> ## Documentation Index
> Fetch the complete documentation index at: https://doc.extole.com/llms.txt
> Use this file to discover all available pages before exploring further.

# List JavaScript SDK core extensions

> Returns all JavaScript SDK core extensions (extended cores) for the client. Extended cores inject custom JavaScript into the Extole Web SDK's core loader, letting integrators extend SDK behaviour without modifying the page embed code. Set `include_archived=true` to include archived (disabled) extensions in the response.



## OpenAPI

````yaml /api-reference/management-expert.json get /v1/extended-cores
openapi: 3.0.1
info:
  description: >-
    Advanced configuration endpoints for Extole platform experts: campaign
    controllers, typed actions and triggers, advanced component types and
    facets, source mapping, report post-handlers, pre-handlers, and other expert
    configuration surfaces not included in the standard Management API.
  title: Management Expert API
  version: '1.0'
servers:
  - description: Production
    url: https://api.extole.io
security:
  - HEADER: []
  - QUERY: []
  - COOKIE: []
tags:
  - name: Authentication
  - name: Campaign Controllers
  - name: Campaign Controllers Actions
  - name: Campaign Controllers Triggers
  - name: Campaign Flow Steps
  - name: Components
  - name: Components Grants
  - name: Components Subscriptions
  - name: Components Types
  - name: Content
  - name: Debug
  - name: Domains
  - name: Email
  - name: Event Prehandlers
  - name: Events
  - name: Javascript Core Extensions
  - name: Persons
  - name: Profiles
  - name: Report Schedules
  - name: Report Types
  - name: Reporting
  - name: Security Keys
  - name: Settings
paths:
  /v1/extended-cores:
    get:
      tags:
        - Javascript Core Extensions
      summary: List JavaScript SDK core extensions
      description: >-
        Returns all JavaScript SDK core extensions (extended cores) for the
        client. Extended cores inject custom JavaScript into the Extole Web
        SDK's core loader, letting integrators extend SDK behaviour without
        modifying the page embed code. Set `include_archived=true` to include
        archived (disabled) extensions in the response.
      operationId: listExtendedCores
      parameters:
        - description: Optional includeArchived filter
          in: query
          name: include_archived
          schema:
            default: false
            type: boolean
      responses:
        '200':
          content:
            application/json:
              schema:
                items:
                  $ref: '#/components/schemas/ExtendedCoreResponse'
                type: array
          description: Successful response
        '400':
          content:
            application/json:
              examples:
                binding_error:
                  $ref: '#/components/examples/binding_error'
                invalid_json:
                  $ref: '#/components/examples/invalid_json'
                invalid_parameter:
                  $ref: '#/components/examples/invalid_parameter'
                missing_request_body:
                  $ref: '#/components/examples/missing_request_body'
              schema:
                $ref: '#/components/schemas/RestExceptionResponse'
          description: Bad Request
        '401':
          content:
            application/json:
              examples:
                method_unauthorized:
                  $ref: '#/components/examples/method_unauthorized'
              schema:
                $ref: '#/components/schemas/RestExceptionResponse'
          description: Unauthorized
        '402':
          content:
            application/json:
              examples:
                payment_required:
                  $ref: '#/components/examples/payment_required'
              schema:
                $ref: '#/components/schemas/RestExceptionResponse'
          description: Payment Required
        '403':
          content:
            application/json:
              examples:
                access_denied:
                  $ref: '#/components/examples/access_denied'
                method_unauthorized:
                  $ref: '#/components/examples/method_unauthorized'
                missing_access_token:
                  $ref: '#/components/examples/missing_access_token'
              schema:
                $ref: '#/components/schemas/RestExceptionResponse'
          description: Forbidden
        '415':
          content:
            application/json:
              examples:
                unsupported_media_type:
                  $ref: '#/components/examples/unsupported_media_type'
              schema:
                $ref: '#/components/schemas/RestExceptionResponse'
          description: Unsupported Media Type
        '429':
          content:
            application/json:
              examples:
                too_many_requests:
                  $ref: '#/components/examples/too_many_requests'
              schema:
                $ref: '#/components/schemas/RestExceptionResponse'
          description: Too Many Requests
components:
  schemas:
    ExtendedCoreResponse:
      description: >-
        JavaScript SDK core extension source definition with build-time
        expressions.
