Developers using the Google Analytics Data API can now retrieve paid and organic conversion data programmatically for the first time. Google confirmed in its May 4, 2026, Google Analytics announcements release that cross-channel conversion reporting data is now available from the Google Analytics Data API in alpha for Google Analytics and Google Ads customers.
What the Update Introduces
Conversion reporting data is now available from the Google Analytics Data API in alpha, giving Google Analytics developers programmatic access to the same paid and organic reporting data available in the Analytics advertising section's Conversion performance report.
The update closes a long-standing gap between what analysts could see inside the Google Analytics user interface and what developers could retrieve via code. Until now, the Conversion performance report, which sits inside the Advertising section of Google Analytics, had no programmatic equivalent. Developers building custom dashboards, automated reporting pipelines, or integrations with external data warehouses had no supported method to pull that data out of the platform.
This functionality is only available in the v1alpha version of the Data API. The update introduces the `ConversionSpec` field for filtering by conversion action ID and attribution model, either data-driven or last-click, a `Section` field in response metadata to distinguish standard from conversion reporting data, and updated metadata endpoints that document which dimensions and metrics are compatible with conversion reporting.
What the Conversion Performance Report Contains
The Conversion performance report lets users review which marketing channels led to conversions across selected accounts. It supports both Google Analytics property and attribution settings, for planning, monitoring, and optimizing spend across all accounts and marketing channels, and Google Ads account and attribution settings, for optimizing spend within specific Google Ads accounts.
Via the API, developers can recreate a Conversion Performance UI report showing advertising clicks, ad cost, ad cost per click, ad cost per all conversions, ad impressions, return on ad spend, total revenue, and all conversions by default channel group.
Availability Limitations
Access to the feature is not universal. This feature may not be available to all Google Analytics properties. The Google Analytics team is actively working to expand the feature to more properties, and users with questions about their property's eligibility are directed to contact their support team.
Broader API Context
The API update fits into a wider pattern of Google opening more of its advertising data infrastructure to developers. Google announced on April 30, 2026, that the Google Ads API would expand product reporting capabilities starting June 15, 2026, adding cost and conversion metrics for Video, Demand Gen, and App campaigns. These two updates, one in the Analytics Data API and one in the Google Ads API, reflect parallel moves toward making conversion and cost data more accessible at the programmatic layer.
Practical Implications for Marketing and Development Teams
For teams that currently extract conversion data manually from the Google Analytics interface, this alpha release opens the door to automated pipelines that can pull cross-channel performance data directly into external systems. Developers can filter by specific conversion action IDs or retrieve all conversions at once, and can select between data-driven and last-click attribution models within the same API call. However, because the feature remains in alpha and is not yet broadly available, teams should confirm property eligibility before building production workflows that depend on this data surface.
Conversion reporting data is now available from the Google Analytics Data API in alpha for Google Analytics and Google Ads customers. Google Analytics developers can gain programmatic access to the same paid and organic reporting data available in the Analytics advertising section's Conversion performance report. Google directs developers to the Google Analytics Data API changelog for additional details about the new API surface.
