Prompt Caching Skill Leverage Anthropic's prompt caching to dramatically reduce latency and costs for repeated prompts. When to Use This Skill - RAG systems with large static documents - Multi-turn conversations with long instructions - Code analysis with large codebase context - Batch processing with shared prefixes - Document analysis and summarization Core Concepts Cache Control Placement Cache Hierarchy Cache breakpoints are checked in this order: 1. Tools - Tool definitions cached first 2. System - System prompts cached second 3. Messages - Conversation history cached last TTL Options |…