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chain.openverbs.com EVM Gas Conditions
x402
chain.openverbs.com EVM Gas Conditions is a paid API for AI agents from chain.openverbs.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-27).
Returns live gas price, EIP-1559 base fee, and suggested max priority fee for a specified EVM chain in both wei and gwei.
Price / call$0.002
Success—
StatusUnknown
Output
Returns live on-chain gas data for the requested EVM chain: current gas price, latest block base fee (EIP-1559), and suggested max priority fee — all expressed in both wei and gwei. Data is read directly from the chain with automatic RPC endpoint fallback for reliability.
Example use cases
Pre-transaction gas check
“Before I send this ETH transfer, can you check the current gas price and base fee on Ethereum so I know if it's a good time to submit?”
DeFi bot fee optimization
“What's the current base fee and max priority fee on Polygon right now? I want to make sure my DEX trade goes through without overpaying.”
Multi-chain gas comparison
“Can you pull the current gas prices on Base and Optimism so I can compare which chain is cheaper to use for my transaction?”
Technical details
Endpoint
POSThttps://chain.openverbs.com/v1/gas?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need authoritative, real-time EVM gas parameters that cannot be computed client-side — especially when preparing transactions with EIP-1559 fee fields, monitoring gas trends, or deciding whether to delay a transaction. Prefer this over static fee estimates or cached data when accuracy and freshness are critical.
Side effects
- Unsupported chain name returns a validation error
- RPC endpoint downtime may cause delays even with fallback logic
- Stale data if block production is slow on the target chain
- Missing or malformed 'chain' field defaults to ethereum silently
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| chain | string | EVM chain to query. One of: ethereum, base, arbitrum, optimism, polygon. Default "ethereum". |
Tags
x402
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