Get your USS CIS auction data through an API

What you can build on CIS

• Search listed vehicles

  Build this

  Runs a 下見検索 (preview search) across USS and partner venues by maker, model and body type, and reads each lot with its photos and 出品票 (auction sheet).

  Takes

  Maker, model, body type (optional), venue (optional), auction date (optional)

  Returns

  Venue, auction date, lot number, maker, model, grade, year, mileage, score, photo links, auction sheet link

• Look up past sale prices

  Build this

  Runs a 相場検索 (market price search) over the past 12 auctions for one model and reads each result with its price.

  Takes

  Maker, model, year from (optional), year to (optional)

  Returns

  Venue, auction date, lot number, grade, year, mileage, score, result, price

• Get my auction schedule

  Build this

  Reads the MYスケジュール (my schedule) page: your own listed vehicles and your お気に入り (favourites), in the order they come up at auction.

  Takes

  Auction date

  Returns

  Venue, lot number, maker, model, scheduled time, own listing or favourite

• Place a 指値 bid on a lot

  Build this

  Opens one lot and enters a 指値 (pre-set bid) for the amount you give, before the auction starts.

  Takes

  Venue, auction date, lot number, bid amount

  Returns

  Venue, lot number, bid amount, confirmation status

Automate CIS with a workflow

A workflow runs your methods as one process, with nobody at the screen. A schedule or a call from your own system starts it, the steps run in order, and the result arrives in your inbox or in the systems you already use.

• New lots for the models you buy, every morning

  Build this

  Starts

  Every day at 7:00 Japan time

  Step 1

  For each maker and model you name, search the listed vehicles for the coming auctions.

  Step 2

  Keep the lots that were not there on the last run.

  Step 3

  Email you the list, one section per model, with score, mileage and the auction sheet link.

• Weekly 相場 report for the models you buy

  Build this

  Starts

  Every Monday at 8:00 Japan time

  Step 1

  For each model on your list, look up past sale prices from the past 12 auctions.

  Step 2

  Have an AI step group them by year and score, with the lowest, median and highest price.

  Step 3

  Email you the report.

• Matching lots for a customer request, sent to your system

  Build this

  Starts

  When your system calls the workflow's webhook with a maker, model, years and mileage

  Step 1

  Search the listed vehicles for that maker and model.

  Step 2

  Keep the lots inside the year range and under the mileage given.

  Step 3

  Post the lots, with their auction sheet links, to your system's webhook.

You can run a workflow by hand on every plan, Free included. Schedules and webhook triggers come with the paid plans, from $29 a month.

Once built, one call from your code

Once you have built a method, it is one POST to /v1/runs from your backend, or a tool an AI agent calls over MCP. This is what “Search listed vehicles” would look like.

curl https://api.fous.com/v1/runs \
  -H "Authorization: Bearer $FOUS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "method": "ssl.cis6200.jp/search_listed_vehicles",
    "input": {
      "maker": "Toyota",
      "model": "Prius",
      "auction_date": "2026-11-14"
    }
  }'

{
  "status": "completed",
  "data": {
    "lots": [
      {
        "venue": "USS Tokyo",
        "auction_date": "2026-11-14",
        "lot_number": "40217",
        "maker": "Toyota",
        "model": "Prius",
        "grade": "S",
        "year": 2021,
        "mileage_km": 48200,
        "score": "4.5",
        "photos": "https://example.com/lots/40217/photos",
        "auction_sheet": "https://example.com/sheets/40217.jpg"
      }
    ]
  }
}

An example with invented data, not a ready-made endpoint. The method exists in your organization once you build it, and its name, inputs and fields follow your request.

CIS’s own options

USS's CIS service guide describes no API for members. CIS is used on a computer with a USB security key, or as Smart CIS on a phone or tablet. USS Engine, a free portal for USS members, shows the venue 出品リスト (stock list) as a PDF, your own trades and your 精算書 (settlement statements).

Read on November 12, 2026: CIS service guide: functions, CIS fees and how to join, USS Engine.

Signing in to CIS

CIS on a computer signs you in with your 会員番号 (member number) and password while the USB認証キー (USB authentication key) is inserted in the PC. Smart CIS on a phone or tablet needs no USB key. With Fous you sign in through CIS's own sign-in with your own account, and the login is sealed with AES-256, never returned by the API or written to logs.

Worth knowing

Each member ID has its own USB key

The CIS rules issue every member ID, including each additional ID, with its own password and USB authentication key. Plan one account per person or desk that works in CIS.

相場 covers the past 12 auctions

The market price search in CIS and Smart CIS shows results from the past 12 auctions. Keep your own history if you need prices from further back.

Stock lists appear the day before

USS Engine shows the 出品リスト from the day before each auction. CIS shows a vehicle as soon as the venue registers it, with photos and the 出品票.

Bids are capped and charged per vehicle

A live bid cannot exceed the 落札限度額 (bid limit) the auction company sets for you. A 指値 costs 1,000 yen per vehicle and a win 17,000 yen per vehicle, before tax.

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