Live · x402 · Robinhood Chain
Pay for a chain read
Paste a transaction, an allowance, a balance, a nonce, a block, a contract, the two USDG balances, open router approvals, logs, a call, or a storage slot. Robinhood Chain is read first. The 402 shows what came back. Each of these reads is 4 USDG as a USDG transfer on Robinhood Chain. A missing transaction, a bad height, a bad slot, or a failed call is not charged.
Transaction receipt
Status, fee, value, and the token moves in the logs. 4 USDG. A pending transaction is returned as pending.
Token allowance
How much one spender may still move, and the owner’s balance of that token. 4 USDG. Unlimited is reported as unlimited.
Token balance
One token, one wallet, including coins outside the busy index. 4 USDG. Unread decimals stay unread.
Next nonce
Confirmed count, pending count, and how many are still in flight. 4 USDG.
One block
Transaction count, gas fill, the USDG cost of a plain transfer, and the miner. 4 USDG. A height Robinhood Chain does not have is not charged.
Contract code
Bytecode size, supply, and whether the address answers ERC-721 or ERC-1155. 4 USDG. A quiet result is not a safety certificate.
Gas and token USDG
The 18-decimal gas balance beside the 6-decimal USDG token. 4 USDG. Spending the whole token balance can still fail if gas is empty.
Router allowances
Whether Permit2, the Universal Router, and SwapRouter02 can still move one token. 4 USDG.
Recent logs
Events on one contract in the newest blocks. Leave the topic blank to take every log. 4 USDG. A failed log read is not charged.
Name a call
A 4-byte selector, calldata, or a Robinhood Chain transaction hash. 4 USDG. An unnamed selector is reported as unnamed.
Storage slot
One word from a contract. The slot is a decimal number or a 0x hex word. 4 USDG. A slot that does not fit is not charged.
How to read this
- What you pay
- A receipt is 4 USDG. An allowance is 4 USDG. A balance is 4 USDG. A nonce is 4 USDG. A block is 4 USDG. Contract code is 4 USDG. Gas and token USDG are 4 USDG. Router allowances are 4 USDG. Logs are 4 USDG. A named call is 4 USDG. A storage slot is 4 USDG. The wallet sends USDG to 0x7Cf72AbE2DC8EbD5130477B8d05EC25d9D89D4CF. A signed-in account can pay the same whole number from its Vexuno balance. That balance is not Robinhood Chain USDG.
- What comes back
- The unpaid call already read Robinhood Chain and shows a preview. After payment the receipt lists status, block, fee, value, and up to eight token moves. The allowance lists the remaining amount, or unlimited, plus the owner balance. The balance is one token for one wallet. The nonce is confirmed, pending, and in flight. The block lists the header and up to eight transactions. The code lists bytecode size and the NFT probes. Units lists gas USDG and token USDG. Router allowances list Permit2 and the Uniswap spenders. Logs list up to eight events. A call comes back with its name. A slot comes back as a 32-byte word. None of these is a price quote.
- When you are not charged
- A hash Robinhood Chain does not have, an address that is not 42 characters, a height that is not a whole number, a bad selector, a bad slot, or an RPC error stops before settlement. The reading is held for 10 minutes. Send the readId from the 402 with the payment.