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update Reference Material
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‎pages/express-relay/_meta.json‎

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"websocket-api-reference": "Websocket API Reference",
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"contract-addresses": "Contract Addresses",
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"errors": "Error Codes",
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"examples": {
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"title": "Example Application ↗",
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"href": "https://github.com/pyth-network/pyth-examples/tree/6cea7c9602c7949c6dacc94aec44c0fe78ccb128/express-relay/easy_lend",
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"newWindow": true
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},
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"-- Understand Express Relay": {
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"title": "Understanding Express Relay",
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"type": "separator"

‎pages/express-relay/contract-addresses.mdx‎

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# Contract Addresses
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This section covers the contract addresses for Express Relay on different networks. Please navigate to the relevant section below.
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This section covers the contract addresses for Express Relay. Please navigate to the relevant section below.
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- [EVM](contract-addresses/evm)
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- [SVM](contract-addresses/svm)

‎pages/express-relay/contract-addresses/_meta.json‎

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{
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"evm": "EVM",
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"svm": "SVM"
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}

‎pages/express-relay/contract-addresses/evm.mdx‎

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‎pages/express-relay/contract-addresses/svm.mdx‎

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Express Relay is currently deployed on the following SVM environments:
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<Tabs items={['Solana Mainnet-Beta Testing']}>
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<Tabs items={['Prod (Solana Mainnet-Beta)', 'Testing (Solana Mainnet-Beta)']}>
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<Tabs.Tab>
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Auction Server endpoint: https://pyth-express-relay-mainnet.asymmetric.re/
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### Prod
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**Network Details:**
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<AddressSvmTable
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explorer={"https://solscan.io/account/$ADDRESS"}
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entries={[
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{
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name: "Express Relay Program",
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value: "PytERJFhAKuNNuaiXkApLfWzwNwSNDACpigT3LwQfou",
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link: true,
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},
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{
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name: "Limo Limit Order Program",
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value: "LiMoM9rMhrdYrfzUCxQppvxCSG1FcrUK9G8uLq4A1GF",
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link: true,
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},
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{
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name: "Chain Id",
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value: "solana",
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link: false,
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},
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{
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name: "Public RPC",
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value: "https://api.mainnet-beta.solana.com",
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link: false,
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},
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{
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name: "Limo Global Order Config",
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value: "prod7Mog8r56sn5dPwze8nVdf94veEawdxNNqd5v7A1",
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link: true,
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},
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{
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name: "Frontend",
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value: "https://swap.kamino.finance",
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link: false,
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},
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]}
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/>
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</Tabs.Tab>
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<Tabs.Tab>
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<Callout type="warning" emoji="⚠️">
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To simulate real performance conditions and activity, the staging/testing
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environment for Solana is on the mainnet-beta network. This environment is not
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for production use and should only be used for testing.
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</Callout>
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<Tabs.Tab>
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Auction Server endpoint: https://per-staging.dourolabs.app/
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### Solana
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### Testing
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**Network Details:**
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<AddressSvmTable
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explorer={"https://solscan.io/account/$ADDRESS"}
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entries={[
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{
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name: "Express Relay Program",
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name: "Express Relay Program (Swaps)",
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value: "stag1NN9voD7436oFvKmy1kvRZYLLW8drKocSCt2W79",
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link: true,
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},
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{
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name: "Express Relay Program (Limit Orders)",
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value: "PytERJFhAKuNNuaiXkApLfWzwNwSNDACpigT3LwQfou",
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link: true,
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},

‎pages/express-relay/errors.mdx‎

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This section covers error codes one may run into during integration. Please see the relevant section below for the environment of interest.
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- [EVM](errors/evm)
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- [SVM](errors/svm)

‎pages/express-relay/errors/_meta.json‎

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{
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"evm": "EVM",
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"svm": "SVM"
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}

‎pages/express-relay/errors/evm.mdx‎

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‎pages/express-relay/errors/svm.mdx‎

