> For the complete documentation index, see [llms.txt](https://docs.assetchain.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.assetchain.org/tools/indexer.md).

# Indexer

Indexers facilitate streamlined access to on-chain data, encompassing transaction histories, smart contract states, and event logs.

Asset Chain currently supports the project below, to enable swift and effective data access and query functionality.\\

### [Subquery](https://subquery.network/)

Subquery is a leading blockchain data indexer that provides developers with fast, flexible, universal, open source and decentralised APIs for web3 projects.

Subquery supports many ecosystems including Asset Chain, Ethereum, Cosmos, Near, Polygon, Polkadot, Algorand, and more.

{% embed url="<https://academy.assetchain.org/module-4-intermediate-tutorials/setting-up-an-indexer>" %}