---
title: "Get knowledge graph data"
method: GET
path: "/reader/knowledge"
tags: ["Reader"]
---

# Get knowledge graph data

`GET /reader/knowledge`

Returns concept tags and edges for the current user's knowledge network

## Query parameters

- `book_id` string
- `since` integer

## Response `200`

Knowledge graph with server timestamp

- object
  - `edges` SchemaConceptEdge[]
    - `ctime` integer
    - `id` integer
    - `reason` string
    - `source_id` integer
    - `target_id` integer
    - `user_id` integer
    - `weight` number
  - `nodes` SchemaConceptTag[]
    - `book_id` string
    - `ctime` integer
    - `id` integer
    - `name` string
    - `note_id` integer
    - `source` string
    - `user_id` integer
  - `server_time` integer

## Other responses

- `500` — Internal Server Error

---

[API](https://skmtc.net/lxpio/apis/omnigram-api.md) · [All operations](https://skmtc.net/lxpio/apis/omnigram-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/lxpio/omnigram-api/versions/58911ffb3093/schema)