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

# Retrieve all categories

> Retrieve a paginated list of categories from the knowledge base. Supports filtering by knowledge base ID, parent category ID, language, and creation/update timestamps, as well as sorting.

export const ScopesList = ({scopes = [], description = "This API requires one of the following scopes:"}) => {
  if (!scopes || scopes.length === 0) {
    return null;
  }
  const sortedScopes = scopes.sort((a, b) => a.localeCompare(b));
  return <div>
      <div className="text-sm mb-2">{description}</div>
      <div>
        {sortedScopes.map((scope, index) => <div key={index}>
            <code>
              <span className="text-xs">{scope}</span>
            </code>
          </div>)}
      </div>
    </div>;
};

export const SupportedProducts = ({marketing, sales, service, cms, data, commerce, crm, marketingLevel, salesLevel, serviceLevel, cmsLevel, dataLevel, commerceLevel, crmLevel}) => {
  const translations = {
    description: "Requires one of the following products or higher.",
    productNames: {
      marketing: "Marketing Hub",
      sales: "Sales Hub",
      service: "Service Hub",
      cms: "Content Hub",
      data: "Data Hub",
      commerce: "Revenue Hub",
      crm: "Smart CRM"
    },
    tiers: {
      free: "Free",
      starter: "Starter",
      professional: "Professional",
      enterprise: "Enterprise"
    }
  };
  const translateTier = tier => {
    if (!tier) return '';
    const lowerTier = tier.toLowerCase();
    return translations.tiers[lowerTier] || tier;
  };
  const products = [{
    name: marketing ? translations.productNames.marketing : '',
    level: translateTier(marketingLevel),
    icon: "https://www.hubspot.com/hubfs/Knowledge_Base_2023-24-25/developer/icons/MarketingHub.svg",
    alt: "Marketing Hub"
  }, {
    name: sales ? translations.productNames.sales : '',
    level: translateTier(salesLevel),
    icon: "https://www.hubspot.com/hubfs/Knowledge_Base_2023-24-25/developer/icons/SalesHub.svg",
    alt: "Sales Hub"
  }, {
    name: service ? translations.productNames.service : '',
    level: translateTier(serviceLevel),
    icon: "https://www.hubspot.com/hubfs/Knowledge_Base_2023-24-25/developer/icons/ServiceHub.svg",
    alt: "Service Hub"
  }, {
    name: cms ? translations.productNames.cms : '',
    level: translateTier(cmsLevel),
    icon: "https://www.hubspot.com/hubfs/Knowledge_Base_2023-24-25/developer/icons/ContentHub.svg",
    alt: "Content Hub"
  }, {
    name: data ? translations.productNames.data : '',
    level: translateTier(dataLevel),
    icon: "https://www.hubspot.com/hubfs/Knowledge_Base_2023-24-25/developer/icons/DataHub.svg",
    alt: "Data Hub"
  }, {
    name: commerce ? translations.productNames.commerce : '',
    level: translateTier(commerceLevel),
    icon: "https://www.hubspot.com/hubfs/Knowledge_Base/subscription_key_icons/commerce_icon.svg",
    alt: "Revenue Hub"
  }, {
    name: crm ? translations.productNames.crm : '',
    level: translateTier(crmLevel),
    icon: "https://www.hubspot.com/hubfs/Knowledge_Base_2023-24-25/developer/icons/SmartCRM.svg",
    alt: "Smart CRM"
  }].filter(product => product.name && product.level);
  if (products.length === 0) return null;
  return <div>
      <div className="text-sm mb-2">{translations.description}</div>
      <div className={`grid ${products.length === 1 ? 'grid-cols-1' : 'grid-cols-2'} gap-1.5`}>
        {products.map((product, index) => <div key={index} style={{
    display: 'flex',
    alignItems: 'center'
  }}>
            <img src={product.icon} alt={product.alt} className="w-3.5 h-3.5 mr-1.5 mt-2.5 mb-2.5 flex-shrink-0 align-middle" />
            <span className="font-medium mr-1 text-sm">{product.name} -</span>
            <span className="text-sm">{product.level}</span>
          </div>)}
      </div>
    </div>;
};

<AccordionGroup>
  <Accordion title="Supported products" defaultOpen="true" icon="cubes">
    <SupportedProducts service={true} serviceLevel="PROFESSIONAL" />
  </Accordion>

  <Accordion title="Required scopes" icon="key">
    <ScopesList
      scopes={[
  'cms.knowledge_base.articles.read'
]}
    />
  </Accordion>
</AccordionGroup>


