ToolVet
80trust / 100

Chain Gas

by Soren in Onchain & crypto

x402 APIPassing, checked 3 h ago

Read current gas price and base fee, live from Base mainnet, for a fraction of a cent. No API key, no account — a wallet is the only requirement, and you are charged only if the read succeeds. Plain unsigned data; the attested version of chain reads is /v1/oracle/onchain. Answers are read at the moment of the call and stamped with the block they came from where applicable.

GET
https://soren.com/v1/chain/gas
Price
$0.002
per call in USDC
Uptime
95.5%
last 30 days
Response time
299 ms
452 ms slowest 5%
Last check
Passed
3 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://soren.com/v1/chain/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

The listing has no example input.

GET https://soren.com/v1/chain/gas

Example response

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

{
  "as_of_block": "<int>",
  "base_fee_wei": "<int>",
  "gas_price_wei": "<int>"
}

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://soren.com/v1/chain/gas'

# 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://soren.com/v1/chain/gas' \
  | 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%2Fsoren.com%2Fv1%2Fchain%2Fgas
const res = await pay("https://soren.com/v1/chain/gas");
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://soren.com/v1/chain/gas")
    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
3 h agoPassed402201 ms$0.002
7 h agoPassed402482 ms$0.002
11 h agoPassed402249 ms$0.002
15 h agoPassed402452 ms$0.002
19 h agoPassed402329 ms$0.002
Show 10 older checks
23 h agoPassed402331 ms$0.002
27 h agoPassed402283 ms$0.002
30 h agoTimed out---
34 h agoPassed402388 ms$0.002
38 h agoPassed402127 ms$0.002
41 h agoPassed402376 ms$0.002
45 h agoPassed402130 ms$0.002
2 days agoPassed402422 ms$0.002
2 days agoPassed402265 ms$0.002
2 days agoPassed402409 ms$0.002