Calc Promise

{
  "count": 2,
  "items": [
    {
      "cancer_type": "other",
      "chemotherapy": false,
      "citation": {
        "authors": "Psallidas I, Kanellakis NI, Gerry S, et al.",
        "doi": "10.1016/S1470-2045(18)30294-8",
        "id": "psallidas-2018",
        "pmid": "29908990",
        "source": "Lancet Oncol. 2018;19(7):930-939",
        "title": "Development and validation of response markers to predict survival and pleurodesis success in patients with malignant pleural effusion (PROMISE): a multicohort analysis"
      },
      "components": [
        {
          "factor": "chemotherapy",
          "points": 0,
          "present": false,
          "value": false
        },
        {
          "factor": "radiotherapy",
          "points": 0,
          "present": false,
          "value": false
        },
        {
          "factor": "haemoglobin",
          "points": 1,
          "present": true,
          "value": 15
        },
        {
          "factor": "wbc",
          "points": 4,
          "present": true,
          "value": 8
        },
        {
          "factor": "crp",
          "points": 5,
          "present": true,
          "value": 20
        },
        {
          "factor": "ecog",
          "points": 0,
          "present": false,
          "value": 0
        },
        {
          "factor": "cancer_type",
          "points": 4,
          "present": true,
          "value": "other"
        }
      ],
      "crp_mg_l": 20,
      "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.",
      "ecog": 0,
      "formula": "promise",
      "formula_expression": "clinical PROMISE = previous_chemotherapy (no 0, yes 4) + previous_radiotherapy (no 0, yes 2) + haemoglobin_g_dl (≥16 → 0; 14 to <16 → 1; 12 to <14 → 2; 10 to <12 → 3; <10 → 4) + wbc_10e9_l (<4 → 0; 4 to <6.3 → 2; 6.3 to <10 → 4; 10 to <15.8 → 7; ≥15.8 → 10) + crp_mg_l (<3 → 0; 3 to <10 → 3; 10 to <32 → 5; 32 to <100 → 8; ≥100 → 11) + ECOG (0–1 → 0; 2–4 → 7) + cancer_type (mesothelioma → 0; other → 4; lung → 5); Psallidas 2018 Table 2A; groups A 0–20 <25% 3-month mortality, B 21–27 25% to <50%, C 28–35 50% to <75%, D >35 ≥75%",
      "group": "A",
      "haemoglobin_g_dl": 15,
      "max_score": 43,
      "radiotherapy": false,
      "score": 14,
      "three_month_mortality": "<25%",
      "wbc": 8
    },
    {
      "cancer_type": "other",
      "chemotherapy": false,
      "citation": {
        "authors": "Psallidas I, Kanellakis NI, Gerry S, et al.",
        "doi": "10.1016/S1470-2045(18)30294-8",
        "id": "psallidas-2018",
        "pmid": "29908990",
        "source": "Lancet Oncol. 2018;19(7):930-939",
        "title": "Development and validation of response markers to predict survival and pleurodesis success in patients with malignant pleural effusion (PROMISE): a multicohort analysis"
      },
      "components": [
        {
          "factor": "chemotherapy",
          "points": 0,
          "present": false,
          "value": false
        },
        {
          "factor": "radiotherapy",
          "points": 0,
          "present": false,
          "value": false
        },
        {
          "factor": "haemoglobin",
          "points": 1,
          "present": true,
          "value": 15
        },
        {
          "factor": "wbc",
          "points": 4,
          "present": true,
          "value": 8
        },
        {
          "factor": "crp",
          "points": 5,
          "present": true,
          "value": 20
        },
        {
          "factor": "ecog",
          "points": 0,
          "present": false,
          "value": 0
        },
        {
          "factor": "cancer_type",
          "points": 4,
          "present": true,
          "value": "other"
        }
      ],
      "crp_mg_l": 20,
      "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.",
      "ecog": 0,
      "formula": "promise",
      "formula_expression": "clinical PROMISE = previous_chemotherapy (no 0, yes 4) + previous_radiotherapy (no 0, yes 2) + haemoglobin_g_dl (≥16 → 0; 14 to <16 → 1; 12 to <14 → 2; 10 to <12 → 3; <10 → 4) + wbc_10e9_l (<4 → 0; 4 to <6.3 → 2; 6.3 to <10 → 4; 10 to <15.8 → 7; ≥15.8 → 10) + crp_mg_l (<3 → 0; 3 to <10 → 3; 10 to <32 → 5; 32 to <100 → 8; ≥100 → 11) + ECOG (0–1 → 0; 2–4 → 7) + cancer_type (mesothelioma → 0; other → 4; lung → 5); Psallidas 2018 Table 2A; groups A 0–20 <25% 3-month mortality, B 21–27 25% to <50%, C 28–35 50% to <75%, D >35 ≥75%",
      "group": "A",
      "haemoglobin_g_dl": 15,
      "max_score": 43,
      "radiotherapy": false,
      "score": 14,
      "three_month_mortality": "<25%",
      "wbc": 8
    }
  ],
  "path": "/api/calc/promise"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.magentlab.com/api/calc/promise' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"cancer_type":"other","chemotherapy":false,"crp_mg_l":20,"ecog":0,"haemoglobin_g_dl":15,"radiotherapy":false,"wbc":8},{"cancer_type":"other","chemotherapy":false,"crp_mg_l":20,"ecog":0,"haemoglobin_g_dl":15,"radiotherapy":false,"wbc":8}]}'

# 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/promise' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"cancer_type":"other","chemotherapy":false,"crp_mg_l":20,"ecog":0,"haemoglobin_g_dl":15,"radiotherapy":false,"wbc":8},{"cancer_type":"other","chemotherapy":false,"crp_mg_l":20,"ecog":0,"haemoglobin_g_dl":15,"radiotherapy":false,"wbc":8}]}' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode

// 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%2Fpromise&method=POST
const res = await pay("https://api.magentlab.com/api/calc/promise", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "items": [
      {
        "cancer_type": "other",
        "chemotherapy": false,
        "crp_mg_l": 20,
        "ecog": 0,
        "haemoglobin_g_dl": 15,
        "radiotherapy": false,
        "wbc": 8
      },
      {
        "cancer_type": "other",
        "chemotherapy": false,
        "crp_mg_l": 20,
        "ecog": 0,
        "haemoglobin_g_dl": 15,
        "radiotherapy": false,
        "wbc": 8
      }
    ]
  }),
});
console.log(res.status, await res.text());

# 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/promise",
        json={
            "items": [
                {
                    "cancer_type": "other",
                    "chemotherapy": False,
                    "crp_mg_l": 20,
                    "ecog": 0,
                    "haemoglobin_g_dl": 15,
                    "radiotherapy": False,
                    "wbc": 8,
                },
                {
                    "cancer_type": "other",
                    "chemotherapy": False,
                    "crp_mg_l": 20,
                    "ecog": 0,
                    "haemoglobin_g_dl": 15,
                    "radiotherapy": False,
                    "wbc": 8,
                },
            ],
        },
    )
    print(res.status_code, res.text)