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Delx Commerce — Base Gas Budget Check
x402
Delx Commerce — Base Gas Budget Check 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).
Checks whether an estimated Ethereum Base network gas fee falls within a specified ETH budget, returning fee breakdown and headroom in ETH, wei, and USD.
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 'delx/util-base-gas-budget-check/v1' containing: the input budget in both ETH and wei, the estimated transaction fee in ETH, wei, and USD, the remaining headroom in ETH and wei after the fee, and a boolean 'within_budget' indicating whether the fee fits inside the budget.
Example use cases
Pre-flight gas check for agent transaction
“I'm about to have my agent send a USDC transfer on Base. My gas budget is 0.00005 ETH, gas limit is 65000, gas price is 0.1 gwei, and ETH is $3400. Is my budget enough, and how much headroom is left?”
Smart contract call cost estimation
“Can you figure out the USD cost of calling a smart contract on Base with a gas limit of 500000, gas price of 0.05 gwei, and ETH at $3600? I want to know if it fits under my 0.0001 ETH budget.”
Agentic spending guardrail before batch operations
“Before my agent kicks off a batch of 10 Base transactions, check if a 0.001 ETH gas budget is sufficient per transaction given a gas limit of 21000, 0.08 gwei gas price, and current ETH price of $3500.”
Technical details
Endpoint
POSThttps://commerce.delx.ai/api/v1/x402/base-gas-budget-check?utm_source=zero.xyzWhen to prefer
Use this endpoint when an AI agent or automated workflow needs to programmatically verify that a gas budget is sufficient before submitting a transaction on the Ethereum Base network. It is ideal for pre-flight checks in agentic pipelines, spending guardrails, and cost estimation without executing the transaction. Prefer it over manual calculation when you need both ETH/wei and USD breakdowns in a single structured response, and when paying per-call with no API key via x402/USDC is acceptable.
Side effects
- Missing required fields may result in invalid computation or error response
- Passing zero or negative ETH/USD price will be rejected by schema (exclusiveMinimum: 0)
- Gas limit exceeding 30,000,000 will fail schema validation
- Network or payment (x402) failure may prevent the call from completing
- Stale ETH/USD price input leads to inaccurate USD fee estimates
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| eth_usd | number | |
| gas_limit | integer | |
| budget_eth | number | |
| gas_price_gwei | number |
Output
Schema · Response
{
"type": "json",
"example": {
"schema": "delx/util-base-gas-budget-check/v1",
"budget_eth": "0.00001",
"budget_wei": "10000000000000",
"headroom_eth": "0.00000832",
"headroom_wei": "8320000000000",
"within_budget": true,
"estimated_fee_eth": "0.00000168",
"estimated_fee_usd": "0.00588",
"estimated_fee_wei": "1680000000000"
}
}Tags
x402
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