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ScrapeMole Onchain Gas & Fee Estimates
x402
ScrapeMole Onchain Gas & Fee Estimates is a paid API for AI agents from onchain.scrapemole.workers.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-12).
Returns real-time Base and Ethereum gas prices, fee estimates, and USD cost breakdowns for common transaction types
Price / call$0.001
Success—
StatusUnknown
How this service works
Pay-per-call on-chain data for agents on Base and Ethereum, read directly from chain state: Chainlink USD prices (crypto, stablecoins, FX, metals; 10 per call), ERC-20 token info, wallet balances with USD values, transaction lookup with decoded ERC-20 transfers, ENS and Basename resolution (forward and reverse), gas and fee estimates in USD, and Uniswap v3 DEX prices for long-tail tokens (verify a payment arrived). USDC via x402; failed calls are never charged. Payments: x402 v2, scheme "exact", USDC on Base (eip155:8453). The payment is verified before the work and settled only when the response is 200. Terms: https://onchain.scrapemole.workers.dev/terms
Output
Returns a JSON object with the current block number, chain name, ETH/USD price, base fee in Gwei, gas price in Gwei, L1 data fee in ETH, block fullness percentage, priority fee tiers (fast/standard/slow in Gwei), and a list of common transaction type cost estimates showing gas units used, ETH cost, and USD cost.
Example use cases
Pre-send transaction cost check
“Before I send 0.5 ETH to my friend, can you check what the current gas fees are on Base and tell me how much it will cost in USD at standard and fast speeds?”
DeFi bot gas optimization
“Pull the current Base gas prices including base fee, priority fees for fast and slow, and block fullness — I want to decide if now is a good time to execute my swap or wait for cheaper fees.”
Gas spike monitoring alert
“Check the current gas price on Base and tell me the Gwei values and USD cost for a standard ETH transfer — I need to know if fees are unusually high right now.”
Technical details
Endpoint
GEThttps://onchain.scrapemole.workers.dev/v1/gas?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need real-time gas fee data specifically for Base or Ethereum, especially when you want USD-denominated cost estimates for common transaction types alongside raw Gwei values. Ideal for agents that need to decide whether to proceed with a transaction, estimate costs before signing, or monitor network congestion. The pay-per-call x402 model (failed calls not charged) makes it low-risk for frequent polling. Prefer over free RPC endpoints when you need structured, pre-calculated USD costs and tiered priority fees in a single call.
Side effects
- Payment failure via x402 if USDC balance is insufficient — call is not charged
- Network or RPC timeout if Base/Ethereum node is unavailable
- Stale data if the chain is experiencing block production delays
- Invalid or missing required parameters return a 400-level error without charge
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| required | string | |
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"block": 52479060,
"chain": "base",
"ethUsd": 2533.08,
"estimates": [
{
"gas": 21000,
"action": "ETH transfer",
"standard": {
"eth": "0.000001358",
"usd": 0.0034
}
}
],
"baseFeeGwei": 0.005,
"gasPriceGwei": 0.006,
"l1DataFeeEth": "0.000001232",
"blockFullness": 0.1,
"priorityFeeGwei": {
"fast": 0.0022,
"slow": 0.0001,
"standard": 0.001
}
}
}Tags
x402
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