---
title: "Get margin notes for a book chapter"
method: GET
path: "/reader/books/{book_id}/margin-notes"
tags: ["AI"]
---

# Get margin notes for a book chapter

`GET /reader/books/{book_id}/margin-notes`

Returns AI-generated margin notes (cross-book connections) for a chapter

## Path parameters

- `book_id` string, required

## Query parameters

- `since` integer
- `chapter` string

## Response `200`

Margin notes with server timestamp

- object
  - `data` SchemaMarginNote[]
    - `book_id` string
    - `cfi` string
    - `chapter` string
    - `confidence` number
    - `content` string
    - `ctime` integer
    - `dismissed` boolean
    - `helpful` boolean
    - `id` integer
    - `related_book_id` string
    - `related_book_title` string
    - `related_highlight` string
    - `user_id` integer
    - `utime` integer
  - `server_time` integer

## Other responses

- `400` — Bad Request

## Changes

- **2026-04-23** `20e19d9cbb5a` — 1 info
  - endpoint added
- **2026-03-21** `ffed97aaec4f` — 1 breaking
  - api path removed without deprecation

[Change history](https://skmtc.dev/lxpio/apis/omnigram-api/changes/reader/books/:book_id/margin-notes/get.md)

---

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