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Gas Estimate
by Gas price in Onchain & crypto
x402 APIPassing, checked 54 min ago
Current gas price on Base, Polygon, Arbitrum, Optimism, Ethereum, Monad, Celo, Avalanche, Sei, or Robinhood Chain - for an agent budgeting a transaction: returns network, gasPriceGwei and gasPriceWei (decimal strings) from the chain's own eth_gasPrice, the node's suggested all-in price per gas unit. Multiply by the gas a transaction uses (21000 for a plain transfer) for its fee. Read-only.
GET https://agent402.tools/api/gas-estimate
Last 30 days
All checks passedSome failedAll failedNot checked
- Uptime
- 100%
- Response time
- 188 ms typical, 188 ms slowest 5%
- Last check
- 54 min ago
- Next check
- any minute now
How to call it
# See the payment challenge (nothing is charged)
curl -i -X GET "https://agent402.tools/api/gas-estimate?network=base"import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { ExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";
const client = new x402Client().register(
"eip155:8453",
new ExactEvmScheme(privateKeyToAccount(process.env.AGENT_KEY)),
);
const pay = wrapFetchWithPayment(fetch, client);
// Not sure it's safe to pay? Preflight it first for $0.005:
// GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fagent402.tools%2Fapi%2Fgas-estimate
const res = await pay("https://agent402.tools/api/gas-estimate?network=base");
console.log(await res.json());Example input
{
"network": "base"
}Example output
{
"gasPriceGwei": "0.0051",
"gasPriceWei": "5100000",
"network": "base"
}Security scan
- No findings. We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.
Recent checks
| When | Result | HTTP | Time | Price |
|---|---|---|---|---|
| 54 min ago | Passed | 402 | 188 ms | $0.001 |
| 6 h ago | Passed | 402 | 202 ms | $0.001 |