ToolVet
83trust / 100

Crypto Gas

by Sift Web Tools in Onchain & crypto

x402 APIPassing, checked 2 h ago

Gas and priority fees on 5 chains (slow, standard, fast), live. Current gas price, next base fee and priority-fee percentiles (slow, standard, fast) for ethereum, base, arbitrum, optimism and polygon, from the last 5 blocks. Pass chain=all (default) or one chain.

GET
https://sift.srv1996466.hstgr.cloud/v1/crypto/gas
Price
$0.001
per call in USDC
Uptime
100%
last 30 days
Response time
165 ms
328 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 · Watch with other listings

How to call it

GET https://sift.srv1996466.hstgr.cloud/v1/crypto/gas

Each call costs $0.001 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

Built from the input schema. Replace the values with your own.

GET https://sift.srv1996466.hstgr.cloud/v1/crypto/gas?chain=example

Parameters

ParameterTypeRequiredDescription
chainstringNoall, ethereum, base, arbitrum, optimism or polygon (default all)

Example response

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

{
  "chains": {
    "base": {
      "gas_price_gwei": 0.006,
      "priority_fee_gwei": {
        "fast": 0.01,
        "slow": 0,
        "standard": 0.001
      }
    }
  }
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.001.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://sift.srv1996466.hstgr.cloud/v1/crypto/gas?chain=example'

# 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://sift.srv1996466.hstgr.cloud/v1/crypto/gas?chain=example' \
  | 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 $0.001 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.001" });
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 $0.001 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fsift.srv1996466.hstgr.cloud%2Fv1%2Fcrypto%2Fgas
const res = await pay("https://sift.srv1996466.hstgr.cloud/v1/crypto/gas?chain=example");
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 $0.001 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.001"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://sift.srv1996466.hstgr.cloud/v1/crypto/gas?chain=example")
    print(res.status_code, res.text)

Security scan

No findings

We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

Recent checks

WhenResultHTTPTimePrice
2 h agoPassed402145 ms$0.001
6 h agoPassed402214 ms$0.001
11 h agoPassed402152 ms$0.001
15 h agoPassed402319 ms$0.001
20 h agoPassed402154 ms$0.001
Show 10 older checks
24 h agoPassed402148 ms$0.001
28 h agoPassed402178 ms$0.001
32 h agoPassed402328 ms$0.001
36 h agoPassed402152 ms$0.001
40 h agoPassed402165 ms$0.001
44 h agoPassed402145 ms$0.001
2 days agoPassed402206 ms$0.001
2 days agoPassed402154 ms$0.001
2 days agoPassed402309 ms$0.001
3 days agoPassed402188 ms$0.001