ToolVet
71trust / 100

Calc Who Pv

by magent in Other

x402 APIPassing, checked 3 h ago

WHO 2016 polycythemia vera criteria (Arber 2016). Met when all three majors hold, or when major 1 and major 2 hold with subnormal EPO. Major 1 is male Hb >16.5 g/dL or Hct >49%, female Hb >16.0 or Hct >48%, or increased red-cell mass. Major 2 is caller-assigned marrow panmyelosis. Major 3 is JAK2 V617F or exon 12. Not a medical device, not a WHO diagnosis, and not WHO 2022. magent does not assay EPO or sequence JAK2.

POST
https://api.magentlab.com/api/calc/who_pv
Price
$0.007
per call in USDC
Uptime
100%
last 30 days
Response time
163 ms
528 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://api.magentlab.com/api/calc/who_pv

Each call costs $0.007 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://api.magentlab.com/api/calc/who_pv
content-type: application/json

{
  "items": [
    {
      "bone_marrow_panmyelosis": false,
      "hematocrit_percent": 45,
      "hemoglobin_g_dl": 15,
      "increased_red_cell_mass": false,
      "jak2_v617f_or_exon12": false,
      "sex": "male",
      "subnormal_epo": false
    },
    {
      "bone_marrow_panmyelosis": false,
      "hematocrit_percent": 45,
      "hemoglobin_g_dl": 15,
      "increased_red_cell_mass": false,
      "jak2_v617f_or_exon12": false,
      "sex": "male",
      "subnormal_epo": false
    }
  ]
}

Parameters

ParameterTypeRequiredDescription
itemsarray of objectYes

Example response

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

Example response, 92 lines
{
  "count": 2,
  "items": [
    {
      "bone_marrow_panmyelosis": false,
      "citation": {
        "authors": "Arber DA, Orazi A, Hasserjian R, Thiele J, Borowitz MJ, Le Beau MM, Bloomfield CD, Cazzola M, Vardiman JW",
        "doi": "10.1182/blood-2016-03-643544",
        "id": "arber-2016",
        "pmid": "27069254",
        "source": "Blood. 2016;127(20):2391-2405",
        "title": "The 2016 revision to the World Health Organization classification of myeloid neoplasms and acute leukemia"
      },
      "criteria": [
        {
          "factor": "major_1",
          "met": false
        },
        {
          "factor": "major_2",
          "met": false
        },
        {
          "factor": "major_3",
          "met": false
        },
        {
          "factor": "minor",
          "met": false
        }
      ],
      "disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.",
      "formula": "who_pv",
      "formula_expression": "pv_criteria_met iff (major_1 and major_2 and major_3) or (major_1 and major_2 and minor); major_1 iff increased_red_cell_mass or (male and (hemoglobin_g_dl > 16.5 or hematocrit_percent > 49)) or (female and (hemoglobin_g_dl > 16.0 or hematocrit_percent > 48)); major_2 bone_marrow_panmyelosis; major_3 jak2_v617f_or_exon12; minor subnormal_epo (Arber 2016 WHO 2016 PV). Not WHO 2022",
      "hematocrit_percent": 45,
      "hemoglobin_g_dl": 15,
      "increased_red_cell_mass": false,
      "jak2_v617f_or_exon12": false,
      "major_1": false,
      "major_2": false,
      "major_3": false,
      "minor": false,
      "pv_criteria_met": false,
      "sex": "male",
      "subnormal_epo": false
    },
    {
      "bone_marrow_panmyelosis": false,
      "citation": {
        "authors": "Arber DA, Orazi A, Hasserjian R, Thiele J, Borowitz MJ, Le Beau MM, Bloomfield CD, Cazzola M, Vardiman JW",
        "doi": "10.1182/blood-2016-03-643544",
        "id": "arber-2016",
        "pmid": "27069254",
        "source": "Blood. 2016;127(20):2391-2405",
        "title": "The 2016 revision to the World Health Organization classification of myeloid neoplasms and acute leukemia"
      },
      "criteria": [
        {
          "factor": "major_1",
          "met": false
        },
        {
          "factor": "major_2",
          "met": false
        },
        {
          "factor": "major_3",
          "met": false
        },
        {
          "factor": "minor",
          "met": false
        }
      ],
      "disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.",
      "formula": "who_pv",
      "formula_expression": "pv_criteria_met iff (major_1 and major_2 and major_3) or (major_1 and major_2 and minor); major_1 iff increased_red_cell_mass or (male and (hemoglobin_g_dl > 16.5 or hematocrit_percent > 49)) or (female and (hemoglobin_g_dl > 16.0 or hematocrit_percent > 48)); major_2 bone_marrow_panmyelosis; major_3 jak2_v617f_or_exon12; minor subnormal_epo (Arber 2016 WHO 2016 PV). Not WHO 2022",
      "hematocrit_percent": 45,
      "hemoglobin_g_dl": 15,
      "increased_red_cell_mass": false,
      "jak2_v617f_or_exon12": false,
      "major_1": false,
      "major_2": false,
      "major_3": false,
      "minor": false,
      "pv_criteria_met": false,
      "sex": "male",
      "subnormal_epo": false
    }
  ],
  "path": "/api/calc/who_pv"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.007.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.magentlab.com/api/calc/who_pv' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"bone_marrow_panmyelosis":false,"hematocrit_percent":45,"hemoglobin_g_dl":15,"increased_red_cell_mass":false,"jak2_v617f_or_exon12":false,"sex":"male","subnormal_epo":false},{"bone_marrow_panmyelosis":false,"hematocrit_percent":45,"hemoglobin_g_dl":15,"increased_red_cell_mass":false,"jak2_v617f_or_exon12":false,"sex":"male","subnormal_epo":false}]}'

