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Multi-Chain Gas Oracle & Gas Prediction
x402
Multi-Chain Gas Oracle & Gas Prediction is a paid API for AI agents from gas-optical-production-30aa.up.railway.app, paid per call via x402, $0.0005/call, status unknown (last checked 2026-10-16).
Returns live gas prices across Base, Ethereum, Arbitrum, and Optimism, plus ETH price, current block number, 1-hour gas prediction, and large Base whale transfers
Price / call$0.0005
Success—
StatusUnknown
How this service works
Live gas prices across Base, Ethereum, Arbitrum, and Optimism, plus ETH price, block number, gas prediction, and large Base whale transfers. Paid via x402 on Base mainnet.
Output
Returns a JSON object with the current gas price in gwei, a 1-hour predicted gas price in gwei, a trend direction (e.g. 'up' or 'down'), a confidence score (0–1) for the prediction, current ETH price, current block number, a timestamp, and details of large whale transfers on Base mainnet.
Example use cases
Optimal transaction timing for DeFi
“Check current gas prices across Ethereum, Base, Arbitrum, and Optimism and tell me whether gas is trending up or down — I want to know the best time to submit my DeFi transaction in the next hour.”
Whale activity alert on Base
“Are there any large whale transfers happening on Base right now? I want to know if any big wallets are moving funds before I make my trade.”
Multi-chain gas dashboard for portfolio manager
“Give me a full snapshot of gas prices on all major L2s and Ethereum mainnet right now, including ETH price and what gas is predicted to be in one hour — I need to decide which chain to use for my next transaction.”
Technical details
Endpoint
GEThttps://gas-optical-production-30aa.up.railway.app/gas-predict?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need real-time gas prices across multiple EVM chains simultaneously (Base, Ethereum, Arbitrum, Optimism) in a single call, especially when you also want forward-looking gas predictions with a confidence score. It is the right choice when tracking whale activity on Base alongside gas data matters. Prefer it over single-chain oracles when cross-chain comparison or the 1-hour forecast is required.
Side effects
- Payment not received or x402 authorization invalid — endpoint returns 402 Payment Required
- Upstream RPC node unavailable for one or more chains — partial or stale data returned
- Gas prediction model returns low confidence score (below 0.5) if market is volatile
- Rate limit exceeded if too many calls are made in quick succession
- Network timeout if railway.app hosting is under load
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"trend": "up",
"timestamp": 1710000000,
"confidence": 0.62,
"current_gwei": 12.4,
"predicted_gwei_1h": 14.1
}
}Tags
x402
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