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# Relay

> Relay is interoperability infrastructure for the onchain money stack — a decentralized protocol that connects wallets, payment processors, and blockchains for instant cross-chain transactions.

Relay provides the infrastructure that wallets, apps, and payment processors use to execute cross-chain swaps, bridging, and payments. Supporting 85+ chains, Relay is used by 6M+ users and powers instant cross-chain transactions across the onchain ecosystem.

For comprehensive technical documentation, API references, SDK guides, and protocol details, see [docs.relay.link](https://docs.relay.link).

## Documentation

- [Relay Docs](https://docs.relay.link): Full technical documentation, API references, SDK guides, and protocol details
- [Relay Docs llms.txt](https://docs.relay.link/llms.txt): LLM-optimized documentation index — start here for comprehensive technical context
- [What is Relay?](https://docs.relay.link/what-is-relay): Overview of Relay and how it works
- [API Reference](https://docs.relay.link/references/api/overview): REST API documentation
- [SDK / RelayKit](https://docs.relay.link/references/relay-kit/sdk/installation): Client SDK for integrating Relay
- [Protocol Overview](https://docs.relay.link/references/protocol/overview): How the Relay Protocol works
- [Supported Chains](https://docs.relay.link/references/api/api_resources/supported-chains): List of supported networks

## Code

- [GitHub](https://github.com/relayprotocol): Open source repositories
- [RelayKit](https://github.com/relayprotocol/relay-kit): UI components and SDK

## Community & Updates

- [X / Twitter](https://x.com/RelayProtocol): @RelayProtocol
- [Relay Blog](https://relay.link/blog): Blog — product updates, announcements, and ecosystem coverage

## Products

- [Relay App](https://relay.link): Cross-chain bridge and swap interface