ToolVet
77trust / 100

Eth Gas

by eu-verify in Onchain & crypto

x402 APIPassing, checked 2 h ago

Live Ethereum mainnet gas pricing from PublicNode RPC: next-block base fee, 25/50/75th-percentile priority tips over the last 5 blocks (slow/std/fast), and a ready-to-sign recommendation (max_fee = 2*base + tip). Query: ?speed=slow|std|fast (default std). All values are decimal gwei, no hex parsing needed. 30s cache.

GET
https://data.greeneris.io/v1/eth/gas
Price
$0.002
per call in USDC
Uptime
100%
last 30 days
Response time
334 ms
443 ms slowest 5%
Last check
Passed
2 h ago, next any minute now

Run a free test callHow to call it

Reliability

All checks passedSome failedAll failedNot checked

Status and outage history · Atom feed

How to call it

GET https://data.greeneris.io/v1/eth/gas

Each call costs $0.002 in USDC on Base, paid with the request over x402.

Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.

Example request

From the listing.

GET https://data.greeneris.io/v1/eth/gas?speed=fast

Parameters

ParameterTypeRequiredDescription
speedstringNoWhich priority-fee percentile to recommend (25/50/75) One of: slow, std, fast. Default: "std".

Example response

The provider's example. We can't check it without paying.

{
  "base_fee_gwei": 0.0648,
  "blocks_sampled": 5,
  "legacy_gas_price_gwei": 0.0609,
  "priority_fee_gwei": {
    "fast": 0.1337,
    "slow": 0.005,
    "std": 0.0054
  },
  "recommended": {
    "max_fee_gwei": 0.135,
    "max_priority_fee_gwei": 0.0054,
    "speed": "std"
  },
  "source": "Ethereum mainnet via PublicNode RPC (eth_gasPrice + eth_feeHistory, last 5 blocks)"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.002.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://data.greeneris.io/v1/eth/gas?speed=fast'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - 'https://data.greeneris.io/v1/eth/gas?speed=fast' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode
JavaScript: pay and call
// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

// Pays at most $0.002 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.002" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.002 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fdata.greeneris.io%2Fv1%2Feth%2Fgas
const res = await pay("https://data.greeneris.io/v1/eth/gas?speed=fast");
console.log(res.status, await res.text());
Python: pay and call
# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.002 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.002"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://data.greeneris.io/v1/eth/gas?speed=fast")
    print(res.status_code, res.text)

Security scan

No findings

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Recent checks

WhenResultHTTPTimePrice
2 h agoPassed402643 ms$0.002
6 h agoPassed402309 ms$0.002
10 h agoPassed402351 ms$0.002
14 h agoPassed402327 ms$0.002
18 h agoPassed402363 ms$0.002
Show 10 older checks
22 h agoPassed402336 ms$0.002
26 h agoPassed402517 ms$0.002
30 h agoPassed402406 ms$0.002
34 h agoPassed402334 ms$0.002
37 h agoPassed402332 ms$0.002
41 h agoPassed402181 ms$0.002
45 h agoPassed402181 ms$0.002
2 days agoPassed402326 ms$0.002
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2 days agoPassed402176 ms$0.002