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Multi-Chain Gas Price Oracle
x402
Multi-Chain Gas Price Oracle is a paid API for AI agents from opportunity-api-production.up.railway.app, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).
Returns live gas prices in gwei across Ethereum, Base, Arbitrum, Optimism, and Polygon in a single API call using public RPCs.
Price / call$0.005
Success—
StatusUnknown
How this service works
Live gas prices in gwei across Ethereum, Base, Arbitrum, Optimism, Polygon in one call (public RPCs).
Output
Returns live gas prices in gwei for all five chains — Ethereum mainnet, Base, Arbitrum, Optimism, and Polygon — fetched simultaneously from public RPCs in a single response.
Example use cases
Example prompt
“What are the current gas prices in gwei across Ethereum, Base, Arbitrum, Optimism, and Polygon right now? I want to figure out which chain is cheapest before I submit my transaction.”
Technical details
Endpoint
GEThttps://opportunity-api-production.up.railway.app/api/gasWhen to prefer
Choose this endpoint when you need a quick, no-parameter snapshot of gas prices across all major EVM-compatible chains simultaneously. It is ideal for cross-chain transaction routing decisions, DeFi automation bots, or any agent that needs to compare network fees before executing on-chain actions.
Side effects
- Public RPC node downtime may cause stale or missing data for one or more chains
- Rate limiting on underlying public RPCs could result in partial or failed responses
- Network congestion may cause slight delays in gwei readings
- If all RPCs are unresponsive, the endpoint may return an error or empty data
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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