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

# Welcome to CoinGecko API

#### CoinGecko is the world's largest independent crypto data aggregator

The CoinGecko API provides comprehensive crypto market data through REST endpoints, WebSocket streams, Webhooks, and AI-native tools.

* **[CoinGecko](https://www.coingecko.com)** — 1,500+ exchanges, 18,000+ coins, 600+ categories
* **Onchain DEX data** — 200+ blockchain networks, 1,800+ DEXes, 39M+ tokens, powered by [GeckoTerminal](https://www.geckoterminal.com)

## Get Started

<CardGroup cols={2}>
  <Card title="Set Up Your API Key" icon="key" href="/docs/setting-up-your-api-key">
    Create your CoinGecko API key and start making requests.
  </Card>

  <Card title="Data Delivery Methods" icon="satellite-dish" href="/docs/data-delivery-methods">
    Choose between REST API, WebSocket, and Webhooks.
  </Card>

  <Card title="AI Integration" icon="robot" href="/ai-integration">
    MCP servers, SKILL, CLI, and coding agent setup guides.
  </Card>

  <Card title="Common Use Cases" icon="graduation-cap" href="/docs/common-use-cases">
    Trading, portfolio tracking, market research, DeFi analytics, and more.
  </Card>
</CardGroup>

## Build

<CardGroup cols={2}>
  <Card title="Pro API Reference" icon="bolt" href="/reference/endpoint-overview">
    Full endpoint reference for paid plan users.
  </Card>

  <Card title="Demo API Reference" icon="code" href="/demo/reference/endpoint-overview">
    Free Demo API with limited endpoints and rate limits.
  </Card>

  <Card title="WebSocket" icon="signal-stream" href="/websocket">
    Ultra-low latency streaming with persistent connections.
  </Card>

  <Card title="Webhooks" icon="webhook" href="/webhooks">
    Receive automated metadata updates via HTTP callbacks.
  </Card>
</CardGroup>

## Explore

<CardGroup cols={2}>
  <Card title="SDK" icon="cube" href="/docs/sdk">
    Official TypeScript and Python SDKs.
  </Card>

  <Card title="Spreadsheet Add-ons" icon="table" href="/docs/spreadsheet">
    Google Sheets and Excel integrations for crypto data.
  </Card>

  <Card title="How-To" icon="book-open" href="/docs/how-to">
    Querying coin data, onchain data, and common API patterns.
  </Card>

  <Card title="Endpoint Showcase" icon="image" href="/docs/endpoint-showcase">
    See which API endpoints power CoinGecko and GeckoTerminal features.
  </Card>
</CardGroup>

***

<a href="/docs/data-delivery-methods">
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    <img src="https://mintcdn.com/coingecko/i9l2MT4etZGYjSx8/assets/images/data-delivery-banner.png?fit=max&auto=format&n=i9l2MT4etZGYjSx8&q=85&s=2cebb5266f39b2ffe60b49ccc6d31760" alt="Data Delivery Methods — REST API, WebSocket, and Webhooks" noZoom width="1200" height="319" data-path="assets/images/data-delivery-banner.png" />
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</a>