Yahoo! JAPAN Ads API | Developer Center

Announcement

• 2025/12/10

  Display Ads (Auction): Changes to placement list create and edit views

  We will change the create and edit view of placement list.

• 2025/12/09

  Integrated "Business ID"

  We will shift the IDs used for Yahoo! JAPAN Ads from “Yahoo! JAPAN Business ID” to the integrated “Business ID."

• 2025/12/09

  Display Ads: Increase minimum pixel sizes and stop adding images

  We will increase the minimum and recommended pixel sizes for some images that will be available for Display Ads.

• 2025/12/05

  Yahoo! JAPAN Ads: Renewal of payment management and launch of Payment Center (Added maintenance information)

  We will renew the payment management feature of Yahoo! JAPAN Ads.

• 2025/11/27

  Yahoo! JAPAN Ads: Remove automatic payment settings for long-term payment failures

  We have removed automatic credit card payments that have been failing long-term.

• 2025/11/17

  Yahoo! JAPAN Ads: System maintenance notification scheduled for November 15, 2025

  We completed the system maintenance for Search Ads, Search Ads (Shopping), and Branding Search Ads.

• 2025/11/13

  Year-end and New Year's holidays

  Yahoo! JAPAN Ads support will be closed during the year-end of 2025 and the new year of 2026.

• 2025/11/11

  Yahoo! JAPAN Ads: Details of the integrated "Business ID"

  Details on the new scheduled implementations of Business ID integration.

• 2025/11/06

  Search Ads: Launch of conversion API

  We have launched the conversion API for Search Ads.

• 2025/11/06

  Termination of the legacy conversion tracking tag and site retargeting tag system

  We have terminated the legacy conversion tracking tag and site retargeting tag system.