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Gas Oracle: Cheapest-Chain Ranking by USD Transaction Cost
x402
Gas Oracle: Cheapest-Chain Ranking by USD Transaction Cost is a paid API for AI agents from x402.professorsausages.com, paid per call via x402, $0.03/call, status unknown (last checked 2026-09-14).
Returns all supported blockchain networks ranked by all-in USD transaction cost, identifying the cheapest chain and potential savings versus Ethereum.
Price / call$0.03
Success—
StatusUnknown
How this service works
Cheapest-chain ranking: all supported chains by all-in USD tx cost
Output
Returns a ranked array of all supported chains sorted by all-in USD transaction cost, the name of the cheapest chain, the gas used, transaction speed, transaction type, savings in USD versus Ethereum, a timestamp of when data was fetched, and a list of any degraded (unavailable or stale) chains.
Example use cases
Example prompt
“Which blockchain is the cheapest right now for submitting a transaction? Give me a full ranking of all supported chains by all-in USD cost and tell me how much I'd save compared to Ethereum mainnet.”
Technical details
Endpoint
GEThttps://x402.professorsausages.com/gas-oracle/compareWhen to prefer
Use this endpoint when you need to compare transaction costs across multiple chains simultaneously to select the most cost-efficient network. Prefer this over the single-chain gas endpoint when the goal is cross-chain optimization or routing decisions rather than fetching bid-ready fee parameters for a specific chain.
Side effects
- Gas oracle data unavailable for one or more chains — those chains appear in the 'degraded' array with reason details
- All chains degraded — ranking may be empty or incomplete
- Payment not received — 402 response requiring x402 USDC micropayment
- Stale data if underlying gas feeds are lagging — check fetchedAt timestamp
- Network timeout from upstream RPC providers
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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