Wallet APIs

Simple APIs to send transactions with advanced capabilities. Gas sponsorship, batching, retries, and more — all handled for you.

Wallet APIs are the transaction layer for embedded wallets. Bring a signer for login and keys, such as Privy, Turnkey, or any viem-compatible wallet, and we sponsor gas, batch calls, and upgrade the wallet to a smart wallet with EIP-7702. Signers that can't sign EIP-7702 authorizations use non-7702 mode instead. Account Kit's built-in signer is deprecated, and Wallet APIs are its supported successor.

Quickstart →

Send your first gasless transaction in under 5 minutes.

1. Prepare

Build one or more calls - transfer, swap, — anything.

2. Sign

Bring your own embedded wallet or key to sign.

3. Send

We submit, optimize gas, sponsor fees, and retry if needed.

4. Track

Get status and transaction data through simple endpoints.

Gas sponsorship

Cover gas fees so users never need ETH and you never hold crypto on your balance sheet. Set custom spending rules.

ERC-20 gas payments

Let users pay gas with USDC, USDT, or any ERC-20 token instead of the native currency.

Solana sponsorship

Sponsor fees & rent and say goodbye to "insufficient fees".

Batch transactions

Combine multiple calls into a single atomic transaction — approve + swap, mint + transfer, and more.

Automatic retries

Stuck transactions are automatically re-priced and resubmitted so they land onchain.

Session keys

Grant scoped, time-limited signing permissions for autonomous signing.

Parallel transactions

Fire multiple transactions simultaneously without nonce collisions.

Token swaps

Same-chain and cross-chain token swaps with built-in routing.

Track status

Track the status of the transaction via APIs.

Debug transactions

Debug failed transactions and reverts.

EIP-7702

Upgrade embedded EOA users to smart wallets.

// Prepare, sign, and send — in one call
const { id } = await client.sendCalls({
  calls: [
    { to: "0xContractA", data: "0x..." },
    { to: "0xContractB", data: "0x..." },
  ],
});
 
// Track
const status = await client.waitForCallsStatus({ id });