> ## Documentation Index > Fetch the complete documentation index at: https://docs.houdiniswap.com/llms.txt > Use this file to discover all available pages before exploring further. # Get multi exchange batch transaction data (Solana) > Returns batched deposit-transaction data for a Solana multi exchange group. All orders must share the same source token chain; batches contain up to 10 deposit addresses each. This is read-only (no server-side side effect), so it is a GET. EVM multiswaps build a stored UserOp instead — use POST multi/{multiId}/tx/build for those. ## OpenAPI ````yaml https://api-partner.houdiniswap.com/v2/openapi.json get /exchanges/multi/{multiId}/tx openapi: 3.0.0 info: title: houdiniswap-backend version: 2.1.2 description: Houdiniswap Backend license: name: ISC contact: {} servers: - url: https://api-partner.houdiniswap.com/v2 security: [] paths: /exchanges/multi/{multiId}/tx: get: tags: - Exchanges summary: Get multi exchange batch transaction data (Solana) description: >- Returns batched deposit-transaction data for a Solana multi exchange group. All orders must share the same source token chain; batches contain up to 10 deposit addresses each. This is read-only (no server-side side effect), so it is a GET. EVM multiswaps build a stored UserOp instead — use POST multi/{multiId}/tx/build for those. operationId: GetMultiExchangeTxData parameters: - description: The multi exchange group ID in: path name: multiId required: true schema: type: string maxLength: 64 - in: query name: sender required: true schema: type: string - in: query name: houdiniIds required: false schema: type: string responses: '200': description: Success content: application/json: schema: $ref: '#/components/schemas/MultiExchangeTxResult' '404': description: Not found content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '422': description: Validation Failed content: application/json: schema: $ref: '#/components/schemas/ValidationError' '500': description: Internal Server Error content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' security: - apiKey: [] components: schemas: MultiExchangeTxResult: properties: multiId: type: string chain: type: string description: Chain kind of the from token (e.g. "solana", "evm") transactions: items: $ref: '#/components/schemas/TxBatch' type: array depositNeeded: type: string description: >- How much more native ETH (wei) the SA needs before submission; "0" means already funded saCurrentBalance: type: string description: Current SA native balance in wei required: - multiId - chain - transactions type: object additionalProperties: false ErrorResponse: properties: message: type: string code: type: string requestId: type: string required: - message - code type: object additionalProperties: false ValidationError: properties: message: type: string code: type: string requestId: type: string fields: $ref: '#/components/schemas/FieldErrors' required: - message - code - fields type: object additionalProperties: false TxBatch: properties: houdiniIds: items: type: string type: array description: HoudiniIds of the orders included in this batch txData: anyOf: - $ref: '#/components/schemas/EvmBatchTxSlimData' - $ref: '#/components/schemas/BatchTxData' description: Network-specific transaction data ready to broadcast required: - houdiniIds - txData type: object additionalProperties: false FieldErrors: properties: {} type: object additionalProperties: properties: value: {} message: type: string required: - message type: object EvmBatchTxSlimData: description: >- Slim response returned to the frontend — backend stores the full userOp in DB properties: userOpHash: type: string to: type: string data: type: string value: type: string chainId: type: number format: double tokenAmount: type: string required: - userOpHash - to - data - value - chainId - tokenAmount type: object additionalProperties: false BatchTxData: anyOf: - $ref: '#/components/schemas/SolanaBatchTxData' - $ref: '#/components/schemas/EvmBatchTxData' description: Union — add new network types here as they are supported SolanaBatchTxData: properties: data: type: string description: Serialized transaction bytes (base64) required: - data type: object additionalProperties: false EvmBatchTxData: properties: userOp: $ref: '#/components/schemas/EvmUserOp' userOpHash: type: string chainId: type: number format: double entryPoint: type: string to: type: string smartAccountAddress: type: string gasEstimate: $ref: '#/components/schemas/EvmGasEstimate' data: type: string value: type: string tokenAmount: type: string required: - userOp - userOpHash - chainId - entryPoint - to - smartAccountAddress - gasEstimate - data - value - tokenAmount type: object additionalProperties: false EvmUserOp: description: >- EntryPoint v0.7 unpacked UserOp. User pays gas from Smart Account balance — no paymaster. properties: sender: type: string nonce: type: string factory: type: string factoryData: type: string callData: type: string callGasLimit: type: string verificationGasLimit: type: string preVerificationGas: type: string maxFeePerGas: type: string maxPriorityFeePerGas: type: string signature: type: string paymaster: type: string paymasterData: type: string paymasterVerificationGasLimit: type: string paymasterPostOpGasLimit: type: string required: - sender - nonce - callData - callGasLimit - verificationGasLimit - preVerificationGas - maxFeePerGas - maxPriorityFeePerGas - signature type: object additionalProperties: false EvmGasEstimate: properties: gasCostWei: type: string gasCostNative: type: string nativeSymbol: type: string totalTransferAmountWei: type: string requiredSmartAccountBalanceWei: type: string required: - gasCostWei - gasCostNative - nativeSymbol - totalTransferAmountWei - requiredSmartAccountBalanceWei type: object additionalProperties: false securitySchemes: apiKey: type: apiKey name: Authorization in: header ````