## OpenAPI

````yaml specs/2027-03-beta/cms-knowledge-base-v2027-03-beta.json GET /cms/knowledge-base/2027-03-beta/categories
openapi: 3.0.1
info:
  title: CMS Knowledge Base
  description: Basepom for all HubSpot Projects
  version: 2027-03-beta
  x-hubspot-product-tier-requirements:
    service: PROFESSIONAL
servers:
  - url: https://api.hubapi.com
security: []
tags:
  - name: Categories
  - name: Drafts
  - name: Tags
  - name: Basic
paths:
  /cms/knowledge-base/2027-03-beta/categories:
    get:
      tags:
        - Categories
      summary: Retrieve all categories
      description: >-
        Retrieve a paginated list of categories from the knowledge base.
        Supports filtering by knowledge base ID, parent category ID, language,
        and creation/update timestamps, as well as sorting.
      operationId: get-/cms/knowledge-base/2027-03-beta/categories
      parameters:
        - name: after
          in: query
          description: >-
            A pagination cursor. Pass the value from the previous response’s
            paging.next.after to retrieve the next page.
          required: false
          style: form
          explode: true
          schema:
            type: string
        - name: createdAfter
          in: query
          description: >-
            Filter categories created after the specified date and time. 
            Accepts an ISO-8601 timestamp (e.g., 2026-09-20T00:00:00Z) or a
            plain date (e.g., 2026-09-20).
          required: false
          style: form
          explode: true
          schema:
            type: string
            format: date-time
        - name: createdAt
          in: query
          description: >-
            Filter categories to those with this exact creation date and time.
            Accepts an ISO-8601 timestamp (e.g., 2026-09-20T00:00:00Z) or a
            plain date (e.g., 2026-09-20).
          required: false
          style: form
          explode: true
          schema:
            type: string
            format: date-time
        - name: createdBefore
          in: query
          description: >-
            Filter to categories created before the specified date and time.
            Accepts an ISO-8601 timestamp (e.g., 2026-09-20T00:00:00Z) or a
            plain date (e.g., 2026-09-20).
          required: false
          style: form
          explode: true
          schema:
            type: string
            format: date-time
        - name: knowledgeBaseIds
          in: query
          description: >-
            Filter categories by specific knowledge base IDs. Accepts multiple
            values, repeated as separate query parameters.
          required: false
          style: form
          explode: true
          schema:
            type: array
            items:
              type: string
        - name: language
          in: query
          description: >-
            Filter categories by a specific language. Accepts an ISO 639
            language code (e.g., en, es), optionally with a region subtag (e.g.,
            en-US).
          required: false
          style: form
          explode: true
          schema:
            type: string
        - name: limit
          in: query
          description: >-
            The number of results to display per page. Default is 25; maximum is
            100.
          required: false
          style: form
          explode: true
          schema:
            type: integer
            format: int32
        - name: parentCategoryIds
          in: query
          description: >-
            Filter categories by specific parent category IDs. Accepts multiple
            values, repeated as separate query parameters.
          required: false
          style: form
          explode: true
          schema:
            type: array
            items:
              type: string
        - name: sort
          in: query
          description: >-
            Specify how to sort results. Accepts name, createdAt, or updatedAt;
            prefix a field with - for descending order (e.g., -createdAt).
            Defaults to createdAt descending (newest first).
          required: false
          style: form
          explode: true
          schema:
            type: array
            items:
              type: string
        - name: updatedAfter
          in: query
          description: >-
            Filter to categories updated after the specified date and time.
            Accepts an ISO-8601 timestamp (e.g., 2026-09-20T00:00:00Z) or a
            plain date (e.g., 2026-09-20).
          required: false
          style: form
          explode: true
          schema:
            type: string
            format: date-time
        - name: updatedAt
          in: query
          description: >-
            Filter categories to those with this exact update date and time.
            Accepts an ISO-8601 timestamp (e.g., 2026-09-20T00:00:00Z) or a
            plain date (e.g., 2026-09-20).
          required: false
          style: form
          explode: true
          schema:
            type: string
            format: date-time
        - name: updatedBefore
          in: query
          description: >-
            Filter to categories updated before the specified date and time.
            Accepts an ISO-8601 timestamp (e.g., 2026-09-20T00:00:00Z) or a
            plain date (e.g., 2026-09-20).
          required: false
          style: form
          explode: true
          schema:
            type: string
            format: date-time
      responses:
        '200':
          description: successful operation
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CollectionResponseCategoryForwardPaging'
        default:
          $ref: '#/components/responses/Error'
          description: ''
      security:
        - oauth2:
            - cms.knowledge_base.settings.read
        - oauth2:
            - cms.knowledge_base.articles.publish
        - oauth2:
            - cms.knowledge_base.articles.write
        - oauth2:
            - cms.knowledge_base.articles.read
        - oauth2:
            - cms.knowledge_base.settings.write
components:
  schemas:
    CollectionResponseCategoryForwardPaging:
      required:
        - results
      type: object
