependencies 94 packages
| Packages resolved | 94 |
|---|---|
| Stale | 31 |
| Tree resolution | Complete |
Background: SBOMs and build attestations, explained →
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
cost_per_round Ammo cost per round ~102
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').
| Name | Type | Req | Description |
|---|---|---|---|
| price | number | yes | Price in USD |
| rounds | integer | – | Rounds in the package |
| title | string | – | Ammo title, used to read the round count and caliber |
No output schema declared.
No examples provided.
find_price_comparison_pages Find GunsNPrices price comparison pages ~108
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.
| Name | Type | Req | Description |
|---|---|---|---|
| query | string | yes | Model, brand or caliber |
No output schema declared.
No examples provided.
identify_firearm_model Identify a firearm model ~157
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.
| Name | Type | Req | Description |
|---|---|---|---|
| brand | string | – | Manufacturer, if known |
| mpn | string | – | Manufacturer part number, if known |
| title | string | yes | Firearm title or description |
No output schema declared.
No examples provided.
list_supported List supported brands or calibers ~56
List the 50 firearm brands with model recognition, or the 293 known calibers (optionally of one type).
| Name | Type | Req | Description |
|---|---|---|---|
| caliber_type | string | – | Only calibers of this type |
| what | string | yes | What to list |
No output schema declared.
No examples provided.
lookup_caliber Look up a caliber ~103
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.
| Name | Type | Req | Description |
|---|---|---|---|
| query | string | yes | Caliber name or any text that mentions calibers |
No output schema declared.
No examples provided.
parse_product_title Parse a gun or ammo product title ~157
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.
| Name | Type | Req | Description |
|---|---|---|---|
| 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 | yes | Product title as a store shows it, e.g. 'Glock 19 Gen5 MOS 9mm 4.02in 15rd' |
No output schema declared.
No examples provided.
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.
npm · gunsnprices-mcp
claude mcp add gunsnprices-gunsnprices-mcp -- npx -y gunsnprices-mcp
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.