How do I monetize a VS Code extension?

{
  "pricing": "Trial"
}

// backend: server.js (Node + Express)
import express from 'express';
import { AgentaOS, WebhookVerificationError } from '@agentaos/pay';

const agentaos = new AgentaOS(process.env.AGENTAOS_API_KEY);
const app = express();

// Webhook first, with the raw body: verification fails on parsed JSON.
app.post('/webhooks', express.raw({ type: 'application/json' }), async (req, res) => {
  let event;
  try {
    event = agentaos.webhooks.verify(
      req.body,
      req.headers['x-agentaos-signature'],
      process.env.AGENTAOS_WEBHOOK_SECRET,
    );
  } catch (err) {
    if (err instanceof WebhookVerificationError) return res.sendStatus(400);
    throw err;
  }
  if (event.type === 'checkout.session.completed') {
    const userId = event.data.metadata.customerId;
    if (userId) await db.users.update(userId, { plan: 'pro' });
  }
  // also handle subscription.updated / subscription.canceled to move users back to free
  res.sendStatus(200);
});

app.use(express.json());

app.post('/upgrade', requireUser, async (req, res) => {
  const checkout = await agentaos.checkouts.create({
    linkId: process.env.PRO_PLAN_LINK_ID,
    buyerEmail: req.user.email,
    metadata: { customerId: req.user.id },
    successUrl: 'https://your-extension.com/thanks',
    cancelUrl: 'https://your-extension.com/pricing',
  });
  res.json({ url: checkout.checkoutUrl });
});

app.get('/me', requireUser, async (req, res) => {
  res.json({ plan: (await db.users.get(req.user.id)).plan });
});

• You need offline license keys.AgentaOS does not issue license keys. It sends a webhook, and your backend stores who paid. If the extension must validate a key with no connection, use a licensing tool.
• You build an extension for one client.Our acceptable use policy rules out “custom or project-based work whose scope or deliverable is agreed separately with each client”. Sell the same extension to every buyer.
• You expect the Marketplace to take payment.It will not: the agreement says fees are “billed and collected outside of the Marketplace”. You need a pricing page and a small backend, whichever checkout you use.
• You sell a paid fork of someone else’s extension.Check the original license first. Our acceptable use policy excludes anything “that infringes third-party rights”.
• You want sponsorships or tips.Use the Marketplace sponsor link. Our Terms exclude sponsorships and donations.