# Get your B2クラウド waybills through an API

> Read the 伝票番号 (slip number), お届け先名 (recipient) and 荷物状況 (parcel status) of your issued waybills in B2クラウド from your own code. A workflow can hand the day's slip numbers to your order system every evening.

Page: https://fous.com/automate/yamato-b2-cloud
Updated: 2026-11-12

Works with your own B2クラウド account. Fous is an independent product.

## What you can build on B2クラウド

### Get issued waybills

Searches 発行済データの検索 (search issued data) for a range of planned ship dates and reads the 検索結果 (search results).

- Takes: Ship date from, ship date to, recipient name (optional)
- Returns: Slip number, waybill type, planned ship date, recipient name, recipient address, customer reference

### Check parcel status for issued waybills

Selects issued waybills in 発行済データの検索 and runs 荷物のお問い合わせ (parcel inquiry) to read each one's 荷物状況.

- Takes: Ship date from, ship date to
- Returns: Slip number, recipient name, parcel status, shipment date, parcel size

### Save a waybill to issue later

Enters one shipment in B2クラウド and saves it with 保存（後で発行） (save, issue later) so someone can check and print it.

- Takes: Waybill type, planned ship date, recipient name, postcode, address, phone, item name, customer reference
- Returns: Saved, planned ship date, recipient name, customer reference

## Automate B2クラウド with a workflow

A [workflow](/product/workflows) 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.

### Today's slip numbers, handed to your order system

Starts: Every weekday at 18:00

1. Get the issued waybills with today's planned ship date.
2. Keep the waybills that were not there on the last run.
3. Post each slip number with its customer reference and recipient to your order system's webhook.

### Waybills still without a parcel status

Starts: Every weekday at 9:00

1. Check the parcel status of waybills with a planned ship date two to five days ago.
2. Keep the waybills whose 荷物状況 is still empty.
3. Email you the list with slip number and recipient.

### Weekly copy of issued waybills before they are deleted

Starts: Every Monday at 7:00

1. Get the issued waybills with a planned ship date in the last 7 days.
2. Post every row to your warehouse or archive webhook.
3. Email you the number of waybills sent, by waybill type.

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](/product/methods), it is one POST to /v1/runs from your backend, or a tool an AI agent calls over MCP. This is what “Get issued waybills” would look like.

Example request:

```
curl https://api.fous.com/v1/runs \
  -H "Authorization: Bearer $FOUS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "method": "bmypage.kuronekoyamato.co.jp/get_issued_waybills",
    "input": {
      "ship_date_from": "2026-11-10",
      "ship_date_to": "2026-11-11"
    }
  }'
```

Example response:

```
{
  "status": "completed",
  "data": {
    "waybills": [
      {
        "slip_number": "4000-1234-5671",
        "waybill_type": "発払い",
        "planned_ship_date": "2026-11-10",
        "recipient_name": "Northwind 株式会社",
        "recipient_address": "東京都港区芝公園1-2-3",
        "customer_reference": "ORD-20481"
      }
    ],
    "count": 1
  }
}
```

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.

## B2クラウド’s own options

Yamato offers B2クラウドAPI, which issues waybills from your own system and returns 送り状番号 (waybill numbers). Only corporate customers can apply. Yamato reviews each application and may decline it, charges per number issued, in some cases with a monthly fee, and asks you to plan about three months to production. B2クラウド itself exports issued data as CSV.

| Option | What it covers | What it takes |
| --- | --- | --- |
| B2クラウドAPI | Sends shipment data from your system and returns a waybill number, with or without the B2クラウド screen to check the data. | Corporate customers, application and review. Billed per number issued, a monthly fee in some cases. About three months to production. |
| CSV import and export | Imports shipments from a CSV file to issue waybills, and exports issued data from 発行済データの検索 as CSV. | A B2クラウド account. Issued data can be exported only within 90 days of issue. |
| B2クラウド by hand | Issue, save for later, reissue and search waybills, and check parcel status for up to 1,000 selected waybills a page. | A ヤマトビジネスメンバーズ account registered with a お客様コード that has a credit (掛売) contract. |

Read on November 12, 2026: [B2クラウドAPI](https://business.kuronekoyamato.co.jp/service/lineup/b2api/index.html), [Exporting issued data (FAQ)](https://b-faq.kuronekoyamato.co.jp/app/answers/detail/a_id/2043/), [Searching issued data (FAQ)](https://b-faq.kuronekoyamato.co.jp/app/answers/detail/a_id/580/).

## Signing in to B2クラウド

You sign in to ヤマトビジネスメンバーズ with your お客様コード (customer code) and a case-sensitive password, then open B2クラウド from ご利用中のサービス. With Fous you sign in once through that sign-in with your own account. The login is sealed with AES-256, never returned by the API or written to logs, and an expired session is signed back in.

## Worth knowing

- **Issued data is kept for 90 days**: Issued waybill data is deleted automatically 90 days after the issue date and can no longer be searched or exported. Data saved with 保存（後で発行） is kept 10 days from the planned ship date.
- **2,000 results, 1,000 a page**: 発行済データの検索 shows up to 2,000 records, so a wider search must be narrowed. Selection and 荷物のお問い合わせ work one page of up to 1,000 records at a time.
- **Parcel status from the next day**: 荷物状況 can be checked from the day after the parcel is handed over. It stays empty while a waybill is issued but not shipped, or before the data is updated.
- **Reissue keeps the number, history does not**: 再発行 (reissue) prints the same slip number without changes. 履歴から発行 (issue from history) creates new data with a new slip number. A forwarded parcel also moves to a new slip number.

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## Frequently asked questions

### Does B2クラウド have an API?

Yes, B2クラウドAPI, for corporate customers after application and review. It issues waybills from your system and returns waybill numbers, charged per number issued and in some cases with a monthly fee. Yamato asks you to plan about three months to production. Without it you have CSV import and export.

### How long can I search issued waybills in B2クラウド?

90 days from the issue date. After that the data is deleted automatically and can no longer be searched or exported, so a regular export or a weekly workflow is the way to keep a copy.

### How do I export tracking numbers from B2クラウド?

Open 発行済データの検索, search, tick the records, click 外部ファイルに出力, then ファイル出力 and ダウンロード. The file is CSV, and 1行目に見出しを出力する adds a header row. Yamato warns that Excel can display slip numbers incorrectly.

### Why is 荷物状況 empty for some of my waybills?

Either the waybill was issued but the parcel has not been shipped, or it was shipped and the data has not been updated yet. Status can be checked from the day after the parcel is handed over.

### Is Fous affiliated with Yamato Transport?

No. Fous is an independent product. You use it with your own ヤマトビジネスメンバーズ account, and a method reads and does only what that account can.

Fous is an independent product: it is not affiliated with, endorsed by or sponsored by the operator of B2クラウド (ヤマト運輸 (Yamato Transport)). The name is used only to say which system this page is about. Something here wrong or out of date? Write to legal@fous.com.