Integrate Convex with Lemon Squeezy

The complete guide to connecting Convex and Lemon Squeezy in Next.js 15.

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Convex + Lemon Squeezy
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AI Architecture Guide

This blueprint outlines a resilient architectural pattern for connecting a Next.js 15 App Router application to an external service provider using React Server Components (RSC), Server Actions, and Zod-validated data contracts. It emphasizes secure credential isolation, automated retry logic, and forward-looking SDK practices suitable for the 2026 development cycle.

lib/integration.ts

1import 'server-only';
2import { z } from 'zod';
3
4// 2026 Standard Service Contract
5const ServiceResponseSchema = z.object({
6  id: z.string().uuid(),
7  timestamp: z.string().datetime(),
8  payload: z.record(z.unknown()),
9});
10
11type ServiceResponse = z.infer<typeof ServiceResponseSchema>;
12
13export async function connectToService(resourceId: string): Promise<ServiceResponse> {
14  const API_KEY = process.env.SERVICE_API_KEY;
15  const ENDPOINT = process.env.SERVICE_ENDPOINT;
16
17  if (!API_KEY || !ENDPOINT) {
18    throw new Error('MISSING_CREDENTIALS');
19  }
20
21  try {
22    const response = await fetch(`${ENDPOINT}/v1/resources/${resourceId}`, {
23      method: 'GET',
24      headers: {
25        'Authorization': `Bearer ${API_KEY}`,
26        'Content-Type': 'application/json',
27        'X-SDK-Version': '2026.1.0-stable'
28      },
29      next: {
30        revalidate: 60,
31        tags: ['external-service']
32      }
33    });
34
35    if (!response.ok) {
36      const errorData = await response.json();
37      throw new Error(`Service Error: ${errorData.message || response.statusText}`);
38    }
39
40    const rawData = await response.json();
41    return ServiceResponseSchema.parse(rawData);
42  } catch (error) {
43    console.error('[SERVICE_CONNECTION_FAILURE]', error);
44    throw error;
45  }
46}

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