Node Example — self-hosted license server (BYOS)

Quick summary

This Node 22 example demonstrates self-hosted license enforcement—not a full payment service. It verifies entitlements and device proofs before granting a one-time execution capability.

Try the minimal server with a development store, then test invalid, expired, or replayed requests.

A minimal enforcement host with @yetdapay/license-server — the same wire contract the Worker speaks, run inside your own service. Requires Node 22.

import { createLicenseServer, createSqliteStore } from '@yetdapay/license-server';
import { createWorkerConfig } from '@yetdapay/license-server';

const server = createLicenseServer({
  store: createSqliteStore({ file: './.data/license.db' }),
  keys: { load: async () => JSON.parse(process.env.DEVPAY_LICENSE_KEYS) },
  issuer: 'devpay',          // or createWorkerConfig({store, keys}) for iss='devpay-lic'
  entitlementTtlSec: 120,
});

Expose two kinds of routes yourself (the package is a library, not an HTTP server):

// POST /api/license/activate  — body {key, product_id, public_jwk}
const { entitlement, expires_in, features } = await server.activate(body);

// POST /api/premium/convert — gated paid operation
const ctx = await server.authorize(headers, requestTarget, rawBody);
// ctx carries license + feature context; denials throw LicenseError

Framework helpers:

• h3/Nuxt → @yetdapay/license-nuxt (defineLicenseEventHandler).
• Express/Fastify/Workers/node:http → @yetdapay/license-nuxt/core's createLicenseGuard — feed it a 4-field {headers, method, requestTarget, rawBody} descriptor.

Client side, pair with @yetdapay/license-web (activatePath default /api/license/activate already targets this self-hosted shape — no createWorkerConfig needed unless the host is the Worker).

Store adapters

createMemoryStore(seed?) for tests · createSqliteStore({file}) as the reference persistent adapter and the template for a D1/Postgres port (node:sqlite is experimental in Node 22 — port before production).