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api.x402node.dev

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 Accepts payment on Base or Solana — either network works.

Resource URL

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

Payment options

exactBase (8453)

$0.005 USDC

Max amount

Pay to
0x4466d4A84b7c49a6A094ec6eef4a0712D6dd125e
Timeout
300s
exactSolana

$0.005 USDC

Max amount

Pay to
9urRvUx69HqAopg1JGV9P9wR7JdKoztzdkuNyJ8Eo1up
Timeout
300s

For agents

Prompt snippet for AI agents

Find and pay for this x402 resource:
URL: https://api.x402node.dev/chain/tx-cost
Type: http
Sources: cdp, payai, ultravioletadao, thirdweb

Developer