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Multi-Chain Gas Oracle – ETH Price Feed
x402
Multi-Chain Gas Oracle – ETH Price Feed is a paid API for AI agents from gas-optical-production-30aa.up.railway.app, paid per call via x402, $0.0001/call, status unknown (last checked 2026-10-17).
Returns the current ETH/USD price and a timestamp, sourced from a live multi-chain gas and market data oracle.
Price / call$0.0001
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
A JSON object containing 'usd' (current ETH price as a float, e.g. 3450.12) and 'timestamp' (Unix epoch integer indicating when the price was fetched).
Example use cases
DeFi swap cost estimator
“Before I approve this swap, what's ETH worth in USD right now so I can figure out how much I'm actually spending in dollar terms?”
Trading bot price trigger
“Check the live ETH price every minute and alert me when it crosses $3,500 — I need the exact USD value and the timestamp of each reading.”
Portfolio valuation snapshot
“I'm calculating the current USD value of my ETH holdings — can you grab the latest ETH/USD price with its timestamp so I can multiply it against my balance?”
Technical details
Endpoint
GEThttps://gas-optical-production-30aa.up.railway.app/eth-price?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a live, pay-per-call ETH/USD price with a verifiable timestamp and no API key setup, especially in agentic workflows that already handle x402 micropayments on Base. It is part of a broader multi-chain gas oracle suite, making it ideal when you also need gas prices or whale data in the same session.
Side effects
- Payment not included or insufficient: 402 Payment Required response; agent must attach x402 USDC payment on Base mainnet
- Upstream price feed outage: may return stale or error response
- Rate limiting: repeated rapid calls may be throttled
- Malformed response if railway deployment is restarting
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"usd": 3450.12,
"timestamp": 1710000000
}
}Tags
x402
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