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

# Chainstack updates: January 7, 2025

> MEV protection toggle is now available for transactions on Chainstack Ethereum mainnet nodes, helping users avoid sandwich attacks and frontrunning.

**Nodes**. Now you can toggle MEV protection for your transactions on the Ethereum mainnet nodes. See [MEV protection](/docs/mev-protection).