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Delx Commerce Gas Cost ETH Calculator
x402
Delx Commerce Gas Cost ETH Calculator is a paid API for AI agents from commerce.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-01).
Computes the ETH and wei cost of an Ethereum transaction given gas used and gas price in wei
Price / call$0.001
Success—
StatusUnknown
How this service works
Pay-per-result APIs for agents. No signup. Exact price. Verifiable delivery. USDC on Base + Solana via x402.
Output
Returns a JSON object with the schema identifier 'delx/util-gas-cost-eth/v1', the transaction cost expressed in ETH as a decimal (cost_eth), the cost in wei as a string (cost_wei), and echoes back the input gas_used and gas_price_wei for verification.
Example use cases
Transaction fee audit for DeFi app
“I processed a swap transaction that used 150000 gas at a gas price of 12000000000 wei — how much did that cost in ETH?”
Gas cost display in wallet UI
“Show the user how much ETH they spent on a transaction that used 45000 gas units at 8500000000 wei per gas.”
Historical gas cost reconstruction
“I'm analyzing an old Ethereum transaction with 63000 gas used and a gas price of 25000000000 wei — what was the total fee in ETH and wei?”
Technical details
Endpoint
POSThttps://commerce.delx.ai/api/v1/x402/gas-cost-eth?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a precise, on-demand computation of Ethereum transaction gas costs in ETH and wei without setting up local arithmetic — particularly useful inside agent workflows that need to display, log, or compare transaction fees without writing custom BigInt math. Ideal for pay-per-use agent pipelines where no API key or signup is required.
Side effects
- Missing required fields (gas_used or gas_price_wei) returns an error response
- Non-integer gas_used or non-string gas_price_wei may cause validation errors
- Extremely large values for gas_price_wei could cause overflow or precision issues
- Payment failure via x402 USDC protocol results in 402 response before computation occurs
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| gas_used | integer | Input field: gas used. |
| gas_price_wei | string | Input field: gas price wei. |
Output
Schema · Response
{
"type": "json",
"example": {
"schema": "delx/util-gas-cost-eth/v1",
"cost_eth": 0.000021,
"cost_wei": "21000000000000",
"gas_used": 21000,
"gas_price_wei": "1000000000"
}
}Tags
x402
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