Gpa

{
  "asOf": "2026-10-12T01:53:41.747Z",
  "courses": [
    {
      "credits": 3,
      "grade": "A",
      "level": "regular",
      "points": 4,
      "qualityPoints": 12
    },
    {
      "credits": 4,
      "grade": "B+",
      "level": "regular",
      "points": 3.3,
      "qualityPoints": 13.2
    }
  ],
  "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.",
  "gpa": 3.12,
  "gpaToTwoPlaces": 3.12,
  "notChecked": [
    "your school's own scale (some give A+ 4.3, no plus/minus, or different honors bonuses)",
    "repeated-course and pass/fail policies",
    "…1 more"
  ],
  "reasons": [
    "GPA = total quality points / total credits; each course's quality points = grade points x credits."
  ],
  "source": "computed locally (quality points / credits; standard 4.0 plus/minus scale)",
  "summary": "GPA 3.12 on 10 credits (31.2 quality points).",
  "totalCredits": 10,
  "totalQualityPoints": 31.2,
  "unweightedGpa": 3.12,
  "verdict": "COMPUTED",
  "weighted": false
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://grades-calc.x402tookit.com/gpa?courses=%5B%7B%22grade%22%3A%22A%22%2C%22credits%22%3A3%7D%2C%7B%22grade%22%3A%22B%2B%22%2C%22credits%22%3A4%7D%2C%7B%22grade%22%3A%22C%22%2C%22credits%22%3A3%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/gpa?courses=%5B%7B%22grade%22%3A%22A%22%2C%22credits%22%3A3%7D%2C%7B%22grade%22%3A%22B%2B%22%2C%22credits%22%3A4%7D%2C%7B%22grade%22%3A%22C%22%2C%22credits%22%3A3%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%2Fgpa
const res = await pay("https://grades-calc.x402tookit.com/gpa?courses=%5B%7B%22grade%22%3A%22A%22%2C%22credits%22%3A3%7D%2C%7B%22grade%22%3A%22B%2B%22%2C%22credits%22%3A4%7D%2C%7B%22grade%22%3A%22C%22%2C%22credits%22%3A3%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/gpa?courses=%5B%7B%22grade%22%3A%22A%22%2C%22credits%22%3A3%7D%2C%7B%22grade%22%3A%22B%2B%22%2C%22credits%22%3A4%7D%2C%7B%22grade%22%3A%22C%22%2C%22credits%22%3A3%7D%5D")
    print(res.status_code, res.text)