Claude Agent SDK: The Hidden Go Binary Powering Your AI Workflows

Silver Bullet or Ball and Chain? The Claude Agent SDK Architecture After You Peek Into node_modules What really happens when you install the Claude Agent SDK? You get a thin TypeScript wrapper around a 190 MB Go binary that is the actual agent runtime—this article unpacks what that means for your project, wallet, and freedom to choose models. 1. The Two-Line Install That Pulls 190 MB of Go Core question: Why does a simple npm install suddenly drop a CLI tool written in Go into my laptop? Official docs tell you to run: npm install -g @anthropic-ai/claude-code # 190 MB …