AI 产品解读Display used car price history charts and market trend data directly on carsensor.net car listing and detail pages
Used car buyers and dealers cannot easily see price fluctuations over time for specific vehicles on carsensor.net. This extension overlays historical price trend charts onto car listings, helping users assess whether a car's current price is fair based on historical data.
1. User installs extension and browses carsensor.net normally. 2. On search result pages, the extension injects price history line chart images (from nedukekun.com) for each listed car. 3. On individual car detail pages, the extension adds interactive charts showing price trends, grade distribution, and market analysis using Chart.js. 4. The extension also displays banner ads promoting the related paid product 'くるま値付けくん'. 5. No login or account setup is required to see the charts.
Price history line charts embedded on carsensor.net search result listings and car detail pagesPast contract/transaction analysis charts showing grade distribution (pie chart) and color distributionFair price scoring system (Platinum/Gold/Silver/Bronze tiers) based on market ratio analysisMoving average price calculations over configurable periodsMarket supply day analysis (inventory aging distribution)Advertisement integration for the related paid product 'くるま値付けくん'
- 目标用户
- Used car dealers and salespeople browsing carsensor.net / Individual used car buyers researching fair market prices on carsensor.net / Japanese market participants interested in vehicle price trend analysis
- The extension heavily depends on external services (nedukekun.com for chart images, carsensor-vision.appspot.com for API data, store-can.appspot.com for ads) whose server-side behavior could not be fully inspected
- The ucarChart.js file (1125 lines) was only partially read; it contains the interactive chart rendering logic but may have additional features not captured
- Some features referenced in sworker.js (auth, fetchBukken, updateMemo, updatePurchasePrice) appear designed for the related paid product 'くるま値付けくん' but their full integration path could not be traced
付费分析未识别到付费功能
The extension itself is free and does not gate any features behind payment. It displays price history charts and ads on carsensor.net for all users. The store description explicitly states '有料版のくるま値付けくんの製品紹介動画が検索結果に表示されます' — this confirms the extension promotes a SEPARATE paid product called 'くるま値付けくん' (via banners linking to nedukekun-lp.com and embedded iframes from store-can.appspot.com), but does not itself have paid features. The hardcoded token in config.js is an API authentication token for the backend service, not a user payment token. No subscription, billing, upgrade, or payment UI exists in the extension.
- 置信度
- 85
- 支付平台
- --
- 来源
- AI / 中
- 需要登录
- 否
- 登录理由
- The extension's core workflow — displaying used car price history charts on carsensor.net — works without any login. Images are loaded from nedukekun.com using only the car ID (carsensorId) and a locally-generated anonymous UID. While sworker.js contains an auth function (line 765) that accepts shopId/kokyakuCd and calls an API auth endpoint, this is only triggered when a 'auth' message is sent from content scripts. The main.js content script never sends this auth message; it only calls getConfig and getAd. The auth/shopId features appear to be vestigial code from the related paid product 'くるま値付けくん' rather than required for this extension's free functionality.