      properties:
        component_ids:
          items:
            type: string
          type: array
        component_references:
          items:
            $ref: '#/components/schemas/ComponentReferenceResponse'
          type: array
        created_date:
          $ref: '#/components/schemas/ZonedDateTime'
        enabled:
          $ref: '#/components/schemas/EnabledInExtendedCoreResponse'
        id:
          description: Unique identifier for the JavaScript SDK core extension.
          readOnly: true
          type: string
        source_code:
          $ref: '#/components/schemas/SourceCodeInExtendedCoreResponse'
        updated_date:
          $ref: '#/components/schemas/ZonedDateTime'
      required:
        - component_ids
        - component_references
        - created_date
        - enabled
        - id
        - source_code
        - updated_date
      type: object
    RestExceptionResponse:
      description: Represents the API error response
      properties:
        code:
          description: Specific error code for this error type, documented per endpoint
          type: string
        http_status_code:
          description: >-
            HTTP status code that was returned with this error, useful if client
            get response code
          format: int32
          type: integer
        message:
          description: User readable English description of the error
          type: string
        parameters:
          additionalProperties:
            description: >-
              Attributes related to the error, varies be error code, documented
              per endpoint
            type: object
          description: >-
            Attributes related to the error, varies be error code, documented
            per endpoint
          type: object
        unique_id:
          description: >-
            Unique id associated with this error, useful for discussions with
            Extole
          type: string
      required:
        - code
        - http_status_code
        - message
        - parameters
        - unique_id
      type: object
    ComponentReferenceResponse:
      properties:
        component_id:
          type: string
        socket_names:
          items:
            type: string
          type: array
      type: object
    ZonedDateTime:
      description: >-
        [RFC 3339](https://datatracker.ietf.org/doc/html/rfc3339#section-5.6) or
        [RFC 9557](https://datatracker.ietf.org/doc/html/rfc9557#section-4)
        date-time with a numeric [UTC
        offset](https://datatracker.ietf.org/doc/html/rfc3339#section-5.6) and
        an optional [IANA
        time-zone](https://datatracker.ietf.org/doc/html/rfc9557#section-4)
        suffix in square brackets. Precision up to milliseconds.
      example: '2025-10-24T02:00:00-07:00'
      pattern: >-
        ^\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])(\[[^\]]+\])?$
      type: string
    EnabledInExtendedCoreResponse:
      description: Build-time expression that controls whether the extension is active.
      oneOf:
        - description: Literal enabled
          title: Static Value
          type: boolean
        - description: >-
            Handlebars expression with
            [ExtendedCoreBuildtimeContext](https://github.com/extole/extole-specification/blob/main/openapi/expression-context/com/extole/api/extended/core/built/ExtendedCoreBuildtimeContext.d.ts).
          example: handlebars@buildtime:{{enabled}}
          externalDocs:
            description: ExtendedCoreBuildtimeContext
            url: >-
              https://github.com/extole/extole-specification/blob/main/openapi/expression-context/com/extole/api/extended/core/built/ExtendedCoreBuildtimeContext.d.ts
          pattern: ^handlebars@buildtime:.*
          title: Buildtime - Handlebars
          type: string
        - description: >-
            Javascript expression with
            [ExtendedCoreBuildtimeContext](https://github.com/extole/extole-specification/blob/main/openapi/expression-context/com/extole/api/extended/core/built/ExtendedCoreBuildtimeContext.d.ts).
          example: >-
            javascript@buildtime:function() { return
            context.getVariableContext().get('enabled');}
          externalDocs:
            description: ExtendedCoreBuildtimeContext
            url: >-
              https://github.com/extole/extole-specification/blob/main/openapi/expression-context/com/extole/api/extended/core/built/ExtendedCoreBuildtimeContext.d.ts
          pattern: ^javascript@buildtime:.*
          title: Buildtime - Javascript
          type: string
    SourceCodeInExtendedCoreResponse:
      description: >-
        Build-time expression that resolves to the JavaScript source code
        injected into the SDK.
