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POST
/
v1
/
knowledge
/
{kb_id}
/
documents
Add Knowledge Base Documents
curl --request POST \
  --url https://api.xpander.ai/v1/knowledge/{kb_id}/documents \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "document_urls": [
    "<string>"
  ]
}
'
[
  {
    "document_url": "<string>",
    "kb_id": "<string>",
    "id": "<string>",
    "name": "<string>"
  }
]

Documentation Index

Fetch the complete documentation index at: https://docs.xpander.ai/llms.txt

Use this file to discover all available pages before exploring further.

Upload documents to a knowledge base by providing URLs. The documents will be downloaded, processed, and indexed for semantic search.

​
Path Parameters

​
kb_id
string
required
Unique identifier of the knowledge base (UUID format)

​
Request Body

​
document_urls
array
required
Array of document URLs to add to the knowledge baseSupported formats:
  • PDF documents
  • Microsoft Word (.docx, .doc)
  • Text files (.txt, .md)
  • Web pages (HTML)
  • CSV and Excel files
  • Presentations (PPTX, PPT)
  • JSON and YAML files

​
Response

Returns an array of created document objects:
​
kb_id
string
Knowledge base ID
​
id
string
Unique identifier for the document (UUID) - initially null, assigned after processing completes
​
name
string
Document name (initially null)
​
document_url
string
URL of the document

​
Example Request

curl -X POST -H "x-api-key: <your-api-key>" \
  -H "Content-Type: application/json" \
  -d '{
    "document_urls": [
      "https://example.com/product-guide.pdf",
      "https://example.com/faq-page"
    ]
  }' \
  https://api.xpander.ai/v1/knowledge/<kb-id>/documents

​
Example Response

[
  {
    "kb_id": "<kb-id>",
    "id": null,
    "name": null,
    "document_url": "https://example.com/product-guide.pdf"
  },
  {
    "kb_id": "<kb-id>",
    "id": null,
    "name": null,
    "document_url": "https://example.com/faq-page"
  }
]

​
Processing Flow

  1. Upload - Documents are queued for processing
  2. Download - System downloads documents from provided URLs
  3. Extract - Text content is extracted from documents
  4. Chunk - Content is split into searchable chunks
  5. Embed - Chunks are converted to vector embeddings
  6. Index - Embeddings are stored in the vector database
Processing typically takes 10-60 seconds per document depending on size.

​
Supported File Types

  • Documents: PDF, DOCX, DOC, TXT, MD, RTF
  • Spreadsheets: CSV, XLSX, XLS
  • Presentations: PPTX, PPT
  • Web: HTML, XML
  • Code: JSON, YAML, various programming languages

​
Notes

  • Documents must be publicly accessible via HTTP/HTTPS
  • Maximum file size: 50MB per document
  • The id field is null initially until the document is processed and indexed
  • The document ID is assigned after processing/indexing completes
  • Use List Documents to check processing progress
  • Duplicate URLs will create separate document entries

Authorizations

​
x-api-key
string
header
required

API Key for authentication

Path Parameters

​
kb_id
string
required

Body

application/json

Request model for adding documents to a knowledge base.

​
document_urls
string[]
required

Documents URLs

Response

Successful Response

​
document_url
string
required

Document URL

​
kb_id
string | null

KB identifier

​
id
string | null

Document unique identifier

​
name
string | null

Document name