Sitecore AI Agent REST API v2.0: Expanded Capabilities and Upcoming Deprecations
Sitecore has released Agent REST API v2.0, introducing several new endpoints that enhance experimentation, personalization, flow management, and brief handling. The update also marks the beginning of the retirement process for selected v1.0 endpoints, giving developers time to migrate to the latest APIs.
What's New in Agent REST API v2.0?
The latest version delivers a more comprehensive framework for managing content optimization and personalization workflows. Developers can now create and manage A/B/n experiments, configure flow definitions, and work with updated personalization and brief management APIs.
Enhanced Experiment Management
A new set of experiment endpoints enables the creation and maintenance of component-level A/B/n testing experiences.
Available endpoints:
- POST /api/v1/experiments/flows – Create a new component A/B/n test.
- PUT /api/v1/experiments/{flowId} – Update an existing component A/B/n test.
These additions provide greater flexibility for teams looking to optimize page components through controlled experimentation.
Personalization API Improvements
Version 2.0 introduces dedicated endpoints for creating and managing personalization variants on a page.
New endpoints:
- POST /api/v2/personalization/{pageId}/versions – Create a personalization variant.
- GET /api/v2/personalization/{pageId}/versions – Retrieve personalization variants for a page.
- PUT /api/v1/personalization/{pageId}/versions/{variantId} – Update a personalization variant.
The new version streamlines personalization workflows while providing a more scalable foundation for future enhancements.
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Flow Definition Management
Developers can now retrieve and configure flow definitions more effectively using a dedicated set of endpoints.
Available endpoints:
- GET /api/v1/flows/by-page/{pageId} – List all flow definitions associated with a page.
- GET /api/v1/flows/{flowId} – Retrieve flow definition details.
- GET /api/v1/flows/{flowId}/variants/{variantId} – Retrieve a specific variant.
- POST /api/v1/flows/{flowId}/variants/{variantId} – Configure a flow definition variant.
These APIs simplify the management of both personalization experiences and A/B testing configurations.
Expanded Brief Management
The release also introduces new capabilities for retrieving and updating briefs and brief type definitions.
Available endpoints:
- GET /api/v1/brief/brief-types/{brief_type_id} – Retrieve a brief type.
- GET /api/v1/brief – List all briefs.
- GET /api/v1/brief/{brief_id} – Retrieve a specific brief.
- PUT /api/v1/brief/{brief_id} – Update a brief.
This enhancement improves content planning workflows by providing greater control over brief management.
Deprecated Endpoints and Migration Timeline
While existing v1.0 endpoints remain operational for now, Sitecore has announced their future removal.
Personalization v1.0 Deprecation
The following endpoints will be deprecated and removed on August 4, 2026:
- GET /api/v1/personalization/by-page/{pageId}
- POST /api/v1/personalization/{pageId}/versions
Recommended action: Migrate to the new v2.0 personalization create and list endpoints.
Brief Generation Endpoint Deprecation
The following endpoint will be deprecated and removed on September 20, 2026:
- POST /api/v1/briefs/generate
Recommended action: Transition to the newly introduced brief generation endpoint before the retirement date.
Final Thoughts
Agent REST API v2.0 represents a significant step forward in Sitecore's AI-driven content optimization ecosystem. The addition of experiment management, enhanced personalization capabilities, flow definition controls, and improved brief management provides developers with a more robust and future-ready API set. Organizations currently using the older endpoints should begin planning their migration strategy to ensure uninterrupted functionality ahead of the announced deprecation deadlines.
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