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api.x402node.dev chain gas-estimate
https://api.x402node.dev/chain/gas-estimate
payable
Estimates the USD gas cost of a common action (transfer, erc20-transfer, approve, swap, nft-mint) across EVM chains, combining live gas price per chain with the native token price. Lets an agent pick the cheapest chain to execute and budget a transaction. Live aggregated gas + price compute. gas cost estimate, transaction fee usd, cheapest chain to execute, swap gas Accepts payment on Base or Sola
We sent a real
GET request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.01
- Network
- base
- Pay to
- 0x4466d4A84b7c49a6A094ec6eef4a0712D6dd125e
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- GET
- Response latency
- 47 ms
- Payment options
- 2 usable of 2
- Last checked
- 2026-08-10T09:19:12.347Z (1d ago)
- Category
- finance-crypto
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fapi.x402node.dev%2Fchain%2Fgas-estimate"