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

# Welcome to FastNode

Fast, reliable RPC and WebSocket access to 100+ blockchains.

**FastNode** gives developers, enterprises, and Web3 teams secure, low-latency access to blockchain nodes via a simple API — without the operational overhead of running and maintaining your own infrastructure.

This documentation covers everything you need to integrate FastNode into your application: generating an API key, sending your first request, streaming real-time data over WebSocket, and querying historical state from archive nodes.

{% hint style="success" %}
**New here?** Head to the [Quickstart](/getting-started/quickstart.md) and make your first request in under 2 minutes.
{% endhint %}

## What you can do with FastNode

* **RPC Full Nodes** — Full access to blockchain data (blocks, transactions, balances) and the ability to broadcast transactions to the network.
* **Public RPC Endpoints** — Free, keyless endpoints for selected networks — the fastest way to try FastNode.
* **WebSocket (WSS)** — Subscribe to new blocks, pending transactions, and log events in real time.
* **Archive Nodes** — Query the complete historical state of a chain, from the genesis block onward.
* **Monitoring** — Track your usage, request volume, and rate limits from the dashboard.

## Supported networks

FastNode supports **100+ blockchains**, including Bitcoin, Ethereum, and all major EVM-compatible chains, across both **mainnet** and **testnet** environments. Each network has its own dedicated docs page with the exact endpoint and supported methods.

## Get started in three steps

1. [Create an account](/getting-started/quickstart.md) with just your email.
2. [Generate an API key](/getting-started/api-keys.md) from the dashboard.
3. [Send your first request](/getting-started/quickstart.md#your-first-request).

***

Need a network or method that isn't listed yet? Reach out at **<support@fastnode.io>** — we may already be preparing support for it, or can spin up a dedicated node for you.