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

# Chainstack updates: November 29, 2023

> Starknet mainnet and testnet nodes on Chainstack now support WebSocket connections, enabling real-time event subscriptions for Cairo zk-rollup applications.

**Starknet**. Starknet mainnet and testnet nodes now support WebSocket.