Calc Rip

{
  "count": 2,
  "items": [
    {
      "age": 40,
      "citation": {
        "authors": "Hevesi M, Heidenreich MJ, Camp CL, Hewett TE, Stuart MJ, Dahm DL, Krych AJ",
        "doi": "10.1016/j.arthro.2018.09.017",
        "id": "hevesi-2019",
        "pmid": "30612768",
        "source": "Arthroscopy. 2019;35(3):953-960",
        "title": "The Recurrent Instability of the Patella Score: A Statistically Based Model for Prediction of Long-Term Recurrence Risk After First-Time Dislocation"
      },
      "components": [
        {
          "factor": "age",
          "points": 0,
          "present": false,
          "value": 40
        },
        {
          "factor": "skeletal_immature",
          "points": 0,
          "present": false
        },
        {
          "factor": "trochlear_dysplasia",
          "points": 0,
          "present": false
        },
        {
          "factor": "tt_tg_pl_ratio",
          "points": 0,
          "present": false,
          "value": 0.3
        }
      ],
      "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": "rip",
      "formula_expression": "RIP = age_points (<25 → 2, ≥25 → 0) + skeletal_immature 1 + trochlear_dysplasia 1 + (tt_tg_pl_ratio ≥ 0.5 → 1); Hevesi 2019; max 5; risk 0-1 low, 2-3 intermediate, 4+ high (10-year recurrent instability 0.0% / 30.6% / 79.2%)",
      "max_score": 5,
      "risk": "low",
      "score": 0,
      "skeletal_immature": false,
      "trochlear_dysplasia": false,
      "tt_tg_pl_ratio": 0.3
    },
    {
      "age": 40,
      "citation": {
        "authors": "Hevesi M, Heidenreich MJ, Camp CL, Hewett TE, Stuart MJ, Dahm DL, Krych AJ",
        "doi": "10.1016/j.arthro.2018.09.017",
        "id": "hevesi-2019",
        "pmid": "30612768",
        "source": "Arthroscopy. 2019;35(3):953-960",
        "title": "The Recurrent Instability of the Patella Score: A Statistically Based Model for Prediction of Long-Term Recurrence Risk After First-Time Dislocation"
      },
      "components": [
        {
          "factor": "age",
          "points": 0,
          "present": false,
          "value": 40
        },
        {
          "factor": "skeletal_immature",
          "points": 0,
          "present": false
        },
        {
          "factor": "trochlear_dysplasia",
          "points": 0,
          "present": false
        },
        {
          "factor": "tt_tg_pl_ratio",
          "points": 0,
          "present": false,
          "value": 0.3
        }
      ],
      "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": "rip",
      "formula_expression": "RIP = age_points (<25 → 2, ≥25 → 0) + skeletal_immature 1 + trochlear_dysplasia 1 + (tt_tg_pl_ratio ≥ 0.5 → 1); Hevesi 2019; max 5; risk 0-1 low, 2-3 intermediate, 4+ high (10-year recurrent instability 0.0% / 30.6% / 79.2%)",
      "max_score": 5,
      "risk": "low",
      "score": 0,
      "skeletal_immature": false,
      "trochlear_dysplasia": false,
      "tt_tg_pl_ratio": 0.3
    }
  ],
  "path": "/api/calc/rip"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.magentlab.com/api/calc/rip' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"age":40,"skeletal_immature":false,"trochlear_dysplasia":false,"tt_tg_pl_ratio":0.3},{"age":40,"skeletal_immature":false,"trochlear_dysplasia":false,"tt_tg_pl_ratio":0.3}]}'

# 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/rip' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"age":40,"skeletal_immature":false,"trochlear_dysplasia":false,"tt_tg_pl_ratio":0.3},{"age":40,"skeletal_immature":false,"trochlear_dysplasia":false,"tt_tg_pl_ratio":0.3}]}' \
  | 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%2Frip&method=POST
const res = await pay("https://api.magentlab.com/api/calc/rip", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "items": [
      {
        "age": 40,
        "skeletal_immature": false,
        "trochlear_dysplasia": false,
        "tt_tg_pl_ratio": 0.3
      },
      {
        "age": 40,
        "skeletal_immature": false,
        "trochlear_dysplasia": false,
        "tt_tg_pl_ratio": 0.3
      }
    ]
  }),
});
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/rip",
        json={
            "items": [
                {
                    "age": 40,
                    "skeletal_immature": False,
                    "trochlear_dysplasia": False,
                    "tt_tg_pl_ratio": 0.3,
                },
                {
                    "age": 40,
                    "skeletal_immature": False,
                    "trochlear_dysplasia": False,
                    "tt_tg_pl_ratio": 0.3,
                },
            ],
        },
    )
    print(res.status_code, res.text)