clade-reliability-patterns

name	clade-reliability-patterns
description	Build fault-tolerant Claude integrations — retries, circuit breakers, Use when working with reliability-patterns patterns. fallbacks, timeouts, and graceful degradation. Trigger with "anthropic reliability", "claude fault tolerance", "anthropic circuit breaker", "claude fallback".
allowed-tools	Read, Write, Edit
version	1.0.0
license	MIT
author	Jeremy Longshore <[e-mail]>
tags	["saas","anthropic","claude","reliability","resilience"]
compatibility	Designed for Claude Code

Anthropic Reliability Patterns

Overview

Build fault-tolerant Claude integrations with built-in SDK retries, model fallback chains (Sonnet → Haiku), circuit breakers to avoid hammering a failing API, graceful degradation with cached/static responses, and per-request timeout configuration.

Built-In SDK Retries

The SDK retries 429 (rate limit) and 529 (overloaded) automatically:

const client = new Anthropic({
  maxRetries: 3, // default: 2
  timeout: 120_000, // 2 minutes
});

Model Fallback Chain

const FALLBACK_CHAIN = ['claude-sonnet-4-20250514', 'claude-haiku-4-5-20251001'];

async function callWithFallback(params: Anthropic.MessageCreateParams) {
  for (const model of FALLBACK_CHAIN) {
    try {
      return await client.messages.create({ ...params, model });
    } catch (err) {
      if (err instanceof Anthropic.APIError && err.status >= 500) {
        console.warn(`${model} failed (${err.status}), trying next...`);
        continue;
      }
       err; 
    }
  }
    ();
}