Weighted Grade

{
  "asOf": "2026-10-12T01:53:43.327Z",
  "degraded": false,
  "disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
  "gpaPoints": 3,
  "highestItem": "Homework",
  "items": [
    {
      "name": "Homework",
      "percent": 90,
      "pointsContributed": 36,
      "weight": 40
    },
    {
      "name": "Exams",
      "percent": 80,
      "pointsContributed": 48,
      "weight": 60
    }
  ],
  "letter": "B",
  "lowestItem": "Exams",
  "notChecked": [
    "dropped lowest scores and category caps",
    "teacher rounding rules",
    "…1 more"
  ],
  "overallPercent": 84,
  "reasons": [],
  "source": "computed locally (sum of weight x score/max, divided by total weight)",
  "summary": "Overall 84% (B) from 2 item(s).",
  "verdict": "COMPUTED",
  "weightsNormalized": false,
  "weightsTotal": 100
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://grades-calc.x402tookit.com/weighted-grade?items=%5B%7B%22name%22%3A%22Homework%22%2C%22score%22%3A90%2C%22max%22%3A100%2C%22weight%22%3A40%7D%2C%7B%22name%22%3A%22Exams%22%2C%22score%22%3A80%2C%22max%22%3A100%2C%22weight%22%3A60%7D%5D'

# 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 - 'https://grades-calc.x402tookit.com/weighted-grade?items=%5B%7B%22name%22%3A%22Homework%22%2C%22score%22%3A90%2C%22max%22%3A100%2C%22weight%22%3A40%7D%2C%7B%22name%22%3A%22Exams%22%2C%22score%22%3A80%2C%22max%22%3A100%2C%22weight%22%3A60%7D%5D' \
  | 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 $0.02 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.02" });
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 $0.02 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fgrades-calc.x402tookit.com%2Fweighted-grade
const res = await pay("https://grades-calc.x402tookit.com/weighted-grade?items=%5B%7B%22name%22%3A%22Homework%22%2C%22score%22%3A90%2C%22max%22%3A100%2C%22weight%22%3A40%7D%2C%7B%22name%22%3A%22Exams%22%2C%22score%22%3A80%2C%22max%22%3A100%2C%22weight%22%3A60%7D%5D");
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 $0.02 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.02"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://grades-calc.x402tookit.com/weighted-grade?items=%5B%7B%22name%22%3A%22Homework%22%2C%22score%22%3A90%2C%22max%22%3A100%2C%22weight%22%3A40%7D%2C%7B%22name%22%3A%22Exams%22%2C%22score%22%3A80%2C%22max%22%3A100%2C%22weight%22%3A60%7D%5D")
    print(res.status_code, res.text)