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

# Indexers

<CardGroup cols={2}>
  <Card title="Common Data" href="/tooling-and-infra/indexers/common-data">
    Raw transactional data and frequently-used derived data like balances, transfers, and DEX trades
  </Card>

  <Card title="Indexing Frameworks" href="/tooling-and-infra/indexers/indexing-frameworks">
    Tools that allow developers to build custom calculators in response to events
  </Card>
</CardGroup>

<br />

The blockchain can be thought of as a list of blocks, transactions, and logs, as well as a series of global states. Indexers compute common transformations on this data to save downstream consumers the cost and complexity of doing so.

There are two main types of indexer services:

1. **[Data for common use cases](/tooling-and-infra/indexers/common-data)**: raw data (blocks, transactions, logs, traces) and derived data for common use cases (token balances, NFT holdings, DEX trades), computed across the entire blockchain
2. **[Indexing Frameworks](/tooling-and-infra/indexers/indexing-frameworks)** enable devleopers to build custom calculators for a specific smart contract

## Data for common use cases

Data providers offer raw and transformed data for common use cases via API or by streaming to your local environment.

Raw data includes:

* blocks, transactions, logs, traces (potentially decoded using contract ABIs)

Transformed data includes:

* balances (native tokens, ERC20s, NFTs)
* transfers (native tokens, ERC20s, NFTs)
* DEX trades
* market data
* and more

See [Common Data](/tooling-and-infra/indexers/common-data) for a fuller list of features and providers.

## Indexing Frameworks

Smart contract indexers are custom off-chain calculators for a specific smart contract. They maintain additional off-chain state and perform additional computation. Since blockchain data is public, anyone may deploy a subgraph involving state or logs from any smart contract.

See [Indexing Frameworks](/tooling-and-infra/indexers/indexing-frameworks) for a list of features and providers.