Claude Code Mastery Squad
ohmyjahh/xquads-squads
Routes a request to one of eight specialist agents covering hooks, skills, subagents, MCP integration and context engineering for Claude Code.
A skill your agent uses when the user asks to "optimize CLAUDE.md", "create a new skill", "write a custom agent", "configure hooks", "manage context window", "set up MCP servers", "scaffold a skill…
Install Claude Code Mastery
$ npx skills add borghei/Claude-Skills --skill claude-code-mastery -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install borghei/Claude-Skills claude-code-mastery --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/borghei/Claude-Skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/engineering/claude-code-mastery .claude/skills/claude-code-mastery && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "claude-code-mastery" agent skill from https://github.com/borghei/Claude-Skills/tree/main/engineering/claude-code-mastery into .claude/skills/claude-code-mastery/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "claude-code-mastery", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/borghei/Claude-Skills/tree/main/engineering/claude-code-masteryType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add borghei/Claude-Skills --skill claude-code-mastery -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install borghei/Claude-Skills claude-code-mastery --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/borghei/Claude-Skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/engineering/claude-code-mastery .agents/skills/claude-code-mastery && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "claude-code-mastery" agent skill from https://github.com/borghei/Claude-Skills/tree/main/engineering/claude-code-mastery into .agents/skills/claude-code-mastery/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "claude-code-mastery", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add borghei/Claude-Skills --skill claude-code-mastery -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install borghei/Claude-Skills claude-code-mastery --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/borghei/Claude-Skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/engineering/claude-code-mastery .cursor/skills/claude-code-mastery && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "claude-code-mastery" agent skill from https://github.com/borghei/Claude-Skills/tree/main/engineering/claude-code-mastery into .cursor/skills/claude-code-mastery/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "claude-code-mastery", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/borghei/Claude-Skills.git --path engineering/claude-code-mastery--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add borghei/Claude-Skills --skill claude-code-mastery -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install borghei/Claude-Skills claude-code-mastery --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/borghei/Claude-Skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/engineering/claude-code-mastery .gemini/skills/claude-code-mastery && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "claude-code-mastery" agent skill from https://github.com/borghei/Claude-Skills/tree/main/engineering/claude-code-mastery into .gemini/skills/claude-code-mastery/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "claude-code-mastery", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install borghei/Claude-Skills claude-code-masteryInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add borghei/Claude-Skills --skill claude-code-mastery -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/borghei/Claude-Skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/engineering/claude-code-mastery .github/skills/claude-code-mastery && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "claude-code-mastery" agent skill from https://github.com/borghei/Claude-Skills/tree/main/engineering/claude-code-mastery into .github/skills/claude-code-mastery/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "claude-code-mastery", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add borghei/Claude-Skills --skill claude-code-mastery -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install borghei/Claude-Skills claude-code-mastery --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/borghei/Claude-Skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/engineering/claude-code-mastery .opencode/skills/claude-code-mastery && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "claude-code-mastery" agent skill from https://github.com/borghei/Claude-Skills/tree/main/engineering/claude-code-mastery into .opencode/skills/claude-code-mastery/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "claude-code-mastery", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
claude-code-mastery- GitHub stars
- 874
- Token cost
- ~1.9k tokens
- SKILL.md length
- 674 words
- Files
- 12 (incl. scripts, references, assets)
- Skills in repo
- 364
- Repo updated
- First seen
- Licence
- MIT
At a glance
A skill your agent uses when the user asks to "optimize CLAUDE.md", "create a new skill", "write a custom agent", "configure hooks", "manage context window", "set up MCP servers", "scaffold a skill…
- The user asks to optimize CLAUDE.md
- SKILL.md covers Core Capabilities, When to Use, Clarify First and Quick Start, plus 4 more sections
- Runs Python scripts from its folder; calls python
- Create a new skill
What it does
Claude Code Mastery is an agent skill from borghei/Claude-Skills. Use when the user asks to "optimize CLAUDE.md", "create a new skill", "write a custom agent", "configure hooks", "manage context window", "set up MCP servers", "scaffold a skill package", "analyze token budget", "create subagents", "configure permissions", "set up worktrees", or "integrate Claude Code with editors". Covers Claude Code CLI mastery, skill authoring, context engineering, hooks automation, subagent creation, and development workflow optimization.
Its SKILL.md is about 1.9k tokens, which your agent loads only when the skill is triggered. The skill folder holds 14 other files, including scripts, reference files and assets (for example `assets/agent-template.md`, `assets/skill-template.md` and `references/hooks-cookbook.md`).
It sits in Agent Workflows, covering Context engineering, Subagents and LLM cost and token optimization. It works with Model Context Protocol. The repository describes itself as: 385 AI skills, 77 expert agents, and 900 stdlib Python tools for every team: engineering, PM, marketing, C-level, compliance, business ops, research, and a LinkedIn toolkit… The licence is MIT.
When your agent uses it
- The user asks to optimize CLAUDE.md
- Create a new skill
- Write a custom agent
- Configure hooks
Example prompts
- “optimize CLAUDE.md”
- “create a new skill”
- “write a custom agent”
- “/claude-code-mastery”
Requirements
- Python 3
What it can do on your machine
Read from SKILL.md and the folder at commit c9a1487. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Ships 3 files in scripts/ (Python), which the agