70trust / 100

Calc Psi Port

x402 APIPassing, checked 4 h ago

Fine 1997 Pneumonia Severity Index (PSI/PORT): Class I if age ≤50 and no neoplastic, liver, CHF, cerebrovascular, or renal disease, no AMS, HR <125, RR <30, SBP >=90, and temperature 35 to <40 C. Otherwise Table 2 points (age, or age-10 if female, plus comorbidity, vital-sign, and laboratory weights) map to classes II-V. Always returns the Table 2 total. Not a medical device and not a site-of-care decision.

POST

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

Price: $0.007; per call in USDC
Uptime: 100%; last 30 days
Response time: 175 ms; 521 ms slowest 5%
Last check: Passed; 4 h ago, next any minute now

Run a free test call How 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/psi_port

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/psi_port
content-type: application/json

{
  "items": [
    {
      "age": 45,
      "altered_mental_status": false,
      "arterial_ph": 7.4,
      "bun_mg_dl": 14,
      "cerebrovascular": false,
      "chf": false,
      "glucose_mg_dl": 90,
      "heart_rate_bpm": 80,
      "hematocrit_percent": 42,
      "liver_disease": false,
      "neoplastic": false,
      "nursing_home": false,
      "pao2_mm_hg": 90,
      "pleural_effusion": false,
      "renal_disease": false,
      "respiratory_rate": 16,
      "sex": "male",
      "sodium_mmol_l": 140,
      "systolic_mm_hg": 120,
      "temperature_c": 37
    },
    {
      "age": 45,
      "altered_mental_status": false,
      "arterial_ph": 7.4,
      "bun_mg_dl": 14,
      "cerebrovascular": false,
      "chf": false,
      "glucose_mg_dl": 90,
      "heart_rate_bpm": 80,
      "hematocrit_percent": 42,
      "liver_disease": false,
      "neoplastic": false,
      "nursing_home": false,
      "pao2_mm_hg": 90,
      "pleural_effusion": false,
      "renal_disease": false,
      "respiratory_rate": 16,
      "sex": "male",
      "sodium_mmol_l": 140,
      "systolic_mm_hg": 120,
      "temperature_c": 37
    }
  ]
}

