Anthropic SDK Overview The Anthropic SDK provides access to Claude models (Opus, Sonnet, Haiku) for text generation, analysis, coding, and reasoning. Claude excels at long-context understanding (200K tokens), careful instruction following, code generation, and complex reasoning. This skill covers the Messages API, streaming, tool use (function calling), vision, extended thinking, system prompts, and best practices for prompt engineering with Claude. Instructions Step 1: Installation Step 2: Messages API Step 3: Streaming Step 4: Tool Use (Function Calling) Step 5: Vision Step 6: Extended Thin…