Invoice Pdf

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://paidpilot-invoice-api.dario-9fa.workers.dev/v1/invoice.pdf' \
  -H 'content-type: application/json' \
  --data-raw '{"buyer":{"address":"45 Dodge St, Omaha, NE 68102","name":"Blue River Bakery"},"currency":"USD","due_date":"2026-11-08","invoice_number":"INV-1001","issue_date":"2026-10-09","line_items":[{"description":"Website redesign (fixed fee)","quantity":1,"unit_price":1200},{"description":"Hosting, October","quantity":1,"unit_price":25},{"description":"Support hours","quantity":3.5,"unit_price":80}],"notes":"Thank you for your business.","payment_instructions":"ACH to account ending 1234 within 30 days.","seller":{"address":"123 Main St, Omaha, NE 68102","email":"[email protected]","name":"Acme Web Studio LLC"},"tax_rate":7}'

# 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://paidpilot-invoice-api.dario-9fa.workers.dev/v1/invoice.pdf' \
  -H 'content-type: application/json' \
  --data-raw '{"buyer":{"address":"45 Dodge St, Omaha, NE 68102","name":"Blue River Bakery"},"currency":"USD","due_date":"2026-11-08","invoice_number":"INV-1001","issue_date":"2026-10-09","line_items":[{"description":"Website redesign (fixed fee)","quantity":1,"unit_price":1200},{"description":"Hosting, October","quantity":1,"unit_price":25},{"description":"Support hours","quantity":3.5,"unit_price":80}],"notes":"Thank you for your business.","payment_instructions":"ACH to account ending 1234 within 30 days.","seller":{"address":"123 Main St, Omaha, NE 68102","email":"[email protected]","name":"Acme Web Studio LLC"},"tax_rate":7}' \
  | 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 $0.02 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.02" });
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 $0.02 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fpaidpilot-invoice-api.dario-9fa.workers.dev%2Fv1%2Finvoice.pdf&method=POST
const res = await pay("https://paidpilot-invoice-api.dario-9fa.workers.dev/v1/invoice.pdf", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "buyer": {
      "address": "45 Dodge St, Omaha, NE 68102",
      "name": "Blue River Bakery"
    },
    "currency": "USD",
    "due_date": "2026-11-08",
    "invoice_number": "INV-1001",
    "issue_date": "2026-10-09",
    "line_items": [
      {
        "description": "Website redesign (fixed fee)",
        "quantity": 1,
        "unit_price": 1200
      },
      {
        "description": "Hosting, October",
        "quantity": 1,
        "unit_price": 25
      },
      {
        "description": "Support hours",
        "quantity": 3.5,
        "unit_price": 80
      }
    ],
    "notes": "Thank you for your business.",
    "payment_instructions": "ACH to account ending 1234 within 30 days.",
    "seller": {
      "address": "123 Main St, Omaha, NE 68102",
      "email": "[email protected]",
      "name": "Acme Web Studio LLC"
    },
    "tax_rate": 7
  }),
});
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 $0.02 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.02"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://paidpilot-invoice-api.dario-9fa.workers.dev/v1/invoice.pdf",
        json={
            "buyer": {
                "address": "45 Dodge St, Omaha, NE 68102",
                "name": "Blue River Bakery",
            },
            "currency": "USD",
            "due_date": "2026-11-08",
            "invoice_number": "INV-1001",
            "issue_date": "2026-10-09",
            "line_items": [
                {
                    "description": "Website redesign (fixed fee)",
                    "quantity": 1,
                    "unit_price": 1200,
                },
                {
                    "description": "Hosting, October",
                    "quantity": 1,
                    "unit_price": 25,
                },
                {
                    "description": "Support hours",
                    "quantity": 3.5,
                    "unit_price": 80,
                },
            ],
            "notes": "Thank you for your business.",
            "payment_instructions": "ACH to account ending 1234 within 30 days.",
            "seller": {
                "address": "123 Main St, Omaha, NE 68102",
                "email": "[email protected]",
                "name": "Acme Web Studio LLC",
            },
            "tax_rate": 7,
        },
    )
    print(res.status_code, res.text)