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, 254 lines

{
  "count": 2,
  "items": [
    {
      "age_years": 45,
      "citation": {
        "authors": "Fine MJ, Auble TE, Yealy DM, et al.",
        "doi": "10.1056/NEJM199701233360402",
        "id": "fine-1997",
        "pmid": "8995086",
        "source": "N Engl J Med. 1997;336(4):243-250",
        "title": "A prediction rule to identify low-risk patients with community-acquired pneumonia"
      },
      "components": [
        {
          "factor": "age",
          "points": 45,
          "present": true,
          "value": 45
        },
        {
          "factor": "nursing_home",
          "points": 0,
          "present": false
        },
        {
          "factor": "neoplastic",
          "points": 0,
          "present": false
        },
        {
          "factor": "liver_disease",
          "points": 0,
          "present": false
        },
        {
          "factor": "chf",
          "points": 0,
          "present": false
        },
        {
          "factor": "cerebrovascular",
          "points": 0,
          "present": false
        },
        {
          "factor": "renal_disease",
          "points": 0,
          "present": false
        },
        {
          "factor": "altered_mental_status",
          "points": 0,
          "present": false
        },
        {
          "factor": "respiratory_rate_ge_30",
          "points": 0,
          "present": false,
          "value": 16
        },
        {
          "factor": "systolic_mm_hg_lt_90",
          "points": 0,
          "present": false,
          "value": 120
        },
        {
          "factor": "temperature_extreme",
          "points": 0,
          "present": false,
          "value": 37
        },
        {
          "factor": "heart_rate_ge_125",
          "points": 0,
          "present": false,
          "value": 80
        },
        {
          "factor": "arterial_ph_lt_7_35",
          "points": 0,
          "present": false,
          "value": 7.4
        },
        {
          "factor": "bun_ge_30",
          "points": 0,
          "present": false,
          "value": 14
        },
        {
          "factor": "sodium_lt_130",
          "points": 0,
          "present": false,
          "value": 140
        },
        {
          "factor": "glucose_ge_250",
          "points": 0,
          "present": false,
          "value": 90
        },
        {
          "factor": "hematocrit_lt_30",
          "points": 0,
          "present": false,
          "value": 42
        },
        {
          "factor": "pao2_lt_60",
          "points": 0,
          "present": false,
          "value": 90
        },
        {
          "factor": "pleural_effusion",
          "points": 0,
          "present": 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": "psi_port",
      "formula_expression": "PSI/PORT two-step (Fine 1997): Class I if age<=50 and no neoplastic, liver, CHF, cerebrovascular, renal, AMS and HR<125, RR<30, SBP>=90, temp>=35 and <40; else Table 2 points: age (men) or age-10 (women) + nursing_home 10 + neoplastic 30 + liver 20 + CHF 10 + cerebrovascular 10 + renal 10 + AMS 20 + RR>=30 20 + SBP<90 20 + (temp<35 or >=40) 15 + HR>=125 10 + pH<7.35 30 + BUN>=30 20 + Na<130 20 + glucose>=250 10 + Hct<30 10 + PaO2<60 10 + pleural_effusion 10; class I from step 1 else 2 if <=70, 3 if 71-90, 4 if 91-130, 5 if >130",
      "risk_class": 1,
      "score": 45
    },
    {
      "age_years": 45,
      "citation": {
        "authors": "Fine MJ, Auble TE, Yealy DM, et al.",
        "doi": "10.1056/NEJM199701233360402",
        "id": "fine-1997",
        "pmid": "8995086",
        "source": "N Engl J Med. 1997;336(4):243-250",
        "title": "A prediction rule to identify low-risk patients with community-acquired pneumonia"
      },
      "components": [
        {
          "factor": "age",
          "points": 45,
          "present": true,
          "value": 45
        },
        {
          "factor": "nursing_home",
          "points": 0,
          "present": false
        },
        {
          "factor": "neoplastic",
          "points": 0,
          "present": false
        },
        {
          "factor": "liver_disease",
          "points": 0,
          "present": false
        },
        {
          "factor": "chf",
          "points": 0,
          "present": false
        },
        {
          "factor": "cerebrovascular",
          "points": 0,
          "present": false
        },
        {
          "factor": "renal_disease",
          "points": 0,
          "present": false
        },
        {
          "factor": "altered_mental_status",
          "points": 0,
          "present": false
        },
        {
          "factor": "respiratory_rate_ge_30",
          "points": 0,
          "present": false,
          "value": 16
        },
        {
          "factor": "systolic_mm_hg_lt_90",
          "points": 0,
          "present": false,
          "value": 120
        },
        {
          "factor": "temperature_extreme",
          "points": 0,
          "present": false,
          "value": 37
        },
        {
          "factor": "heart_rate_ge_125",
          "points": 0,
          "present": false,
          "value": 80
        },
        {
          "factor": "arterial_ph_lt_7_35",
          "points": 0,
          "present": false,
          "value": 7.4
        },
        {
          "factor": "bun_ge_30",
          "points": 0,
          "present": false,
          "value": 14
        },
        {
          "factor": "sodium_lt_130",
          "points": 0,
          "present": false,
          "value": 140
        },
        {
          "factor": "glucose_ge_250",
          "points": 0,
          "present": false,
          "value": 90
        },
        {
          "factor": "hematocrit_lt_30",
          "points": 0,
          "present": false,
          "value": 42
        },
        {
          "factor": "pao2_lt_60",
          "points": 0,
          "present": false,
          "value": 90
        },
        {
          "factor": "pleural_effusion",
          "points": 0,
          "present": 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": "psi_port",
      "formula_expression": "PSI/PORT two-step (Fine 1997): Class I if age<=50 and no neoplastic, liver, CHF, cerebrovascular, renal, AMS and HR<125, RR<30, SBP>=90, temp>=35 and <40; else Table 2 points: age (men) or age-10 (women) + nursing_home 10 + neoplastic 30 + liver 20 + CHF 10 + cerebrovascular 10 + renal 10 + AMS 20 + RR>=30 20 + SBP<90 20 + (temp<35 or >=40) 15 + HR>=125 10 + pH<7.35 30 + BUN>=30 20 + Na<130 20 + glucose>=250 10 + Hct<30 10 + PaO2<60 10 + pleural_effusion 10; class I from step 1 else 2 if <=70, 3 if 71-90, 4 if 91-130, 5 if >130",
      "risk_class": 1,
      "score": 45
    }
  ],
  "path": "/api/calc/psi_port"
}

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/psi_port' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"age":45,"altered_mental_status":false,"arterial_ph":7.4,"bun_mg_dl":14,"cerebrovascular":false,"chf":false,"glucose_mg_dl":90,"heart_rate_bpm":80,"hematocrit_percent":42,"liver_disease":false,"neoplastic":false,"nursing_home":false,"pao2_mm_hg":90,"pleural_effusion":false,"renal_disease":false,"respiratory_rate":16,"sex":"male","sodium_mmol_l":140,"systolic_mm_hg":120,"temperature_c":37},{"age":45,"altered_mental_status":false,"arterial_ph":7.4,"bun_mg_dl":14,"cerebrovascular":false,"chf":false,"glucose_mg_dl":90,"heart_rate_bpm":80,"hematocrit_percent":42,"liver_disease":false,"neoplastic":false,"nursing_home":false,"pao2_mm_hg":90,"pleural_effusion":false,"renal_disease":false,"respiratory_rate":16,"sex":"male","sodium_mmol_l":140,"systolic_mm_hg":120,"temperature_c":37}]}'

