Claude Prompt Caching Implementation Kit for Python and TypeScript

Prompt caching is the single biggest cost lever for Claude API users, yet most developers skip it because the implementation is non-trivial. This kit gives you production-ready caching code that you can drop into any Python or TypeScript project and start saving immediately. Based on real-world usage patterns that reduced monthly API costs from $4,500 to under $500.

What You Get

• basic_caching.py — Drop-in caching wrapper for any Claude API call with automatic cache key generation and hit-rate tracking
• multi_turn_caching.py — Conversational agent caching that preserves context across turns while minimizing repeated token charges
• rag_caching.py — RAG pipeline integration that caches document embeddings and retrieval context, saving up to $4,000/month on document-heavy workloads
• basicCaching.ts — TypeScript equivalent with full type safety for Node.js and Deno projects
• ttl_calculator.sh — Interactive script to calculate optimal cache TTL (5-minute vs 1-hour) for your specific workload patterns
• README with math — Detailed cost breakdowns showing exactly how much you save per scenario

How to Install

1. Install the Anthropic SDK: pip install anthropic>=0.25.0 (Python) or npm install @anthropic-ai/sdk (TypeScript)
2. Copy the relevant caching module into your project
3. Replace your direct API calls with the cached versions
4. Run the TTL calculator to find your optimal cache duration
5. Monitor your cache hit rate using the built-in tracking

The Math That Matters

Cache reads cost 90% less than fresh input tokens. A support bot processing 1,000 queries/day against a 50K-token knowledge base drops from $4,545/month to $500/month. A coding agent running 50-turn sessions drops from $50-100/session to $10-19/session. The cache breaks even after just 2 requests with the same prefix.

Who This Is For

• Backend developers building Claude-powered APIs who want to slash token costs
• Teams running RAG pipelines with large document contexts
• Anyone building conversational agents or chatbots with Claude
• Developers who want production caching code without building it from scratch

Part of our token optimization series at WOWHOW. See the complete Claude Code collection or try our free developer tools.