EVM Transactions

Build unsigned transactions for token swaps.

Get Buy Transaction

Build an unsigned transaction for buying tokens.

Endpoint: /evm/buy/transaction

Parameter	Type	Required	Description
`chain`	string	Yes	Chain identifier
`token`	string	Yes	Token contract address
`swapMode`	string	Yes	`ExactIn` or `ExactOut`
`amountIn`	string	Yes	Amount of native currency in wei
`wallet`	string	Yes	Wallet address
`slippageBps`	number	No	Slippage tolerance in basis points (default: 100 = 1%)
`feeBps`	number	No	Fee in basis points (0-175)
`feeRecipient`	string	No	Wallet to receive fees
`sendRoute`	string	No	`Public`, `Private`, or `Both` for MEV protection

Example:

typescript

socket.emit("/evm/buy/transaction", {
  chain: "eth",
  token: "0x6982508145454Ce325dDbE47a25d4ec3d2311933",
  swapMode: "ExactIn",
  amountIn: "1000000000000000000",
  wallet: "0x10a64c6d7f12c47b7c66c5b4e20e72bc1fcd5d9e",
  slippageBps: 100,
  sendRoute: "Private",
});

Get Sell Transaction

Endpoint: /evm/sell/transaction

Same parameters as buy transaction. May require a permit for V3 pools.

Get Approve Transaction

Build a transaction to approve token spending.

Endpoint: /evm/approve/transaction

Parameter	Type	Required	Description
`chain`	string	Yes	Chain identifier
`token`	string	Yes	Token contract address
`wallet`	string	Yes	Wallet granting approval
`spender`	string	Yes	Contract address to approve