ToolVet
80trust / 100

Port Pair

by fracht.halowerk.com in Other

x402 APIPassing, checked 19 min ago

Estimates great-circle port distance and sailing time from supplied port coordinates and speed. Missing facts are returned as null and named in unavailable_fields where applicable. Derived values disclose their method; source-backed values disclose source, time window and age.

POST
https://fracht.halowerk.com/v1/port-pair
Price
$0.004
per call in USDC
Uptime
100%
last 30 days
Response time
107 ms
176 ms slowest 5%
Last check
Passed
19 min ago, next in 11 min

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

POST https://fracht.halowerk.com/v1/port-pair

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://fracht.halowerk.com/v1/port-pair
content-type: application/json

{
  "destination": {
    "lat": 51.95,
    "lon": 4.14
  },
  "detour_factor": 1.12,
  "origin": {
    "lat": 53.5461,
    "lon": 9.9661
  },
  "speed_knots": 15
}

Parameters

ParameterTypeRequiredDescription
destinationobjectYes
detour_factornumberYes
originobjectYes
speed_knotsnumberYes

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://fracht.halowerk.com/v1/port-pair' \
  -H 'content-type: application/json' \
  --data-raw '{"destination":{"lat":51.95,"lon":4.14},"detour_factor":1.12,"origin":{"lat":53.5461,"lon":9.9661},"speed_knots":15}'

# 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://fracht.halowerk.com/v1/port-pair' \
  -H 'content-type: application/json' \
  --data-raw '{"destination":{"lat":51.95,"lon":4.14},"detour_factor":1.12,"origin":{"lat":53.5461,"lon":9.9661},"speed_knots":15}' \
  | 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%2Ffracht.halowerk.com%2Fv1%2Fport-pair&method=POST
const res = await pay("https://fracht.halowerk.com/v1/port-pair", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "destination": {
      "lat": 51.95,
      "lon": 4.14
    },
    "detour_factor": 1.12,
    "origin": {
      "lat": 53.5461,
      "lon": 9.9661
    },
    "speed_knots": 15
  }),
});
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://fracht.halowerk.com/v1/port-pair",
        json={
            "destination": {
                "lat": 51.95,
                "lon": 4.14,
            },
            "detour_factor": 1.12,
            "origin": {
                "lat": 53.5461,
                "lon": 9.9661,
            },
            "speed_knots": 15,
        },
    )
    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
19 min agoPassed402144 ms$0.004
4 h agoPassed40296 ms$0.004
7 h agoPassed402294 ms$0.004
10 h agoPassed40299 ms$0.004
13 h agoPassed402105 ms$0.004
Show 10 older checks
18 h agoPassed402107 ms$0.004
23 h agoPassed40299 ms$0.004
28 h agoPassed402100 ms$0.004
33 h agoPassed40290 ms$0.004
39 h agoPassed40299 ms$0.004
44 h agoPassed402100 ms$0.004
2 days agoPassed402106 ms$0.004
2 days agoPassed402106 ms$0.004
2 days agoPassed40297 ms$0.004
3 days agoPassed402185 ms$0.004