Biology Sequence Composition

{
  "data": {
    "chargedAmount": "10041",
    "inputHash": "sha256:ac560e89cdf8467db58556615d2c74edac8fef1de7464665ebc85df01…",
    "limitations": [
      "Public or synthetic inputs only. Caller labels are declarations,…"
    ],
    "productId": "biology-dna-rna-composition",
    "result": {
      "findings": {
        "ambiguousFraction": 0.333333333333,
        "calledBases": 4,
        "counts": {
          "A": 1,
          "C": 1,
          "G": 1,
          "N": 2,
          "T": 1,
          "U": 0
        },
        "gcFractionOfCalledBases": 0.5
      },
      "limitations": [
        "Public or synthetic research inputs only; no patient, personal g…"
      ],
      "methodVersion": "maha-science50/1.0.0",
      "numericPrecision": "IEEE754-double; finite outputs rounded to 12 significant digits"
    },
    "resultHash": "sha256:c8d1a0cc5dc7fd0e5ea1048f8ee8b8193780009213061af4905a214a7…",
    "sourceContractAmount": "6001",
    "version": "maha-legacy-adapter/1"
  },
  "proof": {
    "settlement_id": "0x00000000000000000000000000000000000000000000000000000000000000…"
  },
  "success": true
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://www.mahastrategies.com/api/v1/compute/biology/sequence-composition' \
  -H 'content-type: application/json' \
  --data-raw '{"alphabet":"DNA","dataClass":"synthetic","sequence":"ACGTNN"}'

# 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://www.mahastrategies.com/api/v1/compute/biology/sequence-composition' \
  -H 'content-type: application/json' \
  --data-raw '{"alphabet":"DNA","dataClass":"synthetic","sequence":"ACGTNN"}' \
  | 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 $0.010041 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.010041" });
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 $0.010041 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fwww.mahastrategies.com%2Fapi%2Fv1%2Fcompute%2Fbiology%2Fsequence-composition&method=POST
const res = await pay("https://www.mahastrategies.com/api/v1/compute/biology/sequence-composition", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "alphabet": "DNA",
    "dataClass": "synthetic",
    "sequence": "ACGTNN"
  }),
});
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 $0.010041 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.010041"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://www.mahastrategies.com/api/v1/compute/biology/sequence-composition",
        json={
            "alphabet": "DNA",
            "dataClass": "synthetic",
            "sequence": "ACGTNN",
        },
    )
    print(res.status_code, res.text)