Vtuber Rigging

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://creator.halowerk.com/v1/vtuber-rigging' \
  -H 'content-type: application/json' \
  --data-raw '{"channels":["jawOpen","eyeBlinkLeft","eyeBlinkRight"],"frames":[{"timestamp_ms":0,"weights":[0.1,0,0]},{"timestamp_ms":33,"weights":[1.2,0.8,0.7]},{"timestamp_ms":66,"weights":[0.7,0.2,0.25]}],"smoothing_alpha":0.4}'

# 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://creator.halowerk.com/v1/vtuber-rigging' \
  -H 'content-type: application/json' \
  --data-raw '{"channels":["jawOpen","eyeBlinkLeft","eyeBlinkRight"],"frames":[{"timestamp_ms":0,"weights":[0.1,0,0]},{"timestamp_ms":33,"weights":[1.2,0.8,0.7]},{"timestamp_ms":66,"weights":[0.7,0.2,0.25]}],"smoothing_alpha":0.4}' \
  | 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%2Fcreator.halowerk.com%2Fv1%2Fvtuber-rigging&method=POST
const res = await pay("https://creator.halowerk.com/v1/vtuber-rigging", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "channels": [
      "jawOpen",
      "eyeBlinkLeft",
      "eyeBlinkRight"
    ],
    "frames": [
      {
        "timestamp_ms": 0,
        "weights": [
          0.1,
          0,
          0
        ]
      },
      {
        "timestamp_ms": 33,
        "weights": [
          1.2,
          0.8,
          0.7
        ]
      },
      {
        "timestamp_ms": 66,
        "weights": [
          0.7,
          0.2,
          0.25
        ]
      }
    ],
    "smoothing_alpha": 0.4
  }),
});
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://creator.halowerk.com/v1/vtuber-rigging",
        json={
            "channels": [
                "jawOpen",
                "eyeBlinkLeft",
                "eyeBlinkRight",
            ],
            "frames": [
                {
                    "timestamp_ms": 0,
                    "weights": [
                        0.1,
                        0,
                        0,
                    ],
                },
                {
                    "timestamp_ms": 33,
                    "weights": [
                        1.2,
                        0.8,
                        0.7,
                    ],
                },
                {
                    "timestamp_ms": 66,
                    "weights": [
                        0.7,
                        0.2,
                        0.25,
                    ],
                },
            ],
            "smoothing_alpha": 0.4,
        },
    )
    print(res.status_code, res.text)