> ## Documentation Index > Fetch the complete documentation index at: https://docs.nugen.in/llms.txt > Use this file to discover all available pages before exploring further. # Get Document > Fetch a document's details. **Args**: `document_id`: Document ID (path parameter) **Raises**: - `404`: If the document is not found or doesn't belong to the user ## OpenAPI ````yaml https://api.nugen.in/openapi-public.json get /api/v3/documents/{document_id} openapi: 3.1.0 info: title: Nugen Intelligence API description: >+ Nugen Intelligence: Powering Specialized Intelligence At Scale. **Need an API key?** Sign up, log in to the platform and generate an API key. **Need help?** Sign up, log in to the platform and raise a support ticket. **What this API does.** Align models to your domain corpus and run them with confidence. Train-time alignment builds domain-aligned adaptors through proprietary methods spanning pre-training, supervised and reinforcement stages. Inference-time alignment quantifies uncertainty across the full generation trajectory, producing confidence scores and keeping every response on domain. **Workflow.** Upload documents, create or generate a benchmark, create an alignment project, receive an aligned model id. That one id serves chat completions, completions, embeddings and reranking, and its embeddings carry your domain's representation space, making retrieval domain aware. You define the success criteria for your domain; the platform handles the deep learning, the GPUs and the data preparation. **Authentication.** Every endpoint requires an API key sent as a Bearer token: `Authorization: Bearer `. contact: name: Nugen Intelligence - Customer Support url: https://nugen.in/signup email: support@nugen.in version: 25.4.20 servers: - url: https://api.nugen.in description: Production security: [] paths: /api/v3/documents/{document_id}: get: tags: - Documents summary: Get Document description: |- Fetch a document's details. **Args**: `document_id`: Document ID (path parameter) **Raises**: - `404`: If the document is not found or doesn't belong to the user operationId: get_document parameters: - name: document_id in: path required: true schema: type: string title: Document Id responses: '200': description: >- Returns the document's full record: document_id, name, filename, type, size, status, categories, uploader, and timestamps. content: application/json: schema: $ref: '#/components/schemas/DocumentsDetail' '422': description: Validation Error content: application/json: schema: $ref: '#/components/schemas/HTTPValidationError' security: - HTTPBearer: [] components: schemas: DocumentsDetail: properties: document_id: type: string title: Document Id description: Unique identifier for the document examples: - document_01k4x9m2p7q3r5s8 - document_01k4x9m2p7q3r5s9 document_name: anyOf: - type: string - type: 'null' title: Document Name description: >- Display name of the document. Defaults to the document id if not set at upload. examples: - Customer Support Guide filename: type: string title: Filename description: Original filename of the uploaded document examples: - product_catalog.docx - training_manual.txt type: type: string title: Type description: MIME type of the document examples: - text/plain size: type: integer minimum: 0 title: Size description: File size in bytes examples: - 2548736 - 1024000 - 512000 status: $ref: '#/components/schemas/DocumentStatus' description: >- Current processing status of the document (PROCESSING, READY, FAILED) categories: items: type: string type: array title: Categories description: >- List of category tags assigned to the document for organization and retrieval examples: - - customer_support - documentation - - products - sales - - legal - compliance uploader: type: string title: Uploader description: Email/username of the user who uploaded the document examples: - user@example.com - admin@example.com created_at: anyOf: - type: string - type: 'null' title: Created At description: Timestamp when the document was created completed_at: anyOf: - type: string - type: 'null' title: Completed At description: Timestamp when processing completed; null while still running updated_at: anyOf: - type: string - type: 'null' title: Updated At description: Timestamp of the last status change progress: anyOf: - type: number - type: 'null' title: Progress description: Completion progress, 0.0 to 100.0. Not wired up yet, always null. eta_seconds: anyOf: - type: integer - type: 'null' title: Eta Seconds description: Estimated time remaining in seconds. Not wired up yet, always null. type: object required: - document_id - filename - type - size - status - categories - uploader title: DocumentInfo description: |- One document's full record: everything on its status and list rows, plus filename, type, size and uploader found nowhere else. examples: - categories: - customer_support - documentation completed_at: '2024-01-15T10:31:00Z' created_at: '2024-01-15T10:30:00Z' document_id: document_01k4x9m2p7q3r5s8 document_name: Customer Support Guide filename: customer_support_guide.txt size: 2548736 status: READY type: text/plain updated_at: '2024-01-15T10:31:00Z' uploader: user@example.com HTTPValidationError: properties: detail: items: $ref: '#/components/schemas/ValidationError' type: array title: Detail type: object title: HTTPValidationError DocumentStatus: type: string enum: - PROCESSING - READY - FAILED title: DocumentStatus ValidationError: properties: loc: items: anyOf: - type: string - type: integer type: array title: Location msg: type: string title: Message type: type: string title: Error Type type: object required: - loc - msg - type title: ValidationError securitySchemes: HTTPBearer: type: http scheme: bearer ````