lb_capture

Submits content for ingestion into the knowledge graph. The call returns immediately with a pending ID — processing (extraction, summarization, embedding, link detection) happens asynchronously and typically completes within one minute.

Use lb_add_node if you need the node to be available immediately.

Parameters

Parameter	Type	Required	Description
title	string	Yes	Title for the capture
content_type	string	Yes	Type of content being captured (see values below)
why	string	Yes	Reason for capturing — stored as context metadata
url	string	No	Source URL of the content
raw_content	string	No	Raw text or Markdown content (1–500,000 characters)
captured_at	string	No	ISO 8601 timestamp override (defaults to now)

content_type values

Value	Description
article	Web article or blog post
tweet	Tweet or social media post
repo	GitHub repository
pdf	PDF document
document	Word doc or other document format
audio	Audio file or podcast
note	Plain text note
video	Video (YouTube, Loom, etc.)
image	Image file (PNG, JPEG, etc.)

Response

{
  "id": "...",
  "status": "pending"
}

The id is the capture ID. Once ingestion completes, a node will be created in your graph with a reference back to this capture.

Usage notes

• At least one of url or raw_content should be provided. If both are supplied, raw_content is used as the body and url is stored as the source reference.
• Indexing typically completes within one minute. Querying immediately after capture may not return the new node yet.
• The why field is required and stored alongside the node. It is used by retrieval tools to surface why you saved something, which improves context quality over time.