ToolVet
78trust / 100

Us Geocode

by SiteCheck in Weather & location

x402 APIPassing, checked 38 min ago

Geocodes a one-line US address with the US Census Bureau: matched address, coordinates, county, state, census tract and block group. Addresses that do not match answer 404 (not charged). Public domain data.

GET
https://api.sitecheck-api.workers.dev/api/us-geocode
Price
$0.001
per call in USDC
Uptime
100%
last 30 days
Response time
47 ms
638 ms slowest 5%
Last check
Passed
38 min 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.sitecheck-api.workers.dev/api/us-geocode

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

From the listing.

GET https://api.sitecheck-api.workers.dev/api/us-geocode?address=1600+Pennsylvania+Ave+NW%2C+Washington%2C+DC+20500

Parameters

ParameterTypeRequiredDescription
addressstringYesOne line, US address

Example response

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

{
  "attribution": "US Census Bureau (public domain)",
  "blockGroup": null,
  "censusTract": "980000",
  "checkedAt": "2026-10-14T07:00:44.072Z",
  "county": "District of Columbia",
  "countyFips": "11001",
  "lat": 38.898702605245,
  "lon": -77.035189204737,
  "matchedAddress": "1600 PENNSYLVANIA AVE NW, WASHINGTON, DC, 20500",
  "query": "1600 Pennsylvania Ave NW, Washington, DC 20500",
  "source": "https://geocoding.geo.census.gov/geocoder/geographies/onelineaddress",
  "state": "District of Columbia",
  "stateFips": "11"
}

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://api.sitecheck-api.workers.dev/api/us-geocode?address=1600+Pennsylvania+Ave+NW%2C+Washington%2C+DC+20500'

# 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.sitecheck-api.workers.dev/api/us-geocode?address=1600+Pennsylvania+Ave+NW%2C+Washington%2C+DC+20500' \
  | 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%2Fapi.sitecheck-api.workers.dev%2Fapi%2Fus-geocode
const res = await pay("https://api.sitecheck-api.workers.dev/api/us-geocode?address=1600+Pennsylvania+Ave+NW%2C+Washington%2C+DC+20500");
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://api.sitecheck-api.workers.dev/api/us-geocode?address=1600+Pennsylvania+Ave+NW%2C+Washington%2C+DC+20500")
    print(res.status_code, res.text)

Security scan

No findings

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Recent checks

WhenResultHTTPTimePrice
38 min agoPassed402119 ms$0.001
5 h agoPassed402638 ms$0.001
9 h agoPassed40242 ms$0.001
14 h agoPassed40247 ms$0.001
18 h agoPassed40247 ms$0.001
Show 1 older checks
22 h agoPassed40292 ms$0.001