getRequirements

Returns the list of steps required to send a PreparedAction: nothing, an EIP-2612 permit signature, or an ERC-20 approve. This is a pure read. It never sends approve and never signs.

The pattern matches Morpho's getRequirements: the app shows the next step, the user confirms it, then you call executePrepared.

Import

import { createSv3Client } from "@repo/contract-client";

Usage

const prepared = await sv3.trade.prepareBuyForReserveBudget({
  market,
  amount: parseUsdc("10"),
  slippageBps: 100n,
});

const requirements = sv3.authorization.getRequirements(prepared, {
  token: context.snapshot.tokens.reserve,
  spender: market,
  amount: prepared.constraints.maxIn ?? parseUsdc("10"),
  allowance: context.reserveAllowance,
  nonce: context.reservePermitNonce,
  isContractWallet: context.codeSize > 0n,
  tokenName: "USD Coin",
  mode: "auto",
});

for (const step of requirements) {
  if (step.type === "none") continue;
  if (step.type === "permit-signature") {
    const signature = await walletClient.signTypedData(step.typedData);
    await sv3.transactions.executePrepared(prepared, { permit: signature });
  }
  if (step.type === "approval") {
    // send approve yourself, then executePrepared
  }
}

mode: 'auto' picks permit for EOAs and allowance for contract wallets unless you constructed the client with permitCapability: 'eip2612'.

Return Value

readonly Requirement[]

`type`	Meaning
`none`	Allowance already covers `amount`
`permit-signature`	Collect EIP-2612 `signTypedData` using `typedData`
`approval`	Send `approve(spender, amount)` yourself (`unlimited` is always `false`)
`wallet-client`	Bind a wallet before sending
`account-match`	Prepared account ≠ client account
`chain-switch`	Wallet is on the wrong chain

Parameters

prepared

Type: PreparedAction

From sv3.trade.prepare*.

sv3.authorization.getRequirements(prepared, extra);

extra.token

Type: Address

Token to spend (USDC on a buy, AVM on a sell).

extra.spender

Type: Address

Almost always the FloorMarket.

extra.amount

Type: bigint

Amount the market will pull.

extra.allowance

Type: bigint

Current allowance, from getTradeContext.

extra.nonce

Type: bigint

EIP-2612 nonce for the owner.

extra.isContractWallet

Type: boolean

context.codeSize > 0n.

extra.tokenName

Type: string

EIP-712 domain name ('USD Coin', or the AVM name).

extra.mode

Type: 'auto' | 'permit' | 'allowance'

sv3.authorization.getRequirements(prepared, {
  token,
  spender: market,
  amount,
  allowance,
  nonce,
  isContractWallet: false,
  tokenName: "USD Coin",
  mode: "auto",
});

Tips

Never set unlimited: true. The SDK refuses infinite approvals.
Pass a collected permit into executePrepared(prepared, { permit }). Allowance-route approvals are ordinary ERC-20 writes you send yourself.