      properties:
        paging:
          $ref: '#/components/schemas/ForwardPaging'
        results:
          type: array
          items:
            $ref: '#/components/schemas/Category'
    ForwardPaging:
      type: object
      properties:
        next:
          $ref: '#/components/schemas/NextPage'
    Category:
      required:
        - createdAt
        - id
        - knowledgeBaseId
        - language
        - name
        - position
        - translations
        - updatedAt
        - url
        - visibleOnHomepage
      type: object
      properties:
        createdAt:
          type: string
          format: date-time
        createdByUserId:
          type: string
        description:
          type: string
        id:
          type: string
        knowledgeBaseId:
          type: string
        language:
          type: string
        name:
          type: string
        parentCategoryId:
          type: string
        position:
          type: integer
          format: int32
        translations:
          type: object
          additionalProperties:
            $ref: '#/components/schemas/CategoryTranslation'
        updatedAt:
          type: string
          format: date-time
        updatedByUserId:
          type: string
        url:
          type: string
        visibleOnHomepage:
          type: boolean
    Error:
      required:
        - category
        - correlationId
        - message
      type: object
      properties:
        category:
          type: string
          description: The error category
        context:
          type: object
          additionalProperties:
            type: array
            items:
              type: string
          description: Context about the error condition
          example: >-
            {invalidPropertyName=[propertyValue], missingScopes=[scope1,
            scope2]}
        correlationId:
          type: string
          description: >-
            A unique identifier for the request. Include this value with any
            error reports or support tickets
          format: uuid
          example: aeb5f871-7f07-4993-9211-075dc63e7cbf
        errors:
          type: array
          description: further information about the error
          items:
            $ref: '#/components/schemas/ErrorDetail'
        links:
          type: object
          additionalProperties:
            type: string
          description: >-
            A map of link names to associated URIs containing documentation
            about the error or recommended remediation steps
        message:
          type: string
          description: >-
            A human readable message describing the error along with remediation
            steps where appropriate
          example: An error occurred
        subCategory:
          type: string
          description: >-
            A specific category that contains more specific detail about the
            error
      description: >-
        Represents an error response returned by the API when an operation
        fails. This component is used in various endpoints to provide detailed
        information about the error encountered.
      example:
        message: Invalid input (details will vary based on the error)
        correlationId: aeb5f871-7f07-4993-9211-075dc63e7cbf
        category: VALIDATION_ERROR
        links:
          knowledge-base: https://www.hubspot.com/products/service/knowledge-base
    NextPage:
      required:
        - after
      type: object
      properties:
        after:
          type: string
          description: >-
            A string token representing the paging cursor for the next set of
            results.
        link:
          type: string
          description: >-
            A string URL that provides a direct link to the next page of
            results.
      description: >-
        Specifies the paging information needed to retrieve the next set of
        results in a paginated API response
    CategoryTranslation:
      type: object
      properties:
        description:
          type: string
          description: >-
            The localized description of the category. It is a string providing
            additional details about the category in the target language.
        name:
          type: string
          description: >-
            The localized name of the category. It is a string representing the
            category's name in the target language.
    ErrorDetail:
      required:
        - message
      type: object
      properties:
        code:
          type: string
          description: The status code associated with the error detail
        context:
          type: object
          additionalProperties:
            type: array
            items:
              type: string
          description: Context about the error condition
          example: '{missingScopes=[scope1, scope2]}'
        in:
          type: string
          description: The name of the field or parameter in which the error was found.
        message:
          type: string
          description: >-
            A human readable message describing the error along with remediation
            steps where appropriate
        subCategory:
          type: string
          description: >-
            A specific category that contains more specific detail about the
            error
      description: >-
        Represents detailed information about an error that occurred in the API.
        This component is used to provide additional context and specifics about
        errors, typically as part of an error response.
  responses:
    Error:
      description: An error occurred.
      content:
        '*/*':
          schema:
            $ref: '#/components/schemas/Error'
  securitySchemes:
    oauth2:
      type: oauth2
      flows:
        authorizationCode:
          authorizationUrl: https://app.hubspot.com/oauth/authorize
          tokenUrl: https://api.hubapi.com/oauth/v1/token
          scopes:
            cms.knowledge_base.articles.publish: ''
            cms.knowledge_base.articles.read: ''
            cms.knowledge_base.articles.write: ''
            cms.knowledge_base.settings.read: ''
            cms.knowledge_base.settings.write: ''

````