# From https://agent-guide.moneytools.workers.dev/guides/ (MIT). Disclosure: that site contains referral links and
# MoneyTools earns commission through them; MoneyTools also operates x402 Pay-Precheck and earns from its paid calls.
# Not investment, financial or legal advice. Region restrictions apply (e.g. United States). Read-only: no keys, no payments.
import json, urllib.parse, urllib.request

UA = {"User-Agent": "my-agent/1.0 (+https://example.org/contact)"}  # default Python-urllib UA gets HTTP 403

# Free demo (10 calls/hour/IP). In production call /v1/precheck ($0.005 via x402).
PRECHECK = "https://x402-pay-precheck.moneytools.workers.dev/demo/precheck"

def precheck(target_url):
    q = urllib.parse.urlencode({"url": target_url})
    with urllib.request.urlopen(urllib.request.Request(f"{PRECHECK}?{q}", headers=UA), timeout=30) as r:
        return json.load(r)

def should_pay(target_url, max_usd, allow_warn=False):
    """Return (decision, report). Read-only: no keys, no payment."""
    r = precheck(target_url)
    if r["verdict"] == "ok" or (allow_warn and r["verdict"] == "warn"):
        options = [o for o in r["options"]
                   if o["valid"] and not o["sanctions"]["hit"]
                   and float(o["amountUsd"]) <= max_usd]
        return bool(options), {"verdict": r["verdict"], "options": options,
                               "warnings": r["warnings"]}
    return False, {"verdict": r["verdict"], "summary": r["summary"],
                   "reasons": r["reasons"]}

if __name__ == "__main__":
    import sys
    ok, report = should_pay(sys.argv[1], max_usd=float(sys.argv[2]))
    print("PAY" if ok else "DO NOT PAY", json.dumps(report, indent=2)[:800])