---
title: Data and analytics
description: How to get onchain analytics and data for use in your dapps
lang: en
---

## Introduction {#introduction}

As utilization of the network continues to grow, an increasing amount of valuable information will exist in the onchain data. As the volume of data rapidly increases, calculating and aggregating this information to report upon or drive a dapp can become a time and process heavy endeavor.

Leveraging existing data providers can expedite development, produce more accurate results, and reduce ongoing maintenance efforts. This will enable a team to concentrate on the core functionality their project is trying to provide.

## Prerequisites {#prerequisites}

You should understand the basic concept of [Block Explorers](/developers/docs/data-and-analytics/block-explorers/) in order to better understand using them in the data analytics context. In addition, familiarize yourself with the concept of an [index](/glossary/#index) to understand the benefits they add to a system design.

In terms of architectural fundamentals, understanding what an [API](https://www.wikipedia.org/wiki/API) and [REST](https://www.wikipedia.org/wiki/Representational_state_transfer) are, even in theory.

## Block explorers {#block-explorers}

Many [Block Explorers](/developers/docs/data-and-analytics/block-explorers/) offer [RESTful](https://www.wikipedia.org/wiki/Representational_state_transfer) [API](https://www.wikipedia.org/wiki/API) gateways that will provide developers visibility into real-time data on blocks, transactions, validators, accounts, and other onchain activity.

Developers can then process and transform this data to give their users unique insights and interactions with the [blockchain](/glossary/#blockchain). For example, [Etherscan](https://etherscan.io) and [Blockscout](https://eth.blockscout.com) provide execution and consensus data for every 12s slot.

## The Graph {#the-graph}

[The Graph](https://thegraph.com/) is an indexing protocol that provides an easy way to query blockchain data through open APIs known as subgraphs.

With The Graph, developers can benefit from:

- Decentralized indexing: Enables indexing blockchain data through multiple indexers, thus eliminating any single point of failure
- GraphQL queries: Provides a powerful GraphQL interface for querying indexed data, making data retrieval super simple
- Customization: Define your own logic for transforming & storing blockchain data, and reuse subgraphs published by other developers on The Graph Network

Follow this [quick-start](https://thegraph.com/docs/en/quick-start/) guide to create, deploy, and query a subgraph within 5 minutes.

## Client diversity {#client-diversity}

[Client diversity](/developers/docs/nodes-and-clients/client-diversity/) is important for the overall health of the Ethereum network because it provides resilience to bugs and exploits. There are now several client diversity dashboards including [clientdiversity.org](https://clientdiversity.org/), [rated.network](https://www.rated.network), [supermajority.info](https://supermajority.info//) and [Ethernodes](https://ethernodes.org/).

## Dune Analytics {#dune-analytics}

[Dune Analytics](https://dune.com/) pre-processes blockchain data into relational database (DuneSQL) tables, allows users to query blockchain data using SQL and build dashboards based on query results. Onchain data are organized into 4 raw tables: `blocks`, `transactions`, (event) `logs` and (call) `traces`. Popular contracts and protocols have been decoded, and each has its own set of event and call tables. Those event and call tables are processed further and organized into abstraction tables by the type of protocols, for example, dex, lending, stablecoins, etc.

## SQD {#sqd}

[SQD](https://sqd.dev/) is a decentralized hyper-scalable data platform optimized for providing efficient, permissionless access to large volumes of data. It currently serves historical on-chain data, including event logs, transaction receipts, traces, and per-transaction state diffs. SQD offers a powerful toolkit for creating custom data extraction and processing pipelines, achieving an indexing speed of up to 150k blocks per second.

To get started, visit the [documentation](https://docs.sqd.dev/) or see [EVM examples](https://github.com/subsquid-labs/squid-evm-examples) of what you can build with SQD.

## SubQuery Network {#subquery-network}

[SubQuery](https://subquery.network/) is a leading data indexer that gives developers fast, reliable, decentralized, and customized APIs for their web3 projects. SubQuery empower developers from over 165+ ecosystems (including Ethereum) with rich indexed data to build an intuitive and immersive experiences for their users. The SubQuery Network powers your unstoppable apps with a resilient and decentralized infrastructure network. Use SubQuery's blockchain developer toolkit to build the web3 applications of the future, without spending time building a custom backend for data processing activities.

