> ## 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: September 13, 2023

> Chainstack Subgraphs elastic indexer is now available for Ethereum Sepolia Testnet, Base Mainnet, and Base Testnet for indexing on-chain data at scale.

**Chainstack Subgraphs**. Elastic indexer is now available for Ethereum Sepolia Testnet and Base Mainnet and Testnet.