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

# What is Relay?

> The fastest and cheapest way to bridge & transact across chains

Relay is a multichain payments network, designed to make swapping and transacting across 100s of chains delightfully simple. Since launching in 2024, Relay has served **5M users**, processed **50M transactions**, and driven **\$5B+ in volume** across **85+ networks**.

It combines two core components:

* Instant low cost cross-chain intents, powered by the [Relay Protocol](/references/protocol/overview)
* Comprehensive DEX Meta-Aggregation across 85 chains

This makes Relay a powerful solution for a diverse set of use cases:

<Columns cols={3}>
  <Card title="Bridging & Onboarding" icon="link" href="/use-cases/bridging" cta="Learn More">
    Instant Bridging between 85+ Chains
  </Card>

  <Card title="Swaps" href="/use-cases/cross-chain-swaps" icon="right-left" cta="Learn More">
    Same-chain & Cross-chain Swaps on Every Chain
  </Card>

  <Card title="Call Execution" href="/use-cases/calling" icon="hexagon-nodes" cta="Learn More">
    Pay for Txs with Tokens on any Chain
  </Card>
</Columns>

To see Relay in action, and test supported routes, try the [Relay App](https://relay.link/bridge).

To start building, check out the [Quickstart Guide](/references/api/quickstart).

***

## The Relay Stack

Built as a full-stack solution for every layer of the multichain payments experience:

### Relay App

**For everyone who wants to swap tokens across chains** - The fastest way to go from any token to any token across chains. Swap ETH on Ethereum for SOL on Solana in one transaction — built on the same infrastructure that powers enterprise customers.

[Try the App](https://relay.link/)

### Relay API

**For developers building multichain experiences** - One integration, 75+ chains, zero complexity. Abstract the hardest parts of multichain development:

* **Bridge instantly** between chains with predictable fees
* **Swap seamlessly** using meta-aggregation across all major DEXs
* **Deliver payments-grade UX** with gas sponsorship, guaranteed rates, and SLAs

Whether you're building wallets, marketplaces, or consumer apps, Relay makes crosschain payments fast, reliable, and invisible.

[View Documentation](/references/api/overview)

### Relay Protocol

**The network powering it all** - The open system connecting users to relayers who execute onchain actions with maximum capital efficiency. Designed for low gas costs, rapid chain expansion, and enterprise-grade reliability.

[Learn More](/references/protocol/overview)

***

## Payments-Grade Reliability

Unlike traditional bridges, Relay delivers the reliability users expect from modern payments:

* **99.9% uptime** across 85+ networks
* **Fast execution** instead of multi-minute wait times
* **Automatic redundancy** systems ensuring transactions complete
* **Clear completion signals** for apps and users

***

## Trusted by Leading Teams

**Chain Expansion**: Alchemy, Conduit, and Caldera rely on Relay to provide payment rails to every rollup out of the box.

**Chain Abstraction**: OpenSea powers crosschain mints through Relay so collectors never worry about which chain they're on. Phantom collapses complex swaps into seamless flows.

**Multichain Infrastructure**: Apps like OneBalance route execution through Relay, letting users access opportunities across chains as easily as checking their balance.

***

## Get Started

**For Users**: [Try the Relay App](https://relay.link/) to swap any token across any chain instantly.

**For Teams & Developers**: Check out our [Quickstart Guide](/references/api/quickstart) to add multichain payments to your app.

***

*Contact us about enterprise features including dedicated support, custom SLAs, and priority routing.*