To start, visit the [Ethereum quick start guide](https://academy.subquery.network/quickstart/quickstart_chains/ethereum-gravatar.html) to start indexing Ethereum blockchain data in minutes in a local Docker environment for testing before going live on a [SubQuery's managed service](https://managedservice.subquery.network/) or on [SubQuery's decentralised network](https://app.subquery.network/dashboard).

## Codex {#codex}

[Codex](https://www.codex.io/) is a real-time blockchain data API providing enriched data for 70 million+ tokens across 80+ networks. Developers can access structured token pricing, wallet balances, transaction history, and aggregated analytics (volume, liquidity, unique wallets) without maintaining custom indexing infrastructure. Codex supports sub-second data delivery via WebSocket and webhook integrations.

To get started, visit the [documentation](https://docs.codex.io), try the [Explorer](https://docs.codex.io/explore), or sign up at the [dashboard](https://dashboard.codex.io/signup).

## Mobula {#mobula}

[Mobula](https://mobula.io/) is a high-performance crypto data API providing real-time and historical market data, token metadata, wallet portfolios, and on-chain analytics across 90+ blockchains. Developers can access REST and GraphQL endpoints for token prices, market caps, trading volumes, liquidity data, and multi-chain wallet balances without running their own infrastructure. Mobula offers both free (100K requests/month) and paid plans for production applications.

To get started, visit the [documentation](https://docs.mobula.io), explore the [API reference](https://docs.mobula.io/reference/), or sign up at the [dashboard](https://mobula.io/).

## EVM Query Language {#evm-query-language}

EVM Query Language (EQL) is an SQL-like language designed to query EVM (Ethereum Virtual Machine) chains. EQL's ultimate goal is to support complex relational queries on EVM chain first-class citizens (blocks, accounts, and transactions) while providing developers and researchers with an ergonomic syntax for everyday use. With EQL, developers can fetch blockchain data using familiar SQL-like syntax and eliminate the need for complex boilerplate code. EQL supports standard blockchain data requests (e.g., retrieving an account's nonce and balance on Ethereum or fetching the current block size and timestamp) and is continually adding support for more complex requests and featuresets.

## Envio {#envio}

[Envio](https://envio.dev/) is an indexing framework that turns onchain events into a queryable GraphQL API. It supports Ethereum and any EVM-compatible chain. Developers write event handlers in TypeScript, JavaScript, or ReScript to serve real-time and historical data, with reorg support, multichain indexing, and managed hosting on Envio Cloud or self-hosting.

To get started, follow the [HyperIndex quickstart](https://docs.envio.dev/docs/HyperIndex/quickstart) to create, deploy, and query an indexer.

## Further Reading {#further-reading}

- [Exploring Crypto Data I: Data Flow Architectures](https://web.archive.org/web/20250125012042/https://research.2077.xyz/exploring-crypto-data-1-data-flow-architectures)
- [Graph Network Overview](https://thegraph.com/docs/en/about/)
- [Graph Query Playground](https://thegraph.com/explorer/subgraph/graphprotocol/graph-network-mainnet?version=current)
- [API code examples on EtherScan](https://etherscan.io/apis#contracts)
- [API documentation on Blockscout](https://docs.blockscout.com/devs/apis)
- [Beaconcha.in Beacon Chain explorer](https://beaconcha.in)
- [Dune Basics](https://docs.dune.com/#dune-basics)
- [SubQuery Ethereum Quick Start Guide](https://academy.subquery.network/indexer/quickstart/quickstart_chains/ethereum-gravatar.html)
- [SQD Network Overview](https://docs.sqd.dev/)
- [EVM Query Language](https://web.archive.org/web/20250719151453/https://www.eql.sh/blog/alpha-release-notes)

## Tutorials: Data & analytics / SQL on Ethereum {#tutorials}

- [Learn Foundational Ethereum Topics with SQL](/developers/tutorials/learn-foundational-ethereum-topics-with-sql/) _– Query on-chain Ethereum data with SQL to understand transactions, blocks, and gas fundamentals._