Codes Lookup

{
  "count": 2,
  "items": [
    {
      "billable": null,
      "catalog": {
        "coverage": "seed",
        "coverage_meaning": "Compiled seed catalog. Production coverage=full is gold-gated Current Prescribable RxNorm + ICD-10-CM + LOINC, not complete monthly RxNorm or UMLS.",
        "notes": "ICD-10 entries are ICD-10-CM (US claims), not WHO ICD-10. RxNorm codes are RxCUI. LOINC codes are official LOINC numerics. coverage=full never means complete UMLS.",
        "source": "magent curated seed",
        "stale": false,
        "systems": [
          "rxnorm",
          "icd10",
          "loinc"
        ],
        "verified_at": null,
        "version": "2026.08-wedge"
      },
      "code": "198440",
      "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.",
      "display": "acetaminophen 500 MG Oral Tablet",
      "found": true,
      "obsolete": false,
      "status": "current",
      "synonyms": [
        "tylenol 500mg",
        "tylenol 500 mg",
        "acetaminophen 500mg",
        "acetaminophen 500 mg tablet",
        "paracetamol 500 mg"
      ],
      "system": "rxnorm",
      "tty": "SCD"
    },
    {
      "billable": null,
      "catalog": {
        "coverage": "seed",
        "coverage_meaning": "Compiled seed catalog. Production coverage=full is gold-gated Current Prescribable RxNorm + ICD-10-CM + LOINC, not complete monthly RxNorm or UMLS.",
        "notes": "ICD-10 entries are ICD-10-CM (US claims), not WHO ICD-10. RxNorm codes are RxCUI. LOINC codes are official LOINC numerics. coverage=full never means complete UMLS.",
        "source": "magent curated seed",
        "stale": false,
        "systems": [
          "rxnorm",
          "icd10",
          "loinc"
        ],
        "verified_at": null,
        "version": "2026.08-wedge"
      },
      "code": "198440",
      "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.",
      "display": "acetaminophen 500 MG Oral Tablet",
      "found": true,
      "obsolete": false,
      "status": "current",
      "synonyms": [
        "tylenol 500mg",
        "tylenol 500 mg",
        "acetaminophen 500mg",
        "acetaminophen 500 mg tablet",
        "paracetamol 500 mg"
      ],
      "system": "rxnorm",
      "tty": "SCD"
    }
  ],
  "path": "/api/codes/lookup"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.magentlab.com/api/codes/lookup' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"code":"198440","system":"rxnorm"},{"code":"198440","system":"rxnorm"}]}'

# 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/codes/lookup' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"code":"198440","system":"rxnorm"},{"code":"198440","system":"rxnorm"}]}' \
  | 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%2Fcodes%2Flookup&method=POST
const res = await pay("https://api.magentlab.com/api/codes/lookup", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "items": [
      {
        "code": "198440",
        "system": "rxnorm"
      },
      {
        "code": "198440",
        "system": "rxnorm"
      }
    ]
  }),
});
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/codes/lookup",
        json={
            "items": [
                {
                    "code": "198440",
                    "system": "rxnorm",
                },
                {
                    "code": "198440",
                    "system": "rxnorm",
                },
            ],
        },
    )
    print(res.status_code, res.text)