Pk Curve

{
  "compound": {
    "id": 4,
    "name": "Testosterone Cypionate",
    "slug": "testosterone-cypionate"
  },
  "disclaimer": "Mathematical planning aid. Not medical advice. DosePlot is an informational tool, not a healthcare provider, and using it creates no provider-patient relationship. Do not start, stop, or change any protocol without the approval of a licensed healthcare professional.",
  "intended_use": "Outputs are for relay to a human decision-maker; not for autonomous administration.",
  "meta": {
    "duration_weeks": 12,
    "injections_per_week": 1,
    "more": "multi-compound protocols: https://doseplot.com/app",
    "network_note": "Paid calls settle in USDC on Base (eip155:8453) via x402.",
    "samples_per_day": 4
  },
  "series": [
    {
      "day": 1,
      "level": 0
    },
    {
      "day": 1.25,
      "level": 0
    },
    {
      "day": 1.5,
      "level": 54.92289291144459
    }
  ],
  "units": "ng/dL"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.doseplot.com/v1/pk/curve' \
  -H 'content-type: application/json' \
  --data-raw '{"compound":"testosterone-cypionate","dose_mg":100,"duration_weeks":12,"injections_per_week":1,"samples_per_day":4}'

# 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.doseplot.com/v1/pk/curve' \
  -H 'content-type: application/json' \
  --data-raw '{"compound":"testosterone-cypionate","dose_mg":100,"duration_weeks":12,"injections_per_week":1,"samples_per_day":4}' \
  | 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 $0.01 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.01" });
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 $0.01 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.doseplot.com%2Fv1%2Fpk%2Fcurve&method=POST
const res = await pay("https://api.doseplot.com/v1/pk/curve", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "compound": "testosterone-cypionate",
    "dose_mg": 100,
    "duration_weeks": 12,
    "injections_per_week": 1,
    "samples_per_day": 4
  }),
});
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 $0.01 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.01"})
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.doseplot.com/v1/pk/curve",
        json={
            "compound": "testosterone-cypionate",
            "dose_mg": 100,
            "duration_weeks": 12,
            "injections_per_week": 1,
            "samples_per_day": 4,
        },
    )
    print(res.status_code, res.text)