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v1

latestOpenAPI 3.0.0ISC2026-07-26318688.6 KB
Exchanges

Build multi exchange batch transaction data

Builds batched transaction data for all orders in a multi exchange group. Supports Solana (up to 10 deposits per batch) and EVM ERC-4337 (up to 20 legs per batch). All orders must share the same source token chain. For EVM the built UserOp is stored server-side until submitted, hence POST.

post/exchanges/multi/{multiId}/tx/build

Path parameters

multiIdstring required

The multi exchange group ID

Request body

senderstring required

Wallet address that will sign and fund the transaction(s)

houdiniIdsstring[]

Optional subset of orders to build for; defaults to all orders in the group

Response

Success

multiIdstring required
chainstring required

Chain kind of the from token (e.g. "solana", "evm")

depositNeededstring

How much more native ETH (wei) the SA needs before submission; "0" means already funded

saCurrentBalancestring

Current SA native balance in wei