ToolVet
73trust / 100

Airquality History

by Citiview Agent Market in Markets & finance

x402 APIPassing, checked 4 h ago

Air pollution history for any place: daily average, min and max of PM2.5 (or PM10, ozone, NO2, SO2, CO) from the nearest active monitor for up to 365 days, with daily US AQI, worst day, days over the WHO guideline and an improving/worsening trend.

GET
https://agents.citiviewgroup.com/v1/airquality/history
Price
$0.003
per call in USDC
Uptime
100%
last 30 days
Response time
1.1 s
3.3 s 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 · Watch with other listings

How to call it

GET https://agents.citiviewgroup.com/v1/airquality/history

Each call costs $0.003 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://agents.citiviewgroup.com/v1/airquality/history?days=14&near=Delhi

Parameters

ParameterTypeRequiredDescription
daysintegerNo1-365, default 30
latnumberNo
lonnumberNo
nearstringNoPlace name
parameterstringNopm25 (default), pm10, o3, no2, so2, co

Example response

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

{
  "average": 88.2,
  "daily": [
    {
      "avg": 75.1,
      "date": "2026-10-01",
      "us_aqi": 161
    }
  ],
  "parameter": "pm25",
  "station": "...",
  "trend": "worsening"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.003.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://agents.citiviewgroup.com/v1/airquality/history?days=14&near=Delhi'

# 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://agents.citiviewgroup.com/v1/airquality/history?days=14&near=Delhi' \
  | 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 $0.003 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.003" });
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 $0.003 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fagents.citiviewgroup.com%2Fv1%2Fairquality%2Fhistory
const res = await pay("https://agents.citiviewgroup.com/v1/airquality/history?days=14&near=Delhi");
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 $0.003 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.003"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://agents.citiviewgroup.com/v1/airquality/history?days=14&near=Delhi")
    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 agoPassed40255 ms$0.003
8 h agoPassed4021.1 s$0.003
12 h agoPassed4021.4 s$0.003
17 h agoPassed4021.1 s$0.003
21 h agoPassed4021.8 s$0.003
Show 7 older checks
25 h agoPassed40250 ms$0.003
30 h agoPassed402980 ms$0.003
34 h agoPassed4021.9 s$0.003
38 h agoPassed4023.3 s$0.003
42 h agoPassed40269 ms$0.003
46 h agoPassed4021.3 s$0.003
2 days agoPassed40265 ms$0.003