Wallet Automation

import { privateKeyToAccount } from 'viem/accounts';
import { createWalletClient, http } from 'viem';
import { mainnet } from 'viem/chains';

const API = 'https://api.0xarchive.io/v1';
const account = privateKeyToAccount(process.env.PRIVATE_KEY as `0x${string}`);

// Step 1: Get SIWE challenge
const { message, nonce } = await fetch(`${API}/auth/web3/challenge`, {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({ address: account.address }),
}).then(r => r.json());

// Step 2: Sign and submit
const signature = await account.signMessage({ message });
const { api_key, tier } = await fetch(`${API}/web3/signup`, {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({ message, signature }),
}).then(r => r.json());

console.log(`API key: ${api_key} (tier: ${tier})`);

from eth_account import Account
from eth_account.messages import encode_defunct
import requests, os

API = "https://api.0xarchive.io/v1"
account = Account.from_key(os.environ["PRIVATE_KEY"])

# Step 1: Get SIWE challenge
resp = requests.post(f"{API}/auth/web3/challenge",
    json={"address": account.address})
data = resp.json()

# Step 2: Sign and submit
sig = account.sign_message(
    encode_defunct(text=data["message"]))
resp = requests.post(f"{API}/web3/signup",
    json={"message": data["message"],
           "signature": sig.signature.hex()})
result = resp.json()
print(f"API key: {result['api_key']} (tier: {result['tier']})")

# Step 1: Request pricing (returns 402)
resp = requests.post(f"{API}/web3/subscribe",
    json={"tier": "build"})
# resp.status_code == 402
payment_info = resp.json()["payment"]
# { amount: "49000000", asset: "USDC", network: "eip155:8453",
#   pay_to: "0x...", asset_address: "0x8335..." }

# Step 2: Sign EIP-3009 transferWithAuthorization
# (see x402 spec for full signing flow)
# Then retry with payment header:
resp = requests.post(f"{API}/web3/subscribe",
    headers={"payment-signature": base64_payment},
    json={"tier": "build"})
result = resp.json()
# { api_key: "0xa_live_...", tier: "build",
#   expires_at: "2026-04-06T...", tx_hash: "0x..." }