      oneOf:
        - allOf:
            - type: string
            - not:
                anyOf:
                  - pattern: ^handlebars@buildtime:.*
                    type: string
                  - pattern: ^javascript@buildtime:.*
                    type: string
              type: string
          description: Literal source code
          title: Static Value
        - description: >-
            Handlebars expression with
            [ExtendedCoreBuildtimeContext](https://github.com/extole/extole-specification/blob/main/openapi/expression-context/com/extole/api/extended/core/built/ExtendedCoreBuildtimeContext.d.ts).
          example: handlebars@buildtime:{{sourceCode}}
          externalDocs:
            description: ExtendedCoreBuildtimeContext
            url: >-
              https://github.com/extole/extole-specification/blob/main/openapi/expression-context/com/extole/api/extended/core/built/ExtendedCoreBuildtimeContext.d.ts
          pattern: ^handlebars@buildtime:.*
          title: Buildtime - Handlebars
          type: string
        - description: >-
            Javascript expression with
            [ExtendedCoreBuildtimeContext](https://github.com/extole/extole-specification/blob/main/openapi/expression-context/com/extole/api/extended/core/built/ExtendedCoreBuildtimeContext.d.ts).
          example: >-
            javascript@buildtime:function() { return
            context.getVariableContext().get('sourceCode');}
          externalDocs:
            description: ExtendedCoreBuildtimeContext
            url: >-
              https://github.com/extole/extole-specification/blob/main/openapi/expression-context/com/extole/api/extended/core/built/ExtendedCoreBuildtimeContext.d.ts
          pattern: ^javascript@buildtime:.*
          title: Buildtime - Javascript
          type: string
  examples:
    binding_error:
      summary: binding_error
      value:
        code: binding_error
        http_status_code: 400
        message: Argument is not of the expected type
        parameters: {}
        unique_id: 00000000-0000-0000-0000-000000000000
    invalid_json:
      summary: invalid_json
      value:
        code: invalid_json
        http_status_code: 400
        message: JSON is invalid
        parameters: {}
        unique_id: 00000000-0000-0000-0000-000000000000
    invalid_parameter:
      summary: invalid_parameter
      value:
        code: invalid_parameter
        http_status_code: 400
        message: Parameter is invalid.
        parameters: {}
        unique_id: 00000000-0000-0000-0000-000000000000
    missing_request_body:
      summary: missing_request_body
      value:
        code: missing_request_body
        http_status_code: 400
        message: Missing request body
        parameters: {}
        unique_id: 00000000-0000-0000-0000-000000000000
    method_unauthorized:
      summary: method_unauthorized
      value:
        code: method_unauthorized
        http_status_code: 401
        message: Unauthorized access to this endpoint
        parameters: {}
        unique_id: 00000000-0000-0000-0000-000000000000
    payment_required:
      summary: payment_required
      value:
        code: payment_required
        http_status_code: 402
        message: The access_token provided is associated with an unpaid account.
        parameters: {}
        unique_id: 00000000-0000-0000-0000-000000000000
    access_denied:
      summary: access_denied
      value:
        code: access_denied
        http_status_code: 403
        message: >-
          The access_token provided is not permitted to access the specified
          resource.
        parameters: {}
        unique_id: 00000000-0000-0000-0000-000000000000
    missing_access_token:
      summary: missing_access_token
      value:
        code: missing_access_token
        http_status_code: 403
        message: No access_token was provided with this request.
        parameters: {}
        unique_id: 00000000-0000-0000-0000-000000000000
    unsupported_media_type:
      summary: unsupported_media_type
      value:
        code: unsupported_media_type
        http_status_code: 415
        message: Request had an unsupported or no media type
        parameters: {}
        unique_id: 00000000-0000-0000-0000-000000000000
    too_many_requests:
      summary: too_many_requests
      value:
        code: too_many_requests
        http_status_code: 429
        message: >-
          The server is unable to process your request at the moment, please
          retry later.
        parameters: {}
        unique_id: 00000000-0000-0000-0000-000000000000
  securitySchemes:
    HEADER:
      in: header
      name: Authorization
      type: apiKey
      x-bearer-format: bearer
    QUERY:
      in: query
      name: access_token
      type: apiKey
    COOKIE:
      in: cookie
      name: extole_token
      type: apiKey

````