api.x402node.dev

https://api.x402node.dev/chain/tx-cost

Estimate the USD cost of a transaction (transfer, ERC20 transfer, approve, swap, NFT mint) on Base/Ethereum/Arbitrum/Optimism/Polygon from live gas price and native token price - lets agents decide whether an action is worth the fee before sending. gas cost, transaction cost, tx fee usd, how much gas, operation cost, fee estimate

last updated: Jul 9, 2026 · type: http · x402 v2

Payment Options

NetworkSchemeAmountPay To
Baseexact$0.005000 USDC0x4466...125e
solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdpexact0.01 tokens9urRvU...o1up

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Resource Activity

via Bazaar · last 30 days
Calls
3
Unique Payers
3
Last Called
Jul 9, 2026