> ## Documentation Index
> Fetch the complete documentation index at: https://krono.fabianpiper.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Orderbook Event Listeners

> Overview of all event subscription methods in the Orderbook class.

The `Orderbook` class provides high-level helper methods to subscribe to data updates, status changes, and errors. These listeners are the primary way to integrate the orderbook into your UI or data processing logic.

## Core Listeners

* [onData](/docs/core/api/orderbook/onData): Triggers on processed (throttled/debounced) updates.
* [onStatusUpdate](/docs/core/api/orderbook/onStatusUpdate): Triggers when connection state changes.
* [onError](/docs/core/api/orderbook/onError): Triggers when an error occurs.

## Internal Listeners

* [onRawDataUpdate](/docs/core/api/orderbook/onRawDataUpdate): Direct socket updates (high frequency).
* [onHistoryUpdate](/docs/core/api/orderbook/onHistoryUpdate): Triggers when a snapshot is archived.
* [onConfigUpdate](/docs/core/api/orderbook/onConfigUpdate): Triggers when settings change.