LY Ads API | Developer Center
日本語What is LY Ads API
The LY Ads API connects our system and applications that developers and advertisers create. It helps you manage Search Ads and Display Ads efficiently. Developers can create various applications such as a tool that efficiently manages large ad accounts and campaigns and one that shows report data graphically. The applications you create will be available to third parties and may trigger business expansion.
Benefits of introducing LY Ads API
The main benefits of introducing LY Ads API are "more efficient management of large campaigns and ads," "less labor through automation," and "less human error." Additionally, combining multiple tools or creating your management logic will give you more advanced ad-management solutions. Advertisers and agencies that manage several accounts will benefit.
We introduce "Anticipated problems" and "Primary solutions" to describe the benefit of using the LY Ads API.

Most popular API services
| Search Ads | Display Ads |
|---|---|
| ReportDefinitionService CampaignService AdGroupAdService AccountService AdGroupService AdGroupCriterionService CampaignTargetService OfflineConversionService CampaignExportService CampaignCriterionService |
ReportDefinitionService CampaignService AdGroupAdService AccountService AdGroupService MediaService AudienceListService AdGroupTargetService AuditLogService BalanceService |
Notes on introducing LY Ads API
You can do almost the same thing as the LY Ads Campaign Management Tool through the API.
The main features of LY Ads API are as follows.
| Entity | Details |
|---|---|
| Service | LY Ads Search Ads / Display Ads |
| Data format | JSON |
| Interface definition | OpenAPI Specification |
| Authentication of application | OAuth |
| API user access | Granted by company |
LY Ads API requires a developer or programmer with technical skills to develop and maintain applications (upgrading, etc.).
This API will be a good option for companies whose costs for developing and managing applications match the benefits of introducing the API.
| Tool | Programmer | Pricing | Description |
|---|---|---|---|
| LY Ads API | Required | Free | You can practice highly flexible development and ad management that matches your needs. Effective ad management such as receiving automated and customized reports, changing bids, and replacing ad texts will be available. It requires routine maintenance by a developer or programmer with technical skills after introduction. |
| Campaign Editor | Not required | Free | A tool that helps you modify LY Ads data. You can use it offline and upload your ads to our ad management tool. It lets you work on your data in bulk without being interrupted by slow internet performance. Learn more about the Campaign Editor. ・Start Using Campaign Editor-Search Ads ・Start Using Campaign Editor-Display Ads (Auction) |
| Campaign Management Tool | Not required | Free | An online tool that helps you modify LY Ads. The more accounts you manage, the more labor you need. |
| Ad management tool (third party) |
Not required | Paid plan | Ad management tools that our technology partners offer. They use LY Ads API. Features and fees vary depending on the tool. You need to select one that matches your goal or budget. Main features: ・Automated reports *When using the Ad management tool, you don't need to sign-up for LY Ads API. |
Note
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LY Ads API version upgrades every few months to add or improve functions.
The application developed with LY Ads API has to be modified when upgrading.
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LY Ads API does not support a payment function.
Please consider to increase your monthly budget or using automatic charge for the larger size of campaign management enabled by API.
Regarding LY Ads API application, please refer to "Apply API Use" for details.
Certified LY Ads API partners
You can introduce the other company's API (our API partners) for ad management.
Certified partners who have achieved "operational efficiency through integrated management" and "advanced management" are on the list.
Introducing the other company's API isn't free. Compare the cost with the benefits.
Learn more about Certified LY Ads API partners(available in Japanese).
