The crumburl package facilitate this type of thing:

import { payment } from "crumburl";

const GET = (request: Request, env: Env) => {
  const { transactionId, ok, location } = await payment(request, {
    amount: 0.001,
    address: process.env.CRUMBLE_ADDRESS,
    description: "AI Agent Usage",
  });

  if (!ok) {
    return new Response(
      "Redirecting to deposit with correct retry redirection after deposit.",
      { headers: { location } },
    );
  }
};