ToolVet
78trust / 100

Gas

by base-intel-api.jakemaxsigal.workers.dev in Onchain & crypto

x402 APIPassing, checked 3 h ago

Base gas oracle / Base gas price API / Base L2 gas fee tracker / real-time gas estimator / swap cost estimator. Returns the current Base fee, fast/standard/slow priority tiers, the USD cost of a typical swap, and a congestion recommendation. For AI agents, trading bots, and wallets timing transactions on Base to minimize gas.

GET
https://base-intel-api.jakemaxsigal.workers.dev/gas
Price
$0.002
per call in USDC
Uptime
100%
last 30 days
Response time
168 ms
222 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 · Watch with other listings

How to call it

GET https://base-intel-api.jakemaxsigal.workers.dev/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

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

GET https://base-intel-api.jakemaxsigal.workers.dev/gas

Example response

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

{
  "baseFeeGwei": 0.004,
  "chain": "base",
  "recommendation": "very_cheap",
  "tiers": {
    "fast": {
      "maxFeeGwei": 0.008,
      "swapCostUsd": 0.0004,
      "waitBlocks": 1
    },
    "slow": {
      "maxFeeGwei": 0.005,
      "swapCostUsd": 0.0002,
      "waitBlocks": 10
    },
    "standard": {
      "maxFeeGwei": 0.006,
      "swapCostUsd": 0.0003,
      "waitBlocks": 2
    }
  },
  "timestamp": "2026-05-30T00:00:00.000Z"
}

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://base-intel-api.jakemaxsigal.workers.dev/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://base-intel-api.jakemaxsigal.workers.dev/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%2Fbase-intel-api.jakemaxsigal.workers.dev%2Fgas
const res = await pay("https://base-intel-api.jakemaxsigal.workers.dev/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://base-intel-api.jakemaxsigal.workers.dev/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 agoPassed402222 ms$0.002
8 h agoPassed402213 ms$0.002
12 h agoPassed402138 ms$0.002
17 h agoPassed402180 ms$0.002
22 h agoPassed402162 ms$0.002
Show 8 older checks
26 h agoPassed402143 ms$0.002
30 h agoPassed402182 ms$0.002
34 h agoPassed402210 ms$0.002
38 h agoPassed402202 ms$0.002
43 h agoPassed402162 ms$0.002
47 h agoPassed402139 ms$0.002
2 days agoPassed402160 ms$0.002
2 days agoPassed402168 ms$0.002