Economy Sink Sim

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://gaming.halowerk.com/v1/economy-sink-sim' \
  -H 'content-type: application/json' \
  --data-raw '{"daily_source":30000,"days":14,"sinks":[{"daily_supply_percent":0.2,"fixed_daily_amount":12000,"sink_id":"crafting"},{"daily_supply_percent":0.1,"fixed_daily_amount":5000,"sink_id":"repairs"}],"source_daily_growth_percent":0,"starting_supply":1000000}'

# 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://gaming.halowerk.com/v1/economy-sink-sim' \
  -H 'content-type: application/json' \
  --data-raw '{"daily_source":30000,"days":14,"sinks":[{"daily_supply_percent":0.2,"fixed_daily_amount":12000,"sink_id":"crafting"},{"daily_supply_percent":0.1,"fixed_daily_amount":5000,"sink_id":"repairs"}],"source_daily_growth_percent":0,"starting_supply":1000000}' \
  | 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 $0.004 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.004" });
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 $0.004 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fgaming.halowerk.com%2Fv1%2Feconomy-sink-sim&method=POST
const res = await pay("https://gaming.halowerk.com/v1/economy-sink-sim", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "daily_source": 30000,
    "days": 14,
    "sinks": [
      {
        "daily_supply_percent": 0.2,
        "fixed_daily_amount": 12000,
        "sink_id": "crafting"
      },
      {
        "daily_supply_percent": 0.1,
        "fixed_daily_amount": 5000,
        "sink_id": "repairs"
      }
    ],
    "source_daily_growth_percent": 0,
    "starting_supply": 1000000
  }),
});
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 $0.004 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.004"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://gaming.halowerk.com/v1/economy-sink-sim",
        json={
            "daily_source": 30000,
            "days": 14,
            "sinks": [
                {
                    "daily_supply_percent": 0.2,
                    "fixed_daily_amount": 12000,
                    "sink_id": "crafting",
                },
                {
                    "daily_supply_percent": 0.1,
                    "fixed_daily_amount": 5000,
                    "sink_id": "repairs",
                },
            ],
            "source_daily_growth_percent": 0,
            "starting_supply": 1000000,
        },
    )
    print(res.status_code, res.text)