---
title: "Changes to GET /public/get_book_summary_by_instrument"
method: GET
path: "/public/get_book_summary_by_instrument"
---

# Changes to GET /public/get_book_summary_by_instrument

`GET /public/get_book_summary_by_instrument`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 1 of 11 revisions.

- **2026-10-29** `82518876f388`: 8 breaking

## Changes

- **2026-10-29** `82518876f388`: 8 breaking
  - the response property `result/items/ask_price` became nullable for the status `200`
  - the response property `result/items/bid_price` became nullable for the status `200`
  - the response property `result/items/high` became nullable for the status `200`
  - the response property `result/items/last` became nullable for the status `200`
  - the response property `result/items/low` became nullable for the status `200`
  - the response property `result/items/mid_price` became nullable for the status `200`
  - the response property `result/items/price_change` became nullable for the status `200`
  - the response property `result/items/open_interest` became optional for the status `200`

---

[Operation](https://skmtc.dev/deribit/apis/deribit-api/docs/public/get_book_summary_by_instrument/get.md) - [API](https://skmtc.dev/deribit/apis/deribit-api.md) - [Page](https://skmtc.dev/deribit/apis/deribit-api/changes/public/get_book_summary_by_instrument/get)