# 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/psi_port' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"age":45,"altered_mental_status":false,"arterial_ph":7.4,"bun_mg_dl":14,"cerebrovascular":false,"chf":false,"glucose_mg_dl":90,"heart_rate_bpm":80,"hematocrit_percent":42,"liver_disease":false,"neoplastic":false,"nursing_home":false,"pao2_mm_hg":90,"pleural_effusion":false,"renal_disease":false,"respiratory_rate":16,"sex":"male","sodium_mmol_l":140,"systolic_mm_hg":120,"temperature_c":37},{"age":45,"altered_mental_status":false,"arterial_ph":7.4,"bun_mg_dl":14,"cerebrovascular":false,"chf":false,"glucose_mg_dl":90,"heart_rate_bpm":80,"hematocrit_percent":42,"liver_disease":false,"neoplastic":false,"nursing_home":false,"pao2_mm_hg":90,"pleural_effusion":false,"renal_disease":false,"respiratory_rate":16,"sex":"male","sodium_mmol_l":140,"systolic_mm_hg":120,"temperature_c":37}]}' \
  | 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%2Fpsi_port&method=POST
const res = await pay("https://api.magentlab.com/api/calc/psi_port", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "items": [
      {
        "age": 45,
        "altered_mental_status": false,
        "arterial_ph": 7.4,
        "bun_mg_dl": 14,
        "cerebrovascular": false,
        "chf": false,
        "glucose_mg_dl": 90,
        "heart_rate_bpm": 80,
        "hematocrit_percent": 42,
        "liver_disease": false,
        "neoplastic": false,
        "nursing_home": false,
        "pao2_mm_hg": 90,
        "pleural_effusion": false,
        "renal_disease": false,
        "respiratory_rate": 16,
        "sex": "male",
        "sodium_mmol_l": 140,
        "systolic_mm_hg": 120,
        "temperature_c": 37
      },
      {
        "age": 45,
        "altered_mental_status": false,
        "arterial_ph": 7.4,
        "bun_mg_dl": 14,
        "cerebrovascular": false,
        "chf": false,
        "glucose_mg_dl": 90,
        "heart_rate_bpm": 80,
        "hematocrit_percent": 42,
        "liver_disease": false,
        "neoplastic": false,
        "nursing_home": false,
        "pao2_mm_hg": 90,
        "pleural_effusion": false,
        "renal_disease": false,
        "respiratory_rate": 16,
        "sex": "male",
        "sodium_mmol_l": 140,
        "systolic_mm_hg": 120,
        "temperature_c": 37
      }
    ]
  }),
});
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/psi_port",
        json={
            "items": [
                {
                    "age": 45,
                    "altered_mental_status": False,
                    "arterial_ph": 7.4,
                    "bun_mg_dl": 14,
                    "cerebrovascular": False,
                    "chf": False,
                    "glucose_mg_dl": 90,
                    "heart_rate_bpm": 80,
                    "hematocrit_percent": 42,
                    "liver_disease": False,
                    "neoplastic": False,
                    "nursing_home": False,
                    "pao2_mm_hg": 90,
                    "pleural_effusion": False,
                    "renal_disease": False,
                    "respiratory_rate": 16,
                    "sex": "male",
                    "sodium_mmol_l": 140,
                    "systolic_mm_hg": 120,
                    "temperature_c": 37,
                },
                {
                    "age": 45,
                    "altered_mental_status": False,
                    "arterial_ph": 7.4,
                    "bun_mg_dl": 14,
                    "cerebrovascular": False,
                    "chf": False,
                    "glucose_mg_dl": 90,
                    "heart_rate_bpm": 80,
                    "hematocrit_percent": 42,
                    "liver_disease": False,
                    "neoplastic": False,
                    "nursing_home": False,
                    "pao2_mm_hg": 90,
                    "pleural_effusion": False,
                    "renal_disease": False,
                    "respiratory_rate": 16,
                    "sex": "male",
                    "sodium_mmol_l": 140,
                    "systolic_mm_hg": 120,
                    "temperature_c": 37,
                },
            ],
        },
    )
    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	Passed	402	146 ms	$0.007
9 h ago	Passed	402	383 ms	$0.007
14 h ago	Passed	402	459 ms	$0.007
18 h ago	Passed	402	158 ms	$0.007
23 h ago	Passed	402	183 ms	$0.007

Show 10 older checks

27 h ago	Passed	402	188 ms	$0.007
32 h ago	Passed	402	318 ms	$0.007
36 h ago	Passed	402	446 ms	$0.007
40 h ago	Passed	402	176 ms	$0.007
44 h ago	Passed	402	288 ms	$0.007
2 days ago	Passed	402	289 ms	$0.007
2 days ago	Passed	402	344 ms	$0.007
2 days ago	Passed	402	163 ms	$0.007
3 days ago	Passed	402	187 ms	$0.007
3 days ago	Passed	402	171 ms	$0.007

History

11 Oct 2026	Price changed from $0.005 to $0.007

Trust score 70/ 100

Availability (30-day uptime)		30 / 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: 4 days ago

Source: x402 Bazaar settlement data.

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Trust score

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