ToolVet
78trust / 100

Chain Gas

by ManyLives Onchain in Onchain & crypto

x402 APIPassing, checked 4 h ago

Use before sending a transaction on the Base network: current Base network gas: base fee, suggested priority fee and max fee, and the cost in ETH of a plain transfer and of a typical token transfer.

GET
https://api.manylives.me/paid/chain/gas
Price
$0.002
per call in USDC
Uptime
100%
last 30 days
Response time
494 ms
661 ms slowest 5%
Last check
Passed
4 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://api.manylives.me/paid/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

From the listing.

GET https://api.manylives.me/paid/chain/gas?units=gwei

Parameters

ParameterTypeRequiredDescription
unitsstringNooptional: gwei (default) or wei; fee field names end in the unit used

Example response

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

{
  "base_fee_gwei": "0.005",
  "block": 123,
  "max_fee_gwei": "0.011",
  "priority_fee_gwei": "0.001",
  "token_transfer_cost_eth": "0.00000071",
  "transfer_cost_eth": "0.000000231"
}

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://api.manylives.me/paid/chain/gas?units=gwei'

# 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://api.manylives.me/paid/chain/gas?units=gwei' \
  | 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%2Fapi.manylives.me%2Fpaid%2Fchain%2Fgas
const res = await pay("https://api.manylives.me/paid/chain/gas?units=gwei");
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://api.manylives.me/paid/chain/gas?units=gwei")
    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
4 h agoPassed402505 ms$0.002
8 h agoPassed402467 ms$0.002
12 h agoPassed402485 ms$0.002
16 h agoPassed402494 ms$0.002
21 h agoPassed402536 ms$0.002
Show 10 older checks
25 h agoPassed402407 ms$0.002
29 h agoPassed402510 ms$0.002
33 h agoPassed402472 ms$0.002
37 h agoPassed402647 ms$0.002
41 h agoPassed402393 ms$0.002
45 h agoPassed402474 ms$0.002
2 days agoPassed402496 ms$0.002
2 days agoPassed402661 ms$0.002
2 days agoPassed402673 ms$0.002
2 days agoPassed402498 ms$0.002