# Changelog

Changes to the LineHQ Public API, its webhooks and its refusal body, newest first.

## 14 October 2026

- The LineHQ Public API is documented in the open at [linehq.co.uk/developers](https://linehq.co.uk/developers): an overview, the API reference, guides, a Markdown version of every page, and [openapi.json](https://linehq.co.uk/developers/openapi.json).
- **Our promise.** Documented endpoints, documented webhook payloads and the `403` refusal body won't change in a way that breaks your integration without an entry here and at least 90 days' notice. New fields and new endpoints can appear at any time, so ignore fields you don't recognise. Endpoints and fields that aren't documented carry no promise and can change without notice.