Claude Extensibility

Quality score: 70/100 · Category: Dev Tools · Sub-category: cli-builders

ai:claudetype:cli

Claude Code extensibility: agents, skills, output styles. Capabilities: create/update/delete agents and skills, YAML frontmatter, system prompts, tool/model selection, resumable agents, CLI-defined agents. Actions: create, edit, delete, optimize, test extensions. Keywords: agent, skill, output-style, SKILL.md, subagent, Task tool, progressive disclosure. Use when: creating agents/skills, editing extensions, configuring tool access, choosing models, testing activation.

What this skill does

Claude Extensibility is a production-ready Claude Code skill (quality score 70/100) in the cli-builders sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/claude-extensibility/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when: creating agents/skills, editing extensions, configuring tool access, choosing models, testing activation.

Who uses this skill

The Claude Extensibility skill is built for developers, power users, and teams automating repetitive workflows and improving developer experience. It is part of the open ClaudSkills registry, a community-curated catalog of 15,000+ capabilities you can install for Claude Code — the Claude CLI agent.

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/claude-extensibility
curl -L https://claudskills.com/skills/claude-extensibility/SKILL.md \
  -o ~/.claude/skills/claude-extensibility/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/claude-extensibility/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/claude-extensibility/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\claude-extensibility\SKILL.md on Windows. See the full install guide for step-by-step instructions.

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

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Part of ClaudSkills — the open registry for Claude Code skills. · What's New · Install guide · About · llms.txt

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