> ## Documentation Index > Fetch the complete documentation index at: https://docs.open.cx/llms.txt > Use this file to discover all available pages before exploring further. > The whole content tree for one language: nested categories with their articles, in the order they are served, each article flagged with its version and publish state. # Tree ## OpenAPI ````yaml get /hc/{helpCenterId}/structure/tree openapi: 3.1.0 info: title: OpenCX API description: > OpenCX is an AI-powered, all-in-one platform for customer support and outbound communications. Use this API to manage your OpenCX organization's AI agents, actions, conversations, contacts, and more. To get started, generate a new API key from the dashboard. ## Authentication All API endpoints require authentication using a Bearer token. You can generate an API key from your OpenCX dashboard. ## Rate Limiting API requests are rate limited to ensure fair usage. The current limits are: - 100 requests per minute for standard endpoints - 1000 requests per minute for streaming endpoints ## Error Handling The API uses standard HTTP status codes and returns detailed error messages in the response body. version: 1.0-beta license: name: MIT url: https://opensource.org/licenses/MIT servers: - url: http://localhost:8080 description: Development - url: https://api.open.cx description: Production security: - bearerAuth: [] paths: /hc/{helpCenterId}/structure/tree: get: summary: Get the help center content tree description: >- The whole tree for one language — nested topics with their articles, in the order they are served. Each article reports whether it has a version, a published version and an unsaved draft. operationId: getHelpCenterTree parameters: - schema: type: string minLength: 2 in: query name: language_code required: true - schema: type: string format: uuid pattern: >- ^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$ in: path name: helpCenterId required: true responses: '200': description: Default Response content: application/json: schema: $ref: '#/components/schemas/HelpCenterTreeResponseDto' '500': description: Internal Server Error content: application/json: schema: $ref: '#/components/schemas/ErrorDto' components: schemas: HelpCenterTreeResponseDto: $schema: https://json-schema.org/draft/2020-12/schema $id: '#/components/schemas/HelpCenterTreeResponseDto' type: object properties: topics: type: array items: type: object properties: entity_id: type: string format: uuid pattern: >- ^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$ name: type: string description: anyOf: - type: string - type: 'null' slug: type: string icon: anyOf: - type: string - type: 'null' position: type: integer minimum: -9007199254740991 maximum: 9007199254740991 articles: type: array items: type: object properties: entity_id: type: string format: uuid pattern: >- ^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$ title: type: string position: type: integer minimum: -9007199254740991 maximum: 9007199254740991 has_version: type: boolean has_published_version: type: boolean has_draft: type: boolean required: - entity_id - title - position - has_version - has_published_version - has_draft additionalProperties: false topics: type: array items: type: object properties: entity_id: type: string format: uuid pattern: >- ^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$ name: type: string description: anyOf: - type: string - type: 'null' slug: type: string icon: anyOf: - type: string - type: 'null' position: type: integer minimum: -9007199254740991 maximum: 9007199254740991 articles: type: array items: type: object properties: entity_id: type: string format: uuid pattern: >- ^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$ title: type: string position: type: integer minimum: -9007199254740991 maximum: 9007199254740991 has_version: type: boolean has_published_version: type: boolean has_draft: type: boolean required: - entity_id - title - position - has_version - has_published_version - has_draft additionalProperties: false topics: type: array items: type: object properties: entity_id: type: string format: uuid pattern: >- ^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$ name: type: string description: anyOf: - type: string - type: 'null' slug: type: string icon: anyOf: - type: string - type: 'null' position: type: integer minimum: -9007199254740991 maximum: 9007199254740991 articles: type: array items: type: object properties: entity_id: type: string format: uuid pattern: >- ^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$ title: type: string position: type: integer minimum: -9007199254740991 maximum: 9007199254740991 has_version: type: boolean has_published_version: type: boolean has_draft: type: boolean required: - entity_id - title - position - has_version - has_published_version - has_draft additionalProperties: false topics: type: array items: type: object properties: entity_id: type: string format: uuid pattern: >- ^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$ name: type: string description: anyOf: - type: string - type: 'null' slug: type: string icon: anyOf: - type: string - type: 'null' position: type: integer minimum: -9007199254740991 maximum: 9007199254740991 articles: type: array items: type: object properties: entity_id: type: string format: uuid pattern: >- ^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$ title: type: string position: type: integer minimum: -9007199254740991 maximum: 9007199254740991 has_version: type: boolean has_published_version: type: boolean has_draft: type: boolean required: - entity_id - title - position - has_version - has_published_version - has_draft additionalProperties: false topics: type: array items: type: object properties: entity_id: type: string format: uuid pattern: >- ^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$ name: type: string description: anyOf: - type: string - type: 'null' slug: type: string icon: anyOf: - type: string - type: 'null' position: type: integer minimum: -9007199254740991 maximum: 9007199254740991 articles: type: array items: type: object properties: entity_id: type: string format: uuid pattern: >- ^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$ title: type: string position: type: integer minimum: -9007199254740991 maximum: 9007199254740991 has_version: type: boolean has_published_version: type: boolean has_draft: type: boolean required: - entity_id - title - position - has_version - has_published_version - has_draft additionalProperties: false topics: default: [] type: array items: type: object properties: {} additionalProperties: false required: - entity_id - name - description - slug - icon - position - articles - topics additionalProperties: false required: - entity_id - name - description - slug - icon - position - articles - topics additionalProperties: false required: - entity_id - name - description - slug - icon - position - articles - topics additionalProperties: false required: - entity_id - name - description - slug - icon - position - articles - topics additionalProperties: false required: - entity_id - name - description - slug - icon - position - articles - topics additionalProperties: false required: - topics additionalProperties: false ErrorDto: type: object properties: statusCode: type: integer message: type: string error: type: string securitySchemes: bearerAuth: type: http scheme: bearer bearerFormat: JWT ````