Authoritative reference for how Claude Code itself works AND how to build for it — CLAUDE.md memory, custom slash commands, subagents, skills, hooks, MCP servers, settings precedence, permissions, plan mode, CLI/headless/CI, worktrees, and multi-platform surfaces. Use when authoring or debugging a plugin component (command/agent/skill/hook), wiring an MCP server, choosing frontmatter fields, configuring settings.json or permissions, figuring out why an agent/skill won't auto-trigger, running headless/CI or worktree-parallel sessions, or answering "how does Claude Code X work / how should I structure this for Claude Code."
$npx -y skills add nxtg-ai/forge-plugin --skill claude-code-frameworkInstalls into the current project.
Run `npx skills use "https://github.com/nxtg-ai/forge-plugin" --skill "nxtg-ai/forge-plugin/claude-code-framework"` and follow the generated skill instructions now. Read its complete output, redirecting it to a temporary file first if necessary. Resolve relative paths from the supporting-files directory it provides.
Use the skills in "https://github.com/nxtg-ai/forge-plugin" that are relevant to the current task. Run `npx skills add "https://github.com/nxtg-ai/forge-plugin"` and select the relevant skills, then follow their instructions.