Is the Claude Code Mastery skill free?

Yes. The skill itself is free from ToruAI/toru-claude-agents. SkillProof publishes the install command and an independent test verdict at no cost.

What is the Claude Code Mastery SkillProof Score?

7.2/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 5/10, docs & honesty 3/5.

How do I install Claude Code Mastery?

Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.

Can I use Claude Code Mastery with Cursor, Copilot, Gemini CLI, Codex or other AI tools?

The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.

Claude Code Mastery

Condensed cheat-sheet on Claude Code subagents, skills, hooks, and MCP for improving your own workflow.

by ToruAI · ToruAI/toru-claude-agents

Works with setup

Install — copy the command Download source ↗

Test report

Verdict: Works with setup
Score: 7.2/10
Tested: Jul 15, 2026
Environment: Claude Code 2.x (agent harness)
Upstream re-checked: Aug 10, 2026 · 4f9591b

Useful condensed Claude Code reference, but two of its concrete recipes point outside the skill: docs at ~/.claude/docs/claude-code/ aren't included when you copy just this skill folder, and its 'Lost Knowledge' fix tells you to call megg_remember, a proprietary MCP from the author's own stack that this skill file never explains how to obtain.

Scored on four weighted criteria — install, triggering, output vs. baseline, docs. How scoring works

Installs cleanly 5/5
Triggers reliably 5/5
Output vs. baseline 5/10
Docs & honesty 3/5

What Claude Code Mastery does

A reference skill summarizing subagent/skill/hook/MCP file structure and frontmatter fields, plus four 'improvement patterns' (repeated context, manual validation, unclear delegation, lost knowledge) with recipes. Meant to trigger when optimizing workflows or building automation. Two of its recipes point outside the skill folder: a full Claude Code docs mirror at ~/.claude/docs/claude-code/ that isn't included when the skill is copied alone, and a 'megg_remember' call that depends on the author's own proprietary megg MCP memory system (github.com/toruai/megg, Node.js 20+), which is disclosed in the parent repo's README but not in the SKILL.md itself.

How to install Claude Code Mastery

git clone https://github.com/ToruAI/toru-claude-agents
mkdir -p ~/.claude/skills
cp -r toru-claude-agents/skills/claude-code-mastery ~/.claude/skills/claude-code-mastery

Skills live in ~/.claude/skills/ (global) or .claude/skills/ (per-project). Restart Claude Code after installing.

Commands — how to trigger Claude Code Mastery

/claude-code-mastery Condensed cheat-sheet on Claude Code subagents, skills, hooks, and MCP for improving your own workflow.

It also activates on plain-language prompts like these:

I keep losing context between Claude Code sessions, how do I fix that?
Can you explain how skill frontmatter fields work in Claude Code?
Help me set up a PostToolUse hook to validate my file edits

Frequently asked questions

Is the Claude Code Mastery skill free?: Yes. The skill itself is free from ToruAI/toru-claude-agents. SkillProof publishes the install command and an independent test verdict at no cost.
Does Claude Code Mastery work with Claude Code?: We tested it with Claude Code 2.x (agent harness) on Jul 15, 2026. Verdict: Works with setup. Useful condensed Claude Code reference, but two of its concrete recipes point outside the skill: docs at ~/.claude/docs/claude-code/ aren't included when you copy just this skill folder, and its 'Lost Knowledge' fix tells you to call megg_remember, a proprietary MCP from the author's own stack that this skill file never explains how to obtain.
What is the Claude Code Mastery SkillProof Score?: 7.2/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 5/10, docs & honesty 3/5.
How do I install Claude Code Mastery?: Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.
Can I use Claude Code Mastery with Cursor, Copilot, Gemini CLI, Codex or other AI tools?: The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.