ToolVet
80trust / 100

Prefix Visibility

by netz.halowerk.com in Other

x402 APIPassing, checked 16 min ago

Reports the propagation of a prefix as the fraction of RIS observers that see it, separately for IPv4 and IPv6, because the absolute peer count moves with the size of the measurement network and is not comparable across time or between prefixes. The share is graded against stated thresholds, and — this is the part that makes the number mean something — compared against the other prefixes announced by the same origin AS.

POST
https://netz.halowerk.com/v1/prefix-visibility
Price
$0.004
per call in USDC
Uptime
100%
last 30 days
Response time
120 ms
155 ms slowest 5%
Last check
Passed
16 min ago, next in 12 min

Run a free test callHow to call it

Reliability

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Status and outage history · Atom feed · Watch with other listings

How to call it

POST https://netz.halowerk.com/v1/prefix-visibility

Each call costs $0.004 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.

POST https://netz.halowerk.com/v1/prefix-visibility
content-type: application/json

{
  "compare_with_asn": true,
  "max_compare": 15,
  "prefix": "8.8.8.0/24"
}

Parameters

ParameterTypeRequiredDescription
compare_with_asnbooleanNoCompare against the other prefixes of the announcing AS. Costs one extra upstream call. Default: true.
max_compareintegerNoHow many sibling prefixes to sample for the comparison. Default: 15.
prefixstringYes

Example response

The listing has no example response.

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.004.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://netz.halowerk.com/v1/prefix-visibility' \
  -H 'content-type: application/json' \
  --data-raw '{"compare_with_asn":true,"max_compare":15,"prefix":"8.8.8.0/24"}'

# 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 - -X POST 'https://netz.halowerk.com/v1/prefix-visibility' \
  -H 'content-type: application/json' \
  --data-raw '{"compare_with_asn":true,"max_compare":15,"prefix":"8.8.8.0/24"}' \
  | 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 $0.004 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.004" });
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 $0.004 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fnetz.halowerk.com%2Fv1%2Fprefix-visibility&method=POST
const res = await pay("https://netz.halowerk.com/v1/prefix-visibility", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "compare_with_asn": true,
    "max_compare": 15,
    "prefix": "8.8.8.0/24"
  }),
});
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 $0.004 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.004"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://netz.halowerk.com/v1/prefix-visibility",
        json={
            "compare_with_asn": True,
            "max_compare": 15,
            "prefix": "8.8.8.0/24",
        },
    )
    print(res.status_code, res.text)

Security scan

No findings

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Recent checks

WhenResultHTTPTimePrice
16 min agoPassed402103 ms$0.004
3 h agoPassed402111 ms$0.004
7 h agoPassed402126 ms$0.004
10 h agoPassed402100 ms$0.004
13 h agoPassed402100 ms$0.004
Show 10 older checks
18 h agoPassed402101 ms$0.004
23 h agoPassed402155 ms$0.004
28 h agoPassed402113 ms$0.004
33 h agoPassed40296 ms$0.004
39 h agoPassed402129 ms$0.004
44 h agoPassed402126 ms$0.004
2 days agoPassed402104 ms$0.004
2 days agoPassed40299 ms$0.004
2 days agoPassed402133 ms$0.004
3 days agoPassed402142 ms$0.004