ToolVet
80trust / 100

Sar Image Extract

by space.halowerk.com in Search & web

x402 APIPassing, checked 3 h ago

Treats cells at or above a caller threshold as foreground, labels four-neighbor connected components, and reports area, bounding box, peak, and mean value. It does not ingest imagery, calibrate backscatter, remove speckle, geolocate pixels, classify objects, or infer real-world meaning.

POST
https://space.halowerk.com/v1/sar-image-extract
Price
$0.004
per call in USDC
Uptime
100%
last 30 days
Response time
125 ms
249 ms slowest 5%
Last check
Passed
3 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

POST https://space.halowerk.com/v1/sar-image-extract

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://space.halowerk.com/v1/sar-image-extract
content-type: application/json

{
  "grid": [
    [
      0.1,
      0.2,
      3.2,
      3.5
    ],
    [
      0.2,
      0.3,
      3.8,
      0.4
    ],
    [
      2.7,
      2.9,
      0.2,
      0.1
    ],
    [
      2.8,
      0.2,
      0.1,
      4.1
    ]
  ],
  "minimum_component_pixels": 2,
  "pixel_area_m2": 100,
  "threshold": 2.5
}

Parameters

ParameterTypeRequiredDescription
gridarray of array of numberYes
minimum_component_pixelsintegerYes
pixel_area_m2numberYes
thresholdnumberYes

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://space.halowerk.com/v1/sar-image-extract' \
  -H 'content-type: application/json' \
  --data-raw '{"grid":[[0.1,0.2,3.2,3.5],[0.2,0.3,3.8,0.4],[2.7,2.9,0.2,0.1],[2.8,0.2,0.1,4.1]],"minimum_component_pixels":2,"pixel_area_m2":100,"threshold":2.5}'

# 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://space.halowerk.com/v1/sar-image-extract' \
  -H 'content-type: application/json' \
  --data-raw '{"grid":[[0.1,0.2,3.2,3.5],[0.2,0.3,3.8,0.4],[2.7,2.9,0.2,0.1],[2.8,0.2,0.1,4.1]],"minimum_component_pixels":2,"pixel_area_m2":100,"threshold":2.5}' \
  | 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%2Fspace.halowerk.com%2Fv1%2Fsar-image-extract&method=POST
const res = await pay("https://space.halowerk.com/v1/sar-image-extract", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "grid": [
      [
        0.1,
        0.2,
        3.2,
        3.5
      ],
      [
        0.2,
        0.3,
        3.8,
        0.4
      ],
      [
        2.7,
        2.9,
        0.2,
        0.1
      ],
      [
        2.8,
        0.2,
        0.1,
        4.1
      ]
    ],
    "minimum_component_pixels": 2,
    "pixel_area_m2": 100,
    "threshold": 2.5
  }),
});
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://space.halowerk.com/v1/sar-image-extract",
        json={
            "grid": [
                [
                    0.1,
                    0.2,
                    3.2,
                    3.5,
                ],
                [
                    0.2,
                    0.3,
                    3.8,
                    0.4,
                ],
                [
                    2.7,
                    2.9,
                    0.2,
                    0.1,
                ],
                [
                    2.8,
                    0.2,
                    0.1,
                    4.1,
                ],
            ],
            "minimum_component_pixels": 2,
            "pixel_area_m2": 100,
            "threshold": 2.5,
        },
    )
    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
3 h agoPassed402110 ms$0.004
8 h agoPassed402109 ms$0.004
12 h agoPassed402109 ms$0.004
17 h agoPassed402106 ms$0.004
21 h agoPassed402114 ms$0.004
Show 10 older checks
26 h agoPassed402111 ms$0.004
35 h agoPassed402101 ms$0.004
40 h agoPassed40290 ms$0.004
44 h agoPassed402249 ms$0.004
2 days agoPassed402184 ms$0.004
2 days agoPassed402123 ms$0.004
2 days agoPassed402138 ms$0.004
3 days agoPassed402105 ms$0.004
3 days agoPassed402182 ms$0.004
3 days agoPassed402127 ms$0.004