Everything you need to start building with Claude
New to Claude? Start here. Learn what Claude is and how to begin.
Master the CLI tool that's changing how developers build software.
Agentic patterns, plan mode, git worktrees, and production strategies.
Free structured courses from Anthropic — from API basics to advanced tool use.
Complete API reference — authentication, models, streaming, tool use, and code examples.
Deploy Claude to production — error handling, rate limits, cost optimization, and security.
A comprehensive directory of resources, tools, and communities.