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Optimizely

Optimizely CMS Content Delivery API v3.0

Read-only content delivery from Optimizely CMS — content by identifier, children, ancestors, and site metadata. Deployed inside the customer's own CMS instance, so the base URL is the customer's CMS host. One of only two Optimizely documents that use RFC 9457 problem+json. Harvested verbatim 2026-08-13.

Documentation Provider Profile APIs.io OpenAPI GitHub

Optimizely CMS Content Delivery API v3.0 is one of 50 APIs that Optimizely publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Content Management and Headless. The published artifact set on APIs.io includes an OpenAPI specification and an API reference.

This API exposes 6 operations across 6 paths, organized into 2 resource areas, and defines 7 schemas. It is described by OpenAPI 3.0.1, at version v3.

Requests are made against the base URL https://{cms-host}/api/episerver/v3.0.

6 operations 6 paths 7 schemas 6 GET

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.0.1
API Version
v3
Base URL
https://{cms-host}/api/episerver/v3.0
Resource Areas
2

Paths & Operations 6

Across 6 paths, the API surfaces 6 operations — 6 GET. They span 2 resource areas: Content, Site. Each is listed below with its method, path, parameters, and response codes.

Content 4
GET
/api/episerver/v3.0/content/{contentIdentifier}
Get content by given content reference or unique identifier and language.
Content_GetByContentIdentifier 4 params → 200400403404
GET
/api/episerver/v3.0/content/{contentIdentifier}/children
Get the children of the content item by given content reference or unique identifier and language.
Content_GetChildren 6 params → 200400403404
GET
/api/episerver/v3.0/content/{contentIdentifier}/ancestors
Get the ancestors of the content item by given content reference or unique identifier and language.
Content_GetAncestors 4 params → 200400403404
GET
/api/episerver/v3.0/content
Get content by given content url or by list of GUID/Reference with given language
Content_QueryContent 7 params → 200400403404
Site 2
GET
/api/episerver/v3.0/site
Get a list of sites.
Site_List → 200403404
GET
/api/episerver/v3.0/site/{id}
Gets the site with the provided identifier.
Site_Get 1 param → 200403404

Schemas 7

The contract defines 7 schemas that model the data the API accepts and returns. The most detailed are content (15 properties), contentReference (7 properties), siteDefinition (6 properties), siteDefinitionLanguage (5 properties). Each schema is shown below with its type and property counts.

content
object
15 properties
contentReference
object
7 properties
hostDefinition
object
3 properties
language
object
2 properties
problemDetails
object
5 properties
siteDefinition
object
6 properties
siteDefinitionLanguage
object
5 properties

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

optimizely-content-management-system-episervercontentapidocs-openapi.json Raw ↑

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#Content Management#Headless
← Back to O APIs
API Details
ID
optimizely:cms-content-delivery-api
Base URL
https://{cms-host}/api/episerver/v3.0
Docs
https://docs.developers.optimizely.com/content-management-system/reference
Provider
Optimizely
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