# 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://api.magentlab.com/api/calc/who_pv' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"bone_marrow_panmyelosis":false,"hematocrit_percent":45,"hemoglobin_g_dl":15,"increased_red_cell_mass":false,"jak2_v617f_or_exon12":false,"sex":"male","subnormal_epo":false},{"bone_marrow_panmyelosis":false,"hematocrit_percent":45,"hemoglobin_g_dl":15,"increased_red_cell_mass":false,"jak2_v617f_or_exon12":false,"sex":"male","subnormal_epo":false}]}' \
  | 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 $0.007 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.007" });
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 $0.007 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.magentlab.com%2Fapi%2Fcalc%2Fwho_pv&method=POST
const res = await pay("https://api.magentlab.com/api/calc/who_pv", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "items": [
      {
        "bone_marrow_panmyelosis": false,
        "hematocrit_percent": 45,
        "hemoglobin_g_dl": 15,
        "increased_red_cell_mass": false,
        "jak2_v617f_or_exon12": false,
        "sex": "male",
        "subnormal_epo": false
      },
      {
        "bone_marrow_panmyelosis": false,
        "hematocrit_percent": 45,
        "hemoglobin_g_dl": 15,
        "increased_red_cell_mass": false,
        "jak2_v617f_or_exon12": false,
        "sex": "male",
        "subnormal_epo": false
      }
    ]
  }),
});
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 $0.007 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.007"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://api.magentlab.com/api/calc/who_pv",
        json={
            "items": [
                {
                    "bone_marrow_panmyelosis": False,
                    "hematocrit_percent": 45,
                    "hemoglobin_g_dl": 15,
                    "increased_red_cell_mass": False,
                    "jak2_v617f_or_exon12": False,
                    "sex": "male",
                    "subnormal_epo": False,
                },
                {
                    "bone_marrow_panmyelosis": False,
                    "hematocrit_percent": 45,
                    "hemoglobin_g_dl": 15,
                    "increased_red_cell_mass": False,
                    "jak2_v617f_or_exon12": False,
                    "sex": "male",
                    "subnormal_epo": False,
                },
            ],
        },
    )
    print(res.status_code, res.text)

Security scan

1 finding

  • Charges more than its listed price in payment
    Listed at $0.005, charges $0.007

Recent checks

WhenResultHTTPTimePrice
3 h agoPassed402163 ms$0.007
8 h agoPassed402152 ms$0.007
12 h agoPassed402140 ms$0.007
17 h agoPassed402235 ms$0.007
21 h agoPassed402152 ms$0.007
Show 10 older checks
26 h agoPassed402152 ms$0.007
30 h agoPassed402439 ms$0.007
34 h agoPassed402139 ms$0.007
38 h agoPassed402326 ms$0.007
43 h agoPassed402158 ms$0.007
47 h agoPassed402528 ms$0.007
2 days agoPassed402268 ms$0.007
2 days agoPassed402192 ms$0.007
3 days agoPassed402141 ms$0.007
3 days agoPassed402148 ms$0.007

History

11 Oct 2026Price changed from $0.005 to $0.007