# 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 - Trust score: 40/100 (low) - Registry status: active - Liveness: live - Owner verified: no - Last scored: 2026-11-05 ## Components - npm · `@keiya-dev/japan-used-market-mcp`: 40/100 (this document), [markdown](https://verifymcp.io/servers/enu27-japan-used-market/keiya-dev-japan-used-market-mcp.md), [page](https://verifymcp.io/servers/enu27-japan-used-market/keiya-dev-japan-used-market-mcp) ## Channel facts - Registry: `npm` - Package: `@keiya-dev/japan-used-market-mcp` - Version: `0.5.1` - 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 2026-11-05. - **Supply Chain Security**: 13/100 - Malware scan not yet available for this package. - Known CVEs could not be checked: the version this server declares is not published in its registry. - No install/post-install scripts declared. - Dependency health could not be checked: the version this server declares is not published in its registry. - **Provenance & Transparency**: 45/100 - Source repository is publicly reachable at the declared URL. - Provenance check failed: no build-provenance attestation is published. - Clear OSI-approved license (MIT). - Actively maintained (last published 0 days ago). - Disclosure check failed: no security disclosure policy was found in the source repository. - **Schema Quality & AI Usability**: 52/100 - AI-judged instruction clarity (good). - 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. - Usage-examples check failed: none of the tools include examples. - **Stability & Change Management**: 3/100 - Stability observed for 1 of 30 days with no destabilising changes; credit accrues until the full window elapses. - **Tool Coverage**: 92/100 - 100% of tools have a non-trivial description (not blank, and not just the tool's name). - 76% 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 5 captured tool definition(s), and no name or description among them implies an irreversible operation. - An AI judge read all 5 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. ## Install ### 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. ### Claude ```bash claude mcp add enu27-japan-used-market -- npx -y @keiya-dev/japan-used-market-mcp ``` ### Cursor ```json { "mcpServers": { "enu27-japan-used-market": { "command": "npx", "args": [ "-y", "@keiya-dev/japan-used-market-mcp" ] } } } ``` ### VS Code ```json { "servers": { "enu27-japan-used-market": { "command": "npx", "args": [ "-y", "@keiya-dev/japan-used-market-mcp" ] } } } ``` ### Codex ```bash codex mcp add enu27-japan-used-market -- npx -y @keiya-dev/japan-used-market-mcp ``` ### opencode ```json { "$schema": "https://opencode.ai/config.json", "mcp": { "enu27-japan-used-market": { "type": "local", "command": [ "npx", "-y", "@keiya-dev/japan-used-market-mcp" ], "enabled": true } } } ``` ### OpenClaw ```bash openclaw mcp add enu27-japan-used-market --command npx --arg -y --arg @keiya-dev/japan-used-market-mcp ``` ### Hermes ```yaml mcp_servers: enu27-japan-used-market: command: "npx" args: ["-y", "@keiya-dev/japan-used-market-mcp"] ``` ### Netclaw ```json { "McpServers": { "enu27-japan-used-market": { "Transport": "stdio", "Command": "npx", "Arguments": [ "-y", "@keiya-dev/japan-used-market-mcp" ] } } } ``` ### Vellum ```bash assistant mcp add enu27-japan-used-market -t stdio -c npx -a -y @keiya-dev/japan-used-market-mcp ``` ### Other ```json { "mcpServers": { "enu27-japan-used-market": { "command": "npx", "args": [ "-y", "@keiya-dev/japan-used-market-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. ### 2026-11-05 (score 40, −15) - [security regression] CVE-2023-54404 affects this package: high - [security regression] Known CVEs: unverified → fail - [security regression] Malware scan: pass → unverified - [functional regression] Schema quality: 451 → 576 - [functional regression] Schema quality: 451 → 555 - [functional improvement] Dependency health: unverified → 0.85 - [functional] Package version: 0.4.0 → 0.5.1 - [functional] Package version: 0.4.0 → 0.5.0 ### 2026-11-04 (score 55) First indexed and scored. ## MCP tools (5) ### `list_markets` (~67 tokens) List markets, shops and grades 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. ### `search_listings` (~740 tokens) Search used listings in Japan 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. Input parameters: - `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… ### `price_stats` (~614 tokens) Current price stats per model 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). Input parameters: - `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… ### `price_history` (~743 tokens) Daily price history per model 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. Input parameters: - `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… ### `start_monitor` (~717 tokens) Start a change monitor (scheduled) 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. Input parameters: - `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, required): 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) ## Diagnostics Captured diagnostic sections: Provenance. The full working is on the page: https://verifymcp.io/servers/enu27-japan-used-market/keiya-dev-japan-used-market-mcp#diagnostics ## Score history - 2026-11-05: 40 - 2026-11-04: 55 ## Common questions ### 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. ### What did VerifyMCP test on the Japan Used Market (cameras, watches, guitars, trains) MCP server? VerifyMCP ran 13 checks on Japan Used Market (cameras, watches, guitars, trains), covering Install scripts, Source repository, Provenance, License and 9 more. 3 items could not be completed, a gap on our side rather than a finding about Japan Used Market (cameras, watches, guitars, trains): Malware scan, Known CVEs and Dependency health. Endpoint Security and Transport & Reachability do not apply to an npm package, so they were not tested. The score does not measure everything, and the scoring documentation lists what it leaves out. ## Links - npm package: https://www.npmjs.com/package/@keiya-dev/japan-used-market-mcp - Socket report: https://socket.dev/npm/package/@keiya-dev/japan-used-market-mcp - Repository: https://github.com/Enu27/japan-used-market-mcp - Changelog RSS feed: https://verifymcp.io/servers/enu27-japan-used-market/keiya-dev-japan-used-market-mcp.xml - Changelog JSON feed: https://verifymcp.io/servers/enu27-japan-used-market/keiya-dev-japan-used-market-mcp/changelog.json - Trust report (JSON): https://verifymcp.io/servers/enu27-japan-used-market/keiya-dev-japan-used-market-mcp.json - HTML version of this page: https://verifymcp.io/servers/enu27-japan-used-market/keiya-dev-japan-used-market-mcp