> [!CAUTION]
> **Caution:** This documentation is for Google Ads API **v24** . The latest active version is [**v26**](https://developers.google.com/google-ads/api/reference/rpc/latest/CampaignBidModifierService).

Service to manage campaign bid modifiers.

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v24/services/campaign_bid_modifier_service.proto)
The following methods are available for this service:

- [MutateCampaignBidModifiers](https://developers.google.com/google-ads/api/reference/rpc/v24/CampaignBidModifierService/MutateCampaignBidModifiers.md.txt)