Guide library
$ claude
Claude Code Documentation
Installation, authentication, settings.json, CLAUDE.md, Plan mode, permissions, MCP, Hooks, Skills, Subagents, context costs, and troubleshooting.
DOCUMENTATION
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Each topic states its scope, operating steps, sources, and validation method.
01Install Claude Code on macOS, Linux, Windows, and WSLInstall Claude Code through a supported channel and verify the local CLI state before project use.9 min02First Task with Claude Code: Inspect, Change, and VerifyEstablish a repeatable inspection, implementation, verification, and review procedure for a first Claude Code task.10 min03Common Claude Code Commands: Interactive Sessions, Recovery, Scripts, and Structured OutputLocate reproducible Claude Code commands without confusing interactive commands with shell commands.11 min04Claude Code Authentication Guide: Accounts, API Keys, and LLM GatewaysHelp users choose the correct Claude Code authentication method and complete verifiable security configuration.12 min05Claude Code settings.json: Scope, Precedence, and DebuggingDefine a reviewable and debuggable configuration procedure for Claude Code.11 min06Claude Code Models and LLM Gateways: Configuration and CompatibilityConfigure model routing and distinguish a successful request from full protocol compatibility.15 min07CLAUDE.md in Claude Code: Scope and Project RulesHelp teams write concise, actionable, and verifiable persistent instructions for Claude Code.12 min08Claude Code Prompting and Plan Mode: From Requirements to a Verification LoopHelp developers build reusable Claude Code prompting and planning practices.12 min09Claude Code Permissions and Security: Approval Modes, Rules, and SandboxingHelp developers reduce unnecessary approval prompts without compromising code, credential, or infrastructure security.14 min10Claude Code MCP: Tool Connections, Scope, Authentication, and SecurityHelp users start with a minimal MCP connection and expand it through an auditable process.13 min11Claude Code Hooks: Formatting, Validation, and Security BlocksHelp teams securely integrate repetitive validation and policy enforcement into the Claude Code lifecycle.14 min12Claude Code Skills and Subagents: Reusable Workflows and Isolated ContextsHelp teams turn proven practices into maintainable extensions while controlling context and permissions.14 min13Claude Code Context, Sessions, and Cost Optimization GuideHelp users maintain quality, recoverability, and predictable token consumption during long tasks.15 min14Claude Code Troubleshooting: Installation, Authentication, Configuration, Gateways, and PerformanceProvide safe, repeatable diagnostic sequences for common Claude Code failures.14 min
