---

name: replit-reference-architecture description: | Implement Replit reference architecture with best-practice project layout. Use when designing new Replit integrations, reviewing project structure, or establishing architecture standards for Replit applications. Trigger with phrases like "replit architecture", "replit best practices", "replit project structure", "how to organize replit", "replit layout". allowed-tools: Read, Grep version: 1.0.0 license: MIT author: Jeremy Longshore jeremy@intentsolutions.io

Replit Reference Architecture

Overview

Production-ready architecture patterns for Replit integrations.

Prerequisites

• Understanding of layered architecture
• Replit SDK knowledge
• TypeScript project setup
• Testing framework configured

Project Structure

Copymy-replit-project/
├── src/
│   ├── replit/
│   │   ├── client.ts           # Singleton client wrapper
│   │   ├── config.ts           # Environment configuration
│   │   ├── types.ts            # TypeScript types
│   │   ├── errors.ts           # Custom error classes
│   │   └── handlers/
│   │       ├── webhooks.ts     # Webhook handlers
│   │       └── events.ts       # Event processing
│   ├── services/
│   │   └── replit/
│   │       ├── index.ts        # Service facade
│   │       ├── sync.ts         # Data synchronization
│   │       └── cache.ts        # Caching layer
│   ├── api/
│   │   └── replit/
│   │       └── webhook.ts      # Webhook endpoint
│   └── jobs/
│       └── replit/
│           └── sync.ts         # Background sync job
├── tests/
│   ├── unit/
│   │   └── replit/
│   └── integration/
│       └── replit/
├── config/
│   ├── replit.development.json
│   ├── replit.staging.json
│   └── replit.production.json
└── docs/
    └── replit/
        ├── SETUP.md
        └── RUNBOOK.md

Layer Architecture

Copy┌─────────────────────────────────────────┐
│             API Layer                    │
│   (Controllers, Routes, Webhooks)        │
├─────────────────────────────────────────┤
│           Service Layer                  │
│  (Business Logic, Orchestration)         │
├─────────────────────────────────────────┤
│          Replit Layer        │
│   (Client, Types, Error Handling)        │
├─────────────────────────────────────────┤
│         Infrastructure Layer             │
│    (Cache, Queue, Monitoring)            │
└─────────────────────────────────────────┘

Key Components

Step 1: Client Wrapper

Copy// src/replit/client.ts
export class ReplitService {
  private client: ReplitClient;
  private cache: Cache;
  private monitor: Monitor;

  constructor(config: ReplitConfig) {
    this.client = new ReplitClient(config);
    this.cache = new Cache(config.cacheOptions);
    this.monitor = new Monitor('replit');
  }

  async get(id: string): Promise<Resource> {
    return this.cache.getOrFetch(id, () =>
      this.monitor.track('get', () => this.client.get(id))
    );
  }
}

Step 2: Error Boundary

Copy// src/replit/errors.ts
export class ReplitServiceError extends Error {
  constructor(
    message: string,
    public readonly code: string,
    public readonly retryable: boolean,
    public readonly originalError?: Error
  ) {
    super(message);
    this.name = 'ReplitServiceError';
  }
}

export function wrapReplitError(error: unknown): ReplitServiceError {
  // Transform SDK errors to application errors
}

Step 3: Health Check

Copy// src/replit/health.ts
export async function checkReplitHealth(): Promise<HealthStatus> {
  try {
    const start = Date.now();
    await replitClient.ping();
    return {
      status: 'healthy',
      latencyMs: Date.now() - start,
    };
  } catch (error) {
    return { status: 'unhealthy', error: error.message };
  }
}

Data Flow Diagram

CopyUser Request
     │
     ▼
┌─────────────┐
│   API       │
│   Gateway   │
└──────┬──────┘
       │
       ▼
┌─────────────┐    ┌─────────────┐
│   Service   │───▶│   Cache     │
│   Layer     │    │   (Redis)   │
└──────┬──────┘    └─────────────┘
       │
       ▼
┌─────────────┐
│ Replit    │
│   Client    │
└──────┬──────┘
       │
       ▼
┌─────────────┐
│ Replit    │
│   API       │
└─────────────┘

Configuration Management

Copy// config/replit.ts
export interface ReplitConfig {
  apiKey: string;
  environment: 'development' | 'staging' | 'production';
  timeout: number;
  retries: number;
  cache: {
    enabled: boolean;
    ttlSeconds: number;
  };
}

export function loadReplitConfig(): ReplitConfig {
  const env = process.env.NODE_ENV || 'development';
  return require(`./replit.${env}.json`);
}

Instructions

Step 1: Create Directory Structure

Set up the project layout following the reference structure above.

Step 2: Implement Client Wrapper

Create the singleton client with caching and monitoring.

Step 3: Add Error Handling

Implement custom error classes for Replit operations.

Step 4: Configure Health Checks

Add health check endpoint for Replit connectivity.

Output

• Structured project layout
• Client wrapper with caching
• Error boundary implemented
• Health checks configured

Error Handling

Examples

Quick Setup Script

Copy# Create reference structure
mkdir -p src/replit/{handlers} src/services/replit src/api/replit
touch src/replit/{client,config,types,errors}.ts
touch src/services/replit/{index,sync,cache}.ts

Resources

• Replit SDK Documentation
• Replit Best Practices

Flagship Skills

For multi-environment setup, see replit-multi-env-setup.