Anthropic Reference Architecture

Overview

Three validated architecture patterns for Claude API integrations: synchronous API gateway, async queue-based processing, and multi-model routing.

Architecture 1: Sync API Gateway (Simple)

User → API Gateway → Claude Service → Messages API
                                     ↓
                                   Response → User

# Best for: chatbots, interactive tools, low-volume (<100 RPM)
from fastapi import FastAPI
import anthropic