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

# Overview

<Note>
  📘 Don’t have an API key?

  Go to [console.chainbase.com](https://console.chainbase.com/) to create an account and a new API key.

  For demo purposes, you can use the key "demo" to test out the API.
</Note>

## Web3 API

Web3 API is a suite of **REST** and **Stream** APIs that simplify your web3 development process with seamless access to on-chain and off-chain data. No matter what you're building, our Web3 API will provide the necessary data support, including balance, transaction history, ownership, and price information.

<CardGroup cols={2}>
  <Card title="Basic API" href="/api-reference/web3-api/basic" />

  <Card title="NFT API" href="/api-reference/web3-api/nft" />

  <Card title="Token API" href="/api-reference/web3-api/token" />

  <Card title="Balance API" href="/api-reference/web3-api/balance" />

  <Card title="Domain API" href="/api-reference/web3-api/domain" />
</CardGroup>

## Advanced API Suite

<CardGroup cols={2}>
  <Card title="SQL API" href="/api-reference/sql-api" />

  <Card title="Tops API" href="/api-reference/tops-api/tool/list-trending-topics" />
</CardGroup>