Create a JavaScript SDK core extension
Creates a new extended core definition. Returns the persisted extended core with its server-assigned id. The extension is created in an active state; archive it with DELETE /v1/extended-cores/{id} to disable it without deleting it permanently.
Authorizations
Body
ExtendedCoreCreateRequest object
Response
Successful response
JavaScript SDK core extension source definition with build-time expressions.
RFC 3339 or RFC 9557 date-time with a numeric UTC offset and an optional IANA time-zone suffix in square brackets. Precision up to milliseconds.
^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}(\.\d{1,3})?(Z|[+-](?:[01][0-9]|2[0-3]):[0-5][0-9])(\[[^\]]+\])?$"2025-10-24T02:00:00-07:00"
Build-time expression that controls whether the extension is active.
Unique identifier for the JavaScript SDK core extension.
Build-time expression that resolves to the JavaScript source code injected into the SDK.
RFC 3339 or RFC 9557 date-time with a numeric UTC offset and an optional IANA time-zone suffix in square brackets. Precision up to milliseconds.
^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}(\.\d{1,3})?(Z|[+-](?:[01][0-9]|2[0-3]):[0-5][0-9])(\[[^\]]+\])?$"2025-10-24T02:00:00-07:00"
