67trust / 100

Calc Dhrs

by magent in Other

x402 APIFailing, checked 4 h ago

Haukoos 2012 Table 2 FULL Denver HIV score (not abbreviated). Age bands, sex, ethnicity, and five caller-assigned flags (sm vi rai idu pht). Range -14 to 81. Caller-assigned. Not a diagnosis.

POST

https://api.magentlab.com/api/calc/dhrs

Price: $0.007; per call in USDC
Uptime: 91.4%; last 30 days
Response time: 159 ms; 511 ms slowest 5%
Last check: Failed; 4 h ago, next any minute now

Run a free test call How to call it

Reliability

All checks passedSome failedAll failedNot checked

Latest check failed 4 h ago: Timed out

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

How to call it

POST https://api.magentlab.com/api/calc/dhrs

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/dhrs
content-type: application/json

{
  "items": [
    {
      "age": 20,
      "ethnicity": "white",
      "idu": false,
      "pht": false,
      "rai": false,
      "sex": "female",
      "sm": false,
      "vi": false
    },
    {
      "age": 20,
      "ethnicity": "white",
      "idu": false,
      "pht": false,
      "rai": false,
      "sex": "female",
      "sm": false,
      "vi": false
    }
  ]
}

Parameters

Parameter	Type	Required	Description
`items`	array of object	Yes

Example response

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

Example response, 148 lines

{
  "count": 2,
  "items": [
    {
      "age_years": 20,
      "band": "very_low",
      "citation": {
        "authors": "Haukoos JS, Lyons MS, Lindsell CJ, Hopkins E, Bender B, Rothman RE, Hsieh YH, MacLaren LA, Thrun MW, Sasson C, Byyny RL",
        "doi": "10.1093/aje/kwr389",
        "id": "haukoos-2012-denver-hiv",
        "pmid": "22425121",
        "source": "Am J Epidemiol. 2012;175(8):838-846",
        "title": "Derivation and Validation of the Denver Human Immunodeficiency Virus (HIV) Risk Score for Targeted HIV Screening"
      },
      "components": [
        {
          "factor": "age",
          "points": 0,
          "present": false,
          "value": 20
        },
        {
          "factor": "sex",
          "points": 0,
          "present": false,
          "value": "female"
        },
        {
          "factor": "ethnicity",
          "points": 0,
          "present": false,
          "value": "white"
        },
        {
          "factor": "sm",
          "points": 0,
          "present": false
        },
        {
          "factor": "vi",
          "points": 0,
          "present": false
        },
        {
          "factor": "rai",
          "points": 0,
          "present": false
        },
        {
          "factor": "idu",
          "points": 0,
          "present": false
        },
        {
          "factor": "pht",
          "points": 0,
          "present": false
        }
      ],
      "derivation_hiv_percent": 0.12,
      "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.",
      "ethnicity": "white",
      "formula": "denver_hiv",
      "formula_expression": "Denver HIV (Haukoos 2012 Table 2 FULL pruned) = age (<22 or >60 0; 22-25 or 55-60 4; 26-32 or 47-54 10; 33-46 12) + sex (female 0, male 21) + ethnicity (black 9, hispanic 3, white 0, other 0) + sex_with_male 22 + vaginal_intercourse -10 + receptive_anal_intercourse 8 + injection_drug_use 9 + past_hiv_testing -4; flags independent, not mutually exclusive; range -14 to 81; <20 very_low derivation 0.12%, 20-29 low 0.24%, 30-39 moderate 0.67%, 40-49 high 2.28%, >=50 very_high 5.66%",
      "idu": false,
      "max_score": 81,
      "min_score": -14,
      "pht": false,
      "rai": false,
      "score": 0,
      "sex": "female",
      "sm": false,
      "vi": false
    },
    {
      "age_years": 20,
      "band": "very_low",
      "citation": {
        "authors": "Haukoos JS, Lyons MS, Lindsell CJ, Hopkins E, Bender B, Rothman RE, Hsieh YH, MacLaren LA, Thrun MW, Sasson C, Byyny RL",
        "doi": "10.1093/aje/kwr389",
        "id": "haukoos-2012-denver-hiv",
        "pmid": "22425121",
        "source": "Am J Epidemiol. 2012;175(8):838-846",
        "title": "Derivation and Validation of the Denver Human Immunodeficiency Virus (HIV) Risk Score for Targeted HIV Screening"
      },
      "components": [
        {
          "factor": "age",
          "points": 0,
          "present": false,
          "value": 20
        },
        {
          "factor": "sex",
          "points": 0,
          "present": false,
          "value": "female"
        },
        {
          "factor": "ethnicity",
          "points": 0,
          "present": false,
          "value": "white"
        },
        {
          "factor": "sm",
          "points": 0,
          "present": false
        },
        {
          "factor": "vi",
          "points": 0,
          "present": false
        },
        {
          "factor": "rai",
          "points": 0,
          "present": false
        },
        {
          "factor": "idu",
          "points": 0,
          "present": false
        },
        {
          "factor": "pht",
          "points": 0,
          "present": false
        }
      ],
      "derivation_hiv_percent": 0.12,
      "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.",
      "ethnicity": "white",
      "formula": "denver_hiv",
      "formula_expression": "Denver HIV (Haukoos 2012 Table 2 FULL pruned) = age (<22 or >60 0; 22-25 or 55-60 4; 26-32 or 47-54 10; 33-46 12) + sex (female 0, male 21) + ethnicity (black 9, hispanic 3, white 0, other 0) + sex_with_male 22 + vaginal_intercourse -10 + receptive_anal_intercourse 8 + injection_drug_use 9 + past_hiv_testing -4; flags independent, not mutually exclusive; range -14 to 81; <20 very_low derivation 0.12%, 20-29 low 0.24%, 30-39 moderate 0.67%, 40-49 high 2.28%, >=50 very_high 5.66%",
      "idu": false,
      "max_score": 81,
      "min_score": -14,
      "pht": false,
      "rai": false,
      "score": 0,
      "sex": "female",
      "sm": false,
      "vi": false
    }
  ],
  "path": "/api/calc/dhrs"
}

