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Estimate the USD cost of a transaction (transfer, ERC20 transfer, approve, swap,...

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

Overview

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

Protocol x402
Price $0.0050
Payment Asset USD Coin
Payment Network Base
Category crypto/nft
Provider x402node
Source bazaar
Indexed 2026-06-13 19:15:46

Health

Status unknown
Latency (p50)
Uptime (30d)
Reliability Score
Last Checked Never
Last Healthy Never
Consecutive Failures 0

x402 Payment Validation

Payment Requirements
Asset Verified
Facilitator

Input Schema

{ "discoverable": true, "method": "GET", "queryParams": { "chain": "base (default), ethereum, arbitrum, optimism, polygon", "gasLimit": "Optional custom gas limit", "operation": "transfer, erc20transfer, approve, swap (default), nftmint, nfttransfer" }, "type": "http" }