ToolVet
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Water Streamflow

by Data Lookup API in Other

x402 APIPassing, checked 2 h ago

Real-time river and stream conditions at a USGS stream gauge — current streamflow/discharge (cubic feet per second) and gauge height/water level/stage (feet), i.e. how much water is flowing and how high it is right now. Data is provisional and subject to revision. Requires a USGS site number (e.g. 09380000 = Colorado River at Lees Ferry, AZ).

GET
https://x402-seller.onrender.com/water/streamflow
Price
$0.001
per call in USDC
Uptime
100%
last 30 days
Response time
190 ms
436 ms slowest 5%
Last check
Passed
2 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://x402-seller.onrender.com/water/streamflow

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://x402-seller.onrender.com/water/streamflow?site=09380000

Parameters

ParameterTypeRequiredDescription
sitestringYesUSGS site number (e.g. 09380000)

Example response

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

{
  "attribution": "Provisional data subject to revision. See https://waterdata.usgs.gov/nwis/help/?provisional",
  "gaugeHeightFt": 9.51,
  "lat": 36.8643,
  "lng": -111.5879,
  "provisional": true,
  "site": "09380000",
  "siteName": "COLORADO RIVER AT LEES FERRY, AZ",
  "source": "U.S. Geological Survey (USGS) National Water Information System",
  "streamflowCfs": 8770,
  "time": "2026-07-20T21:15:00.000-07:00"
}

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://x402-seller.onrender.com/water/streamflow?site=09380000'

# 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://x402-seller.onrender.com/water/streamflow?site=09380000' \
  | 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%2Fx402-seller.onrender.com%2Fwater%2Fstreamflow
const res = await pay("https://x402-seller.onrender.com/water/streamflow?site=09380000");
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://x402-seller.onrender.com/water/streamflow?site=09380000")
    print(res.status_code, res.text)

Security scan

No findings

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Recent checks

WhenResultHTTPTimePrice
2 h agoPassed402383 ms$0.001
5 h agoPassed402147 ms$0.001
9 h agoPassed402179 ms$0.001
14 h agoPassed402195 ms$0.001
20 h agoPassed402171 ms$0.001
Show 10 older checks
25 h agoPassed402160 ms$0.001
30 h agoPassed402188 ms$0.001
35 h agoPassed402196 ms$0.001
41 h agoPassed402180 ms$0.001
46 h agoPassed402291 ms$0.001
2 days agoPassed402171 ms$0.001
2 days agoPassed402166 ms$0.001
3 days agoPassed402367 ms$0.001
3 days agoPassed402221 ms$0.001
3 days agoPassed402177 ms$0.001