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dt0ur.online Multi-Chain Gas Price Comparator
x402
dt0ur.online Multi-Chain Gas Price Comparator is a paid API for AI agents from dt0ur.online, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-01).
Returns live base fees, gas prices (in gwei), and USD costs for native and ERC-20 transfers across up to 6 EVM chains, sorted cheapest-first so an agent can pick the optimal chain to transact on.
Price / call$0.01
Success—
StatusUnknown
How this service works
Live gas prices across base, ethereum, arbitrum, optimism, polygon, bsc, sorted cheapest first: base fee and gas price in gwei, plus the USD cost of a native transfer and of an ERC-20 transfer on each chain, so an agent can pick where to transact.
Output
A list of chains sorted cheapest-first, each with: base fee (gwei), gas price (gwei), estimated USD cost of a native token transfer, and estimated USD cost of an ERC-20 token transfer — giving an agent everything needed to route a transaction to the lowest-cost network.
Example use cases
Cheapest chain for token bridging
“I need to bridge USDC somewhere — check current gas costs on Base, Arbitrum, and Optimism and tell me which one is cheapest for an ERC-20 transfer right now.”
Pre-trade cost check for DeFi bot
“Before I execute this swap, pull live gas prices on Ethereum and Polygon and tell me the USD cost of an ERC-20 transfer on each so I can decide where to route it.”
Gas cost monitoring dashboard
“Fetch real-time gas prices across all supported chains — Base, Ethereum, Arbitrum, Optimism, Polygon, and BSC — and show me the gwei and USD costs ranked cheapest first so I can update my dashboard.”
Technical details
Endpoint
POSThttps://dt0ur.online/api/onchain/gas?utm_source=zero.xyzWhen to prefer
Use this endpoint when an agent needs to programmatically compare real-time gas costs across multiple EVM chains to make routing or timing decisions. It is ideal for DeFi agents, bridging bots, or wallet apps that need a single call to get a ranked, USD-denominated gas cost comparison rather than querying each chain's RPC individually. Prefer this over chain-specific gas oracles when multi-chain comparison is required in one shot.
Side effects
- Unknown chain enum value passed in the chains array returns a validation error
- RPC or upstream node unavailability may cause stale or missing data for a specific chain
- Network congestion spikes may make the snapshot slightly outdated by execution time
- Empty chains array or malformed JSON body returns an input validation error
- Payment failure (x402 protocol) blocks the request before any data is returned
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| chains | array | Chains to compare (default: all) |
Tags
x402
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