Google Ads API v24.2: AI Transparency, Multi-Party Approvals and New PMax Reporting

Google released version 24.2 of the Google Ads API on 25 June 2026. The update covers four distinct areas: account security, AI content transparency, Performance Max reporting, and campaign experimentation. The full release notes are published on Google’s Ads Developer Blog.

For advertisers and development teams building on the Google Ads API, several of these changes require attention before the EU AI Act takes effect on 2 August 2026.

Multi-Party Approvals for Sensitive Account Actions

The headline feature in v24.2 is support for multi-party approvals, which requires a second administrator to approve sensitive account actions such as user invitations and access-level changes.

For agencies managing accounts on behalf of clients, and for large organisations with multiple team members operating across the same Google Ads account, this adds a meaningful security layer. Changes to user permissions and access levels now require explicit sign-off from a second authorised administrator before they take effect, reducing the risk of unauthorised access changes passing through unreviewed.

AI Content Disclosure Fields

Version 24.2 expands support for AI-generated content disclosures, introducing new SyntheticContentInfo and SyntheticContentAttestation fields on assets and ads. These allow developers to identify and label AI-generated creative programmatically.

The update is designed to help advertisers prepare for the EU AI Act, which takes effect on 2 August 2026. Developers can begin building integrations now, although advertiser attestation fields remain read-only until the launch of v25.

For advertisers running AI-generated creative at scale, this is the time to begin building the infrastructure to identify and label that content programmatically, ahead of the August deadline rather than after it.

Performance Max Reporting Improvements

Version 24.2 adds several long-requested enhancements for Performance Max campaigns, including the ability to segment performance_max_placement_view reports by ad_network_type. This gives advertisers a clearer picture of where ads are appearing across Search, Display, and partner networks.

This fills a visibility gap that has been a consistent point of frustration for PMax advertisers. Understanding which network is driving performance within a PMax campaign has required workarounds until now. The new segmentation makes that breakdown accessible directly through the API.

The release also introduces YouTube brand channel linking through the API, enabling stronger integrations for video campaigns, along with a new landing page text generation option that can automatically create text assets from a website’s landing page.

Two New Experiment Types

Google is expanding experimentation tools with two new experiment types in v24.2. The first, COMPARE_CAMPAIGNS, allows advertisers to compare multiple campaigns or campaign types across as many as five experiment arms, including custom Performance Max experiments.

This extends the comparative testing capability that was previously limited in scope, allowing more complex multi-arm experiments to run within a single structured framework.

The second new experiment type lets advertisers test text customisation and final URL expansion within a single Performance Max campaign by splitting traffic between variations.

Both additions build on the experimentation direction Google established with the asset testing tools introduced earlier this month, giving advertisers more structured ways to test creative and structural decisions before applying them at scale.

Documentation Restructure

Google has also reorganised its API release notes with this version, separating breaking changes from feature updates and introducing a dedicated guide for feature deprecations and unversioned changes.

For development teams upgrading between versions, this restructuring reduces the time spent identifying which changes require immediate action versus which represent new capabilities. Separating breaking changes from feature additions is a straightforward improvement that makes release notes more navigable for teams working across multiple API versions simultaneously.

What to Action Now

The EU AI Act deadline on 2 August makes the SyntheticContentInfo and SyntheticContentAttestation fields the most time-sensitive element of this release for advertisers running AI-generated creative. Building the identification and labelling infrastructure now provides adequate runway before the compliance deadline.

Multi-party approvals are worth enabling for any account where user access management is a governance concern. The new PMax placement segmentation is available immediately and provides useful data for advertisers already reviewing where their Performance Max budget is being allocated across networks.