Japan Used Market (cameras, watches, guitars, trains)
NPM · @KEIYA-DEV/JAPAN-USED-MARKET-MCP
Search, price stats, history and alerts for Japan's used camera, watch, guitar and model-train shops
Available components
Last scanned (1 hour ago)
Scores higher than 21% 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 Security13
- Malware scan not yet available for this package.Unverified
- Known CVEs could not be checked: the version this server declares is not published in its registry.Unverified
- No install/post-install scripts declared.Pass
- Dependency health could not be checked: the version this server declares is not published in its registry.Unverified
Provenance & Transparency45
- 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
- Clear OSI-approved license (MIT).Pass
- Actively maintained (last published 0 days ago).Pass
- Disclosure check failed: no security disclosure policy was found in the source repository. See how to fix → Fail
Schema Quality & AI Usability52
- AI-judged instruction clarity (good).Pass
- Context-footprint check failed: tool/resource definitions use about 2881 tokens (~576/item across 5 items; 5 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 Management3
- Stability observed for 1 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage92
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 76% of tool parameters carry a description.Partial
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 5 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 5 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
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.
- 5 Nov 26 −15
- CVE-2023-54404 affects this package: high ▼ security
- Known CVEs: unverified → fail ▼ security
- Malware scan: pass → unverified ▼ security
- Schema quality: 451 → 576 ▼ functional
- Schema quality: 451 → 555 ▼ functional
- Dependency health: unverified → 0.85 ▲ functional
- Package version: 0.4.0 → 0.5.1 functional
- Package version: 0.4.0 → 0.5.0 functional
- 4 Nov 26 55
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 5 Nov 2026 · Analysed npm/@keiya-dev/japan-used-market-mcp@0.5.1
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 →
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 →
list_markets List markets, shops and grades ~67
Lists the markets this server covers (used cameras, used watches, used musical instruments, used model trains) with each market's shop ids, condition grades (best to worst), price-history coverage and example keywords. Free and instant — call it first when unsure which sources / grades are valid.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
price_history Daily price history per model ~743
Daily min / median / max / count per model, by shop and condition grade, from stored snapshots of the shops (camera: Daily since 2026-11-05 for fujiya, sanpou, naniwa; hardoff weekly (Sundays). watch: Daily since 2026-11-05 for watchnian, rasin, jackroad; offmall weekly (Sundays). instrument: Daily since 2026-11-05 for shimokura, ishibashi, shimamura, ikebe; jguitar and offmall weekly (Sundays). model-train: Daily since 2026-11-05 for pochi; offmall weekly (Sundays). The first month is short). No crawling — returns in seconds. Needs keywords, brands or models.
| Name | Type | Req | Description |
|---|---|---|---|
| brands | array | – | Exact brand names, e.g. ["Leica", "Nikon"], ["Rolex", "Grand Seiko"] ["Fender Japan", "Gibson"] (instruments: Fender is split into Fender Japan / Fender USA / Fender Mexico / Fender) or ["KATO", "TOM… |
| days | integer | – | Days back from today (Japan time). |
| grades | array | – | Normalized condition grades of the chosen market, best to worst. camera: NEW > A > AB+ > AB > AB- > B > ASIS (as is) > PARTS; watch: NEW > UNUSED > SA (like new) > A > AB > B > C > JUNK (not working)… |
| keywords | array | – | Match any of these in brand + title (case-insensitive, English or Japanese; watches, instruments and model trains also match reference / model / product codes), e.g. ["Leica M6"], ["Grand Seiko", "SB… |
| market | string | – | Which market: "camera" (used cameras and lenses) or "watch" (used wristwatches) or "instrument" (used guitars, basses and wind instruments) or "model-train" (used model trains (n, ho)). Default "came… |
| maxPriceJpy | integer | – | – |
| minPriceJpy | integer | – | – |
| models | array | – | Exact model keys as returned by price_stats ("model" field), e.g. ["leica m6", "nikon zf"], ["grand seiko sbga211"] or ["fender japan jb62-58"]. |
| sources | array | – | Shops of the chosen market (default: all of them). camera: fujiya, sanpou, naniwa, hardoff; watch: watchnian, rasin, jackroad, offmall; instrument: shimokura, jguitar, ishibashi, shimamura, ikebe, of… |
No output schema declared.
