pyth-network_pyth-crosschain/apps/developer-hub/content/docs/express-relay/index.mdx

---
title: "Express Relay: Eliminate MEV with Priority Auctions"
description: >-
  Express Relay enables better orderflow mechanisms that eliminate MEV. Protocol developers can recapture MEV while searchers get unified access to opportunities.
icon: Gavel
full: true
---

# Introduction

Express Relay is a priority auction which enables better orderflow mechanisms that eliminate [Maximal Extractable Value](https://www.ledger.com/academy/glossary/maximal-extractable-value-mev) (MEV).

- **For Protocol Developers:** Express Relay allows protocols to recapture MEV and access a network of searchers for more competitive pricing than on-chain sources provide.
  With Express Relay, protocols get access to plug-and-play liquidity.

- **For Searchers:** Express Relay provides easy and unified access to a range of orderflow opportunities across integrated DeFi protocols.

## Integration

To integrate with Express Relay, you can integrate as a protocol (to power token swaps) or as a searcher.

<div className="grid grid-cols-1 md:grid-cols-2 gap-6 mt-8">
  <IntegrationCard
    href="./integrate-as-protocol"
    colorScheme="blue"
    title="Integrate as a Protocol"
    description="Power token swaps and recapture MEV with Express Relay integration"
    icon={
      <svg fill="none" stroke="currentColor" viewBox="0 0 24 24">
        <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M9 12h6m-6 4h6m2 5H7a2 2 0 01-2-2V5a2 2 0 012-2h5.586a1 1 0 01.707.293l5.414 5.414a1 1 0 01.293.707V19a2 2 0 01-2 2z" />
      </svg>
    }
  />

  <IntegrationCard
    href="./integrate-as-searcher"
    colorScheme="green"
    title="Integrate as a Searcher"
    description="Access unified orderflow opportunities across DeFi protocols"
    icon={
      <svg fill="none" stroke="currentColor" viewBox="0 0 24 24">
        <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M21 21l-6-6m2-5a7 7 0 11-14 0 7 7 0 0114 0z" />
      </svg>
    }
  />
</div>

## Learn

To learn more about Express Relay, refer to the following resources:

<div className="mt-8">
  <IntegrationCard
    href="./how-express-relay-works"
    colorScheme="purple"
    title="How Express Relay Works"
    description="Understand the mechanics behind Express Relay's priority auction system"
    icon={
      <svg fill="none" stroke="currentColor" viewBox="0 0 24 24">
        <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M8.228 9c.549-1.165 2.03-2 3.772-2 2.21 0 4 1.343 4 3 0 1.4-1.278 2.575-3.006 2.907-.542.104-.994.54-.994 1.093m0 3h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z" />
      </svg>
    }
  />
</div>