Claude API Implementation Guide

About

This skill provides comprehensive guidance for developers building on the Claude Messages API, specifically focusing on modern features introduced in SDK v0.69.0 and beyond. It offers production-ready implementation patterns for guaranteed JSON schema conformance through structured outputs, significant cost reduction strategies using ephemeral prompt caching, and resilient tool-use configurations. By addressing 16 common pitfalls—including mid-stream SSE parsing errors, Unicode edge cases in tool results, and model deprecation migrations—it ensures your AI applications remain efficient and compatible with the latest Claude 4.x frontier models.

Key Features

• 90% Cost Reduction Patterns with Prompt Caching
• 0 GitHub stars
• Resilient Streaming SSE Error Management
• Guaranteed JSON Schema Validation via Structured Outputs
• Strict Tool Use & Function Calling Implementation
• Automated Model Deprecation & Migration Roadmap

Use Cases

• Optimizing high-token applications to reduce API costs via context caching
• Building production-grade agents requiring validated JSON data extraction
• Troubleshooting complex rate limit errors and tool execution failures