"""Reference agent: a safety-gated action using x402lab.

Before an AI agent swaps/buys a token, it pays x402lab 0.005 USDC for a rug/scam-risk verdict
and refuses to proceed on 'avoid'. Copy this "check before you act" pattern into any agent,
tool, or trading bot.

    pip install "x402[httpx]" eth_account
    export EVM_PRIVATE_KEY=0x...      # a burner wallet with a little USDC on Base (gasless)
    python agent_example.py base 0xTOKEN_ADDRESS

Fetch the latest copy any time:  curl https://api.htsapp.tech/examples/agent.py
"""
import asyncio
import os
import sys

from eth_account import Account
from x402 import x402Client
from x402.http.clients import x402HttpxClient
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

API = "https://api.htsapp.tech"


async def main():
    chain = sys.argv[1] if len(sys.argv) > 1 else "base"
    token = sys.argv[2] if len(sys.argv) > 2 else "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"

    client = x402Client()
    register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

    async with x402HttpxClient(client) as http:
        report = (await http.get(f"{API}/v1/token/{chain}/{token}")).json()

    verdict = report.get("verdict")
    print(f"{token}  →  {verdict.upper()}: {report.get('summary')}")

    # ---- the agent's decision gate ----
    if verdict in ("avoid", "caution"):
        print("⛔  Aborting — the agent does NOT interact with this token.")
        return
    print("✅  Safe to proceed — put your buy/swap/approve logic here.")


if __name__ == "__main__":
    asyncio.run(main())