No examples provided.
price_stats Current price stats per model ~614
Per-model price summary of in-stock listings right now: count and min / median / max (JPY and USD), broken down by shop and by normalized condition grade, plus the cheapest listing. Watches are grouped by brand + reference number, instruments by brand + model code, model trains by maker + product code. Use keywords to stay fast (~1–4 min).
| Name | Type | Req | Description |
|---|---|---|---|
| brands | array | – | Exact brand names, e.g. ["Leica", "Nikon"], ["Rolex", "Grand Seiko"] ["Fender Japan", "Gibson"] (instruments: Fender is split into Fender Japan / Fender USA / Fender Mexico / Fender) or ["KATO", "TOM… |
| grades | array | – | Normalized condition grades of the chosen market, best to worst. camera: NEW > A > AB+ > AB > AB- > B > ASIS (as is) > PARTS; watch: NEW > UNUSED > SA (like new) > A > AB > B > C > JUNK (not working)… |
| keywords | array | – | Match any of these in brand + title (case-insensitive, English or Japanese; watches, instruments and model trains also match reference / model / product codes), e.g. ["Leica M6"], ["Grand Seiko", "SB… |
| market | string | – | Which market: "camera" (used cameras and lenses) or "watch" (used wristwatches) or "instrument" (used guitars, basses and wind instruments) or "model-train" (used model trains (n, ho)). Default "came… |
| maxItems | integer | – | Listings to read before summarizing (0 = all; a full read of every shop can take 5–30 min). |
| maxPriceJpy | integer | – | – |
| minPriceJpy | integer | – | – |
| sources | array | – | Shops of the chosen market (default: all of them). camera: fujiya, sanpou, naniwa, hardoff; watch: watchnian, rasin, jackroad, offmall; instrument: shimokura, jguitar, ishibashi, shimamura, ikebe, of… |
No output schema declared.
No examples provided.
search_listings Search used listings in Japan ~740
Search current used listings at Japanese shops — cameras / lenses (Fujiya Camera, Sanpou Camera, Naniwa new arrivals, Hard Off Off Mall) or wristwatches (WATCHNIAN, Hard Off Off Mall) or guitars / basses / wind instruments (Shimokura Gakki, Hard Off Off Mall) or N / HO model trains (Hobbyland Pochi, Hard Off Off Mall). Returns title, brand, normalized condition grade, price in JPY and USD, stock status and URL; watches add reference number, gender and box / warranty card (WATCHNIAN); instruments add model code, instrument type, country of manufacture (madeIn), production year / era, case, Reverb condition name and store; model trains add maker product code, scale (N / HO / Z), set type (set / add-on / single), motorized flag, case / manual / sleeve and lot year. Takes ~15–60 s.
| Name | Type | Req | Description |
|---|---|---|---|
| brands | array | – | Exact brand names, e.g. ["Leica", "Nikon"], ["Rolex", "Grand Seiko"] ["Fender Japan", "Gibson"] (instruments: Fender is split into Fender Japan / Fender USA / Fender Mexico / Fender) or ["KATO", "TOM… |
| grades | array | – | Normalized condition grades of the chosen market, best to worst. camera: NEW > A > AB+ > AB > AB- > B > ASIS (as is) > PARTS; watch: NEW > UNUSED > SA (like new) > A > AB > B > C > JUNK (not working)… |
| includeSoldOut | boolean | – | Also return listings marked sold out. |
| keywords | array | – | Match any of these in brand + title (case-insensitive, English or Japanese; watches, instruments and model trains also match reference / model / product codes), e.g. ["Leica M6"], ["Grand Seiko", "SB… |
| market | string | – | Which market: "camera" (used cameras and lenses) or "watch" (used wristwatches) or "instrument" (used guitars, basses and wind instruments) or "model-train" (used model trains (n, ho)). Default "came… |
| maxItems | integer | – | Stop after this many matching listings (1–200). |
| maxPriceJpy | integer | – | – |
| minPriceJpy | integer | – | – |
| sources | array | – | Shops of the chosen market (default: all of them). camera: fujiya, sanpou, naniwa, hardoff; watch: watchnian, rasin, jackroad, offmall; instrument: shimokura, jguitar, ishibashi, shimamura, ikebe, of… |
No output schema declared.