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## ExpressRelay
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| Error | Explanation |
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| ----------------------------- | ------------------------------------------------------------------------------------------- |
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| `FeeSplitLargerThanPrecision` | The proposed fee split is invalid (split is larger than `FEE_SPLIT_PRECISION`, 10000) |
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| `FeesHigherThanBid` | The fees to pay out exceed the value of the bid amount. |
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| `DeadlinePassed` | The bid is no longer valid, as the Unix time deadline has passed. |
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| `InvalidCPISubmitBid` | The `SubmitBid` instruction should not be called via CPI. |
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| `MissingPermission` | The transaction is missing a `SubmitBid` instruction with the matching permission key. |
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| `MultiplePermissions` | The transaction should not contain more than one `SubmitBid` instruction. |
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| `InsufficientSearcherFunds` | The searcher lacks the funds to pay the specified bid amount. |
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| `InsufficientRent` | The fees splits received by different parties must be sufficient to cover the account rent. |
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| Error | Explanation |
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| ----------------------------- | ----------------------------------------------------------------------------------------------- |
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| `FeeSplitLargerThanPrecision` | The proposed fee split is invalid (split is larger than `FEE_SPLIT_PRECISION`, 10000) |
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| `FeesHigherThanBid` | The fees to pay out exceed the value of the bid amount. |
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| `DeadlinePassed` | The bid is no longer valid, as the Unix time deadline has passed. |
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| `InvalidCPISubmitBid` | The `SubmitBid` instruction should not be called via CPI. |
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| `MissingPermission` | The transaction is missing a `SubmitBid` instruction with the matching permission key. |
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| `MultiplePermissions` | The transaction should not contain more than one `SubmitBid` instruction. |
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| `InsufficientSearcherFunds` | The searcher lacks the funds to pay the specified amount. |
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| `InsufficientRent` | The fees splits received by different parties must be sufficient to cover the account rent. |
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| `InvalidReferralFee` | The provided referral fee in the swap instruction data is too high to be a valid number of bps. |
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| `InsufficientUserFunds` | The user lacks the funds to pay the specified amount in the swap instruction. |

‎pages/express-relay/index.mdx‎

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# Introduction
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Express Relay is a priority auction that enables protocols to eliminate [Maximal Extractable Value](https://www.ledger.com/academy/glossary/maximal-extractable-value-mev) (MEV).
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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).
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- **For Protocol Developers:** Express Relay allows protocols to recapture MEV and access a network of searchers.
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With Express Relay, protocols don't need to spend time and energy bootstrapping a protocol-specific searcher network.
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- **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.
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With Express Relay, protocols get access to plug-and-play liquidity.
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- **For Searchers:** Express Relay provides easy and unified access by aggregating liquidation and other MEV opportunities across integrated DeFi protocols.
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Searchers integrate once and gain access to all existing and future opportunities.
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- **For Searchers:** Express Relay provides easy and unified access to a range of orderflow opportunities across integrated DeFi protocols.
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## Integration
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To integrate with Express Relay, you can integrate as a protocol or as a searcher.
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To integrate with Express Relay, you can integrate as a protocol (to power market orders/swaps) or as a searcher.
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<Cards>
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<Card
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To learn more about Express Relay, refer to the following resources:
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<Cards>
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<Card
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icon={<QuestionMarkIcon />}
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title="How Express Relay Works"
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href="./express-relay/how-express-relay-works "
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/>
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<Card
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icon={<CodeIcon />}
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title="Example Protocol Integration"
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href="https://github.com/pyth-network/pyth-examples/tree/6cea7c9602c7949c6dacc94aec44c0fe78ccb128/express-relay/easy_lend"
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/>
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<Card
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icon={<QuestionMarkIcon />}
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title="How Express Relay Works"
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href="./express-relay/how-express-relay-works "
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/>
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</Cards>

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