> ## Documentation Index > Fetch the complete documentation index at: https://docs.evermind.ai/llms.txt > Use this file to discover all available pages before exploring further. # Get a topic > Read one topic's full content. Storage is transparent to the caller: content held inline and content held in object storage are returned the same way. ## OpenAPI ````yaml /api-reference/openapi.json get /api/v2/knowledge_bases/{kb_id}/documents/{doc_id}/topics/{topic_id} openapi: 3.1.0 info: title: EverOS Cloud Memory API version: 2.0.0 license: name: Apache-2.0 identifier: Apache-2.0 contact: name: EverMind AI email: service@evermind.ai url: https://github.com/EverMind-AI/everos-cloud-sdk-python description: >- Official Python client for the EverOS Cloud Memory API. Add, search, retrieve, and manage long-term memory for your AI applications over a typed interface (pydantic v2, with full type hints). Install and usage guides: https://github.com/EverMind-AI/everos-cloud-sdk-python servers: - url: https://api.evermind.ai description: Production security: - BearerAuth: [] paths: /api/v2/knowledge_bases/{kb_id}/documents/{doc_id}/topics/{topic_id}: get: tags: - Knowledge summary: Get a topic description: >- Read one topic's full content. Storage is transparent to the caller: content held inline and content held in object storage are returned the same way. operationId: getTopic parameters: - name: kb_id in: path required: true schema: type: string title: Kb Id - name: doc_id in: path required: true schema: type: string title: Doc Id - name: topic_id in: path required: true schema: type: string title: Topic Id responses: '200': description: Successful Response content: application/json: schema: $ref: '#/components/schemas/SuccessEnvelope_TopicDetailData_' '401': description: Missing or invalid bearer token. content: application/json: schema: $ref: '#/components/schemas/GatewayError' '403': description: >- Authenticated but not permitted — either rejected by the auth service, or the account's memory API version does not match the interface version implied by the path (a v1 account calling an /api/v2 route). content: application/json: schema: $ref: '#/components/schemas/GatewayError' '404': description: Topic absent or not owned by the path kb/document '422': description: Validation Error content: application/json: schema: $ref: '#/components/schemas/HTTPValidationError' '429': description: Rate limit or quota exceeded. content: application/json: schema: $ref: '#/components/schemas/GatewayError' '503': description: >- The gateway could not reach the authentication service. Transient — retry with backoff. content: application/json: schema: $ref: '#/components/schemas/GatewayError' components: schemas: SuccessEnvelope_TopicDetailData_: properties: request_id: type: string title: Request Id description: Request trace id (peer to data) data: $ref: '#/components/schemas/TopicDetailData' description: Endpoint-defined business result type: object required: - request_id - data title: SuccessEnvelope[TopicDetailData] GatewayError: type: object additionalProperties: true description: >- Gateway error body. NOTE: shape is not yet uniform across auth/quota/ rate-limit paths — treat fields as best-effort. Commonly includes a `code`/`message` (flat) or an `error` object/string with a `message`. title: GatewayError HTTPValidationError: properties: detail: items: $ref: '#/components/schemas/ValidationError' type: array title: Detail description: One entry per field that failed validation. type: object title: HTTPValidationError TopicDetailData: properties: id: type: string title: Id description: Topic id. doc_id: type: string title: Doc Id description: The document this topic was extracted from. kb_id: type: string title: Kb Id description: The knowledge base that document belongs to. type: type: string enum: - root - section - element title: Type description: Structural role of this topic node category_id: type: string title: Category Id default: '' description: The category the document is filed under; empty when uncategorized. category_name: anyOf: - type: string - type: 'null' title: Category Name description: >- That category's display name, resolved for you. Null when the document is uncategorized or the category no longer exists. name: type: string title: Name description: The topic's title. depth: type: integer title: Depth default: 0 description: >- Depth in the document tree — 0 is the document root, 1 a top-level topic. seq: type: integer title: Seq default: 0 description: >- Depth-first position within the document. Use it as an ordering, not as an index to compute with. summary: type: string title: Summary default: '' description: >- Retrieval-oriented summary covering this topic and everything under it. content: anyOf: - type: string - type: 'null' title: Content description: >- The topic's full markdown body, restored transparently whether it was stored inline or in object storage. Null on the document-root node, which has no body. labels: items: type: string type: array title: Labels description: Labels attached to the topic during extraction. parent_id: anyOf: - type: string - type: 'null' title: Parent Id description: The topic above this one. Null only on the document root. children_ids: items: type: string type: array title: Children Ids description: The topics directly beneath this one. metadata: additionalProperties: true type: object title: Metadata description: Extraction metadata carried alongside the topic. tag_ids: items: type: string maxLength: 128 minLength: 1 description: Opaque semantic tag id type: array maxItems: 50 title: Tag Ids description: Opaque final materialized semantic tag ids (maximum 50) version: type: integer minimum: 0 title: Version description: Current topic tag CAS version created_at: anyOf: - type: string format: date-time - type: 'null' title: Created At description: When the topic was extracted. updated_at: anyOf: - type: string format: date-time - type: 'null' title: Updated At description: When it last changed. type: object required: - id - doc_id - kb_id - type - name - tag_ids - version title: TopicDetailData description: >- Full topic (node), with content transparently restored (inline or from S3). ValidationError: properties: loc: items: anyOf: - type: string - type: integer type: array title: Location description: Path to the offending field, from the body root. msg: type: string title: Message description: What is wrong with it. type: type: string title: Error Type description: Machine-readable validation-error kind. type: object required: - loc - msg - type title: ValidationError securitySchemes: BearerAuth: type: http scheme: bearer description: 'API key issued by EverOS, sent as `Authorization: Bearer `.' ````