No examples provided.
start_monitor Start a change monitor (scheduled) ~717
Creates, in the user's own Apify account, a saved Task running the market's Actor in monitor mode and a Schedule for it (hourly by default), then starts the first run to record the baseline. Later runs emit only changes (NEW / PRICE_DROP / PRICE_UP / SOLD_OUT) and can POST them to a Slack / Discord / n8n webhook. This creates resources and recurring runs that use the user's Apify credit — confirm with the user first.
| Name | Type | Req | Description |
|---|---|---|---|
| alertEvents | array | – | Event types to output and send. Default: NEW and PRICE_DROP. |
| alertWebhookUrl | string | – | Slack / Discord incoming webhook or any URL that accepts a JSON POST. |
| brands | array | – | Exact brand names, e.g. ["Leica", "Nikon"], ["Rolex", "Grand Seiko"] ["Fender Japan", "Gibson"] (instruments: Fender is split into Fender Japan / Fender USA / Fender Mexico / Fender) or ["KATO", "TOM… |
| cron | string | – | Cron expression for the Schedule (default hourly). Please not more often than every 15 minutes. |
| grades | array | – | Normalized condition grades of the chosen market, best to worst. camera: NEW > A > AB+ > AB > AB- > B > ASIS (as is) > PARTS; watch: NEW > UNUSED > SA (like new) > A > AB > B > C > JUNK (not working)… |
| keywords | array | – | Match any of these in brand + title (case-insensitive, English or Japanese; watches, instruments and model trains also match reference / model / product codes), e.g. ["Leica M6"], ["Grand Seiko", "SB… |
| market | string | – | Which market: "camera" (used cameras and lenses) or "watch" (used wristwatches) or "instrument" (used guitars, basses and wind instruments) or "model-train" (used model trains (n, ho)). Default "came… |
| maxPriceJpy | integer | – | – |
| minPriceJpy | integer | – | – |
| name | string | yes | Short id for the Task and Schedule, lowercase letters, digits and dashes, e.g. "leica-m-watch" or "gs-sbga211". |
| sources | array | – | Shops of the chosen market (default: all of them). camera: fujiya, sanpou, naniwa, hardoff; watch: watchnian, rasin, jackroad, offmall; instrument: shimokura, jguitar, ishibashi, shimamura, ikebe, of… |
| timezone | string | – | – |
No output schema declared.
No examples provided.
How do I install the Japan Used Market (cameras, watches, guitars, trains) MCP server?
Japan Used Market (cameras, watches, guitars, trains) runs locally as an npm package, launched with npx -y @keiya-dev/japan-used-market-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 · @keiya-dev/japan-used-market-mcp
claude mcp add enu27-japan-used-market -- npx -y @keiya-dev/japan-used-market-mcp
What is the Japan Used Market (cameras, watches, guitars, trains) MCP server?
Japan Used Market (cameras, watches, guitars, trains) is an MCP server listed in the public MCP registry as io.github.Enu27/japan-used-market. Search, price stats, history and alerts for Japan's used camera, watch, guitar and model-train shops. This page covers its npm package (@keiya-dev/japan-used-market-mcp).
Is the Japan Used Market (cameras, watches, guitars, trains) MCP server safe to use?
Japan Used Market (cameras, watches, guitars, trains) scores 40 out of 100 on VerifyMCP. 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 Japan Used Market (cameras, watches, guitars, trains) MCP server expose?
Japan Used Market (cameras, watches, guitars, trains) exposes 5 tools: list_markets, search_listings, price_stats, price_history, start_monitor. Their descriptions and schemas cost roughly 2,881 tokens of context every time the server is loaded.
Is the Japan Used Market (cameras, watches, guitars, trains) MCP server still maintained?
Japan Used Market (cameras, watches, guitars, trains) is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.
What licence is the Japan Used Market (cameras, watches, guitars, trains) MCP server under?
Japan Used Market (cameras, watches, guitars, trains) declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.