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Gas Cost in Wei
x402
Gas Cost in Wei is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).
Computes total gas cost in wei by multiplying gas_used by gas_price_wei using pure local arithmetic, no RPC or node required.
Price / call$0.001
Success—
StatusUnknown
How this service works
Compute gas_used × gas_price as total gas cost in wei. Call when estimating tx cost from known used gas and price without a node. Returns gas cost wei string as deterministic JSON for $0.001 USDC via x402 on Base. First-party local math only—no RPC, live market feed, API keys, storage, or mediagen. Advisory only; the caller owns capital, risk, and production controls.
Output
Returns a deterministic JSON response containing the total gas cost as a wei string, computed as gas_used × gas_price_wei. No external calls are made; the result is pure local arithmetic.
Example use cases
Estimate transaction fee offline
“I sent a transaction that used 52000 gas and the gas price was 15000000000 wei — what was the total cost in wei?”
DeFi bot pre-trade cost check
“Before I submit this swap, calculate the total gas cost in wei if I expect to use 120000 gas at a gas price of 8000000000 wei.”
Post-execution accounting
“I need to log the exact gas expenditure in wei for a contract call that used 84000 gas at 12500000000 wei per gas — can you compute that?”
Technical details
Endpoint
POSThttps://api.delx.ai/api/v1/x402/gas-cost-weiWhen to prefer
Use this endpoint when you already know both gas_used and gas_price_wei and need a deterministic, offline wei cost computation without spinning up an RPC node or querying live chain data. Ideal for post-execution accounting, pre-submission cost checks in agents, and any context where a fast, keyless, no-network math result is sufficient.
Side effects
- Missing or invalid gas_used integer returns a validation error
- Missing or non-string gas_price_wei returns a validation error
- Overflow for extremely large gas values may produce errors
- Non-numeric string in gas_price_wei causes a parse/type error
- Payment not processed (x402 protocol failure) results in no response
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-wei/v1",
"cost_wei": "21000000000000",
"gas_used": 21000,
"gas_price_wei": "1000000000"
}
}Tags
x402
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