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/dhrs' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"age":20,"ethnicity":"white","idu":false,"pht":false,"rai":false,"sex":"female","sm":false,"vi":false},{"age":20,"ethnicity":"white","idu":false,"pht":false,"rai":false,"sex":"female","sm":false,"vi":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/dhrs' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"age":20,"ethnicity":"white","idu":false,"pht":false,"rai":false,"sex":"female","sm":false,"vi":false},{"age":20,"ethnicity":"white","idu":false,"pht":false,"rai":false,"sex":"female","sm":false,"vi":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%2Fdhrs&method=POST
const res = await pay("https://api.magentlab.com/api/calc/dhrs", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "items": [
      {
        "age": 20,
        "ethnicity": "white",
        "idu": false,
        "pht": false,
        "rai": false,
        "sex": "female",
        "sm": false,
        "vi": false
      },
      {
        "age": 20,
        "ethnicity": "white",
        "idu": false,
        "pht": false,
        "rai": false,
        "sex": "female",
        "sm": false,
        "vi": 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/dhrs",
        json={
            "items": [
                {
                    "age": 20,
                    "ethnicity": "white",
                    "idu": False,
                    "pht": False,
                    "rai": False,
                    "sex": "female",
                    "sm": False,
                    "vi": False,
                },
                {
                    "age": 20,
                    "ethnicity": "white",
                    "idu": False,
                    "pht": False,
                    "rai": False,
                    "sex": "female",
                    "sm": False,
                    "vi": 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

When	Result	HTTP	Time	Price
4 h ago	Timed out	-	-	-
9 h ago	Timed out	-	-	-
13 h ago	Timed out	-	-	-
18 h ago	Passed	402	234 ms	$0.007
23 h ago	Passed	402	157 ms	$0.007

Show 10 older checks

28 h ago	Passed	402	158 ms	$0.007
32 h ago	Passed	402	503 ms	$0.007
37 h ago	Passed	402	367 ms	$0.007
41 h ago	Passed	402	158 ms	$0.007
46 h ago	Passed	402	519 ms	$0.007
2 days ago	Passed	402	167 ms	$0.007
2 days ago	Passed	402	159 ms	$0.007
2 days ago	Passed	402	151 ms	$0.007
3 days ago	Passed	402	161 ms	$0.007
3 days ago	Passed	402	143 ms	$0.007

History

11 Oct 2026	Price changed from $0.005 to $0.007

Trust score 67/ 100

Availability (30-day uptime)		27 / 30
Valid x402 challenge		15 / 15
Response time		10 / 10
Real paying agents (30 days)		5 / 15
Charges what it lists		0 / 10
Security scan		10 / 10
Verified owner		0 / 10

How the score works

Payment terms

Price: $0.007 per call
Listed at: $0.005 (charges more)
Token: USDC
Networks: Base
Pays to: 0x836B…9Ee2

Real usage

Paying agents: 2 in 30 days
Paid calls: 5 in 30 days
Last paid call: 5 days ago

Source: x402 Bazaar settlement data.

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Trust score

[![ToolVet trust score](https://toolvet.app/badge/calc-dhrs.svg)](https://toolvet.app/s/calc-dhrs)