DevelopersPlayground
DeFi appSwap, send sponsored transfers, and manage recurring buys and transaction rulesOverviewStart building with native frame transactionsQuickstartSet up the workspace and run a first transactionCreate a clientGive your existing viem client a native frame-transaction workflow. Keep your transport, chain configuration, and familiar public actions.Compose a transferChoose a recipient, draft limits, and who should pay for gas. FramePay generates the verification and execution frames for an EOA ETH transfer.Prepare a transactionBuild an unsigned frame transaction with explicit actions, gas limits, and fee bounds. The client checks the chain and resolves the ordinary account nonce.Sign locallyDelegate authorization to your signer while preserving the transaction you prepared. FramePay rejects changes to the signed envelope.Submit to the sidecarSend a signed frame transaction through the gateway’s standard alternative-mempool path. Get the expected transaction hash without silently retrying writes.Read frame receiptsDistinguish inclusion from successful execution. Inspect individual frame results or wait until every returned frame has succeeded.Inspect admissionRead the sidecar’s retained admission decision and rule checks. Find the stage that rejected a transaction without guessing from a generic RPC error.PlaygroundCreate an account and test the SDK on your local devnet
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THE FRAMEPAY LAB

Your first frame, live.

Explore the SDK one action at a time. Every result comes from your selected devnet.

Read the guide
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Transaction composerLOCAL DEVNET
01

Test account

SECP256K1

Create a disposable signer to try the full transaction flow.

The key stays in this page’s memory. Leaving or reloading clears it. Switching networks also discards this account. Use test funds only.

02

Transfer details

SELF-PAID
ETH

A sponsor covers gas, not the ETH being transferred. Use amount 0 to test sponsorship with an unfunded sender.

03

Who pays for gas?

04

Draft limits

Separate addresses with commas. These limits check this draft locally; they do not create ongoing account permissions or daily quotas.

Max gas price 2 gwei
Chain ID1337

Local transfer cap: 0.001 test ETH. EOA recipients only. Gas budgets use workshop defaults; no automatic estimation.

Start by creating a test account.

Execution inspectorDraft
01
VERIFY

Authorize execution & payment

DRAFT
02
SENDER

Execute the transfer

DRAFT
Your transaction starts here.

Prepare a transaction to inspect its frame envelope.

ethrex-eip8141-tracer 0x06
Session activity0 EVENTS
Ready when you are. Actions will appear here.
This module supports EOA ETH transfers with self-payment or a selected paymaster. PQ accounts, token reimbursement, and persistent rules are future integrations.Understand admission