boundary-guard-x402.onrender.com · workflow-audit

Audit a multi-step agent workflow for risk, declared spend, missing receipts, and policy evidence before it runs.

Call it in 30 seconds

// npm i x402-fetch viem
import { wrapFetchWithPayment } from "x402-fetch";
import { createWalletClient, http } from "viem";
import { privateKeyToAccount } from "viem/accounts";
import { base } from "viem/chains";

const account = privateKeyToAccount(process.env.PRIVATE_KEY); // funds USDC on Base
const wallet = createWalletClient({ account, chain: base, transport: http() });
const fetchWithPay = wrapFetchWithPayment(fetch, wallet);

// Pays the $0.03 USDC automatically on the 402, then returns the real response:
const res = await fetchWithPay("https://boundary-guard-x402.onrender.com/workflow-audit", { method: "POST" });
console.log(await res.json());

# pip install x402 eth-account httpx
import os, asyncio
from eth_account import Account
from x402.clients.httpx import x402HttpxClient

account = Account.from_key(os.environ["PRIVATE_KEY"])  # funds USDC on Base

async def main():
    async with x402HttpxClient(account=account) as client:
        # x402 handles the 402 -> pay ($0.03 USDC) -> retry automatically
        r = await client.get("https://boundary-guard-x402.onrender.com/workflow-audit")
        print((await r.aread()).decode())

asyncio.run(main())

# 1) An unpaid request returns HTTP 402 with the exact payment terms:
curl -i -X POST "https://boundary-guard-x402.onrender.com/workflow-audit" \
  -H 'content-type: application/json' \
  -d '{"objective": "Research, enrich, and prepare a paid supplier checkout without broadcasting funds.", "policy": {"max_total_payment_usdc": "25.00", "require_receipts_for_paid_steps": true}, "steps": [{"action": "Search supplier data and summarize options.", "actor": "agent:researcher", "payload": {"query": "replacement part supplier"}, "receipt_id": "risk_abc123", "step_id": "research", "target": "https://api.example.com/search"}, {"action": "Prepare x402 payment request; do not broadcast.", "actor": "agent:wallet-operator", "payment": {"amount_usdc": "18.50", "asset": "USDC", "network": "base"}, "receipt_id": "hnd_abc123", "step_id": "payment-prep", "target": "https://supplier.example/checkout"}], "workflow_id": "wf_checkout_1042"}'

# 2) Paying + retrying requires an x402 client that can sign the USDC
#    authorization (curl alone cannot). See the JS / Python tabs below.

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