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4 Articles
Introduction to the CMS (SaaS) REST API
9 min
Updated24 Sep 2026
Optimizely Content Management System (CMS) (SaaS) has a REST API to manage resources. See the developer guide for available Resource types .
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Authentication and authorization
6 min
Updated18 Sep 2026
To use CMS (SaaS) REST API, you must authenticate calls with a bearer JSON Web Token (JWT) by requesting a JWT from the token endpoint https //docs. developers.
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Experimental APIs
2 min
Updated04 Sep 2026
Experimental APIs are features or functionalities that are in the early stages of development. They are not ready for general use and may change significantly or be removed in future updates.
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Migrate from Content API preview3 to v1
1 Article
55 min
Updated18 Sep 2026
Migration from preview3 to V1 has a lot of breaking changes between the Optimizely CMS Content API preview3 and v1 versions. Use this guide when migrating an existing integration from preview3 to the stable v1 API.
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