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EVM Chain Gas Price API
x402
EVM Chain Gas Price API is a paid API for AI agents from x402-seller-0ay3.onrender.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).
Returns the current gas price (in wei and gwei) for a specified EVM blockchain (Base or Ethereum), read live from a public RPC endpoint using viem
Price / call$0.005
Success—
StatusUnknown
How this service works
Current gas price on an EVM blockchain, read live via a public RPC endpoint (viem) — no API key, no aggregator. Also available as dedicated routes: GET /api/gas/base, GET /api/gas/ethereum. Parameter: ?chain=<base|ethereum>.
Output
A JSON object containing the chain name, the live gas price expressed in both wei (as a string) and gwei (as a float), and a timestamp of when the data was fetched — e.g. {chain: 'base', gas_price_wei: '6000000', gas_price_gwei: 0.006, fetched_at: '2026-09-01T12:00:00.000Z'}.
Example use cases
Check gas before sending transaction
“What's the live gas price on Ethereum right now? I want to know if it's worth sending a transaction or if I should wait.”
Monitor Base network gas fees
“Can you check the current gas price on Base for me? I need the reading in gwei to estimate my transaction costs.”
Compare gas across chains
“What are the gas prices on both Base and Ethereum right now? Fetch the live gwei readings from each chain so I can decide which one is cheaper to use.”
Technical details
Endpoint
GEThttps://x402-seller-0ay3.onrender.com/api/chain/gasWhen to prefer
Choose this endpoint when you need a quick, no-API-key live gas price for Base or Ethereum directly from a public RPC node via viem. It is ideal for lightweight agents that need a real-time gwei reading without setting up an Infura/Alchemy key or calling a gas aggregator. Prefer alternatives like Etherscan Gas Tracker or Blocknative if you need historical gas data, priority fee breakdowns, or EIP-1559 base/priority fee separation.
Side effects
- Unsupported chain value (not 'base' or 'ethereum') returns a 400 or validation error
- Public RPC endpoint unavailable or rate-limited causing a timeout or 503
- Stale or delayed data if the RPC node is lagging behind the chain tip
- Network connectivity issues from the Render-hosted service
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"chain": "base",
"fetched_at": "2026-09-01T12:00:00.000Z",
"gas_price_wei": "6000000",
"gas_price_gwei": 0.006
}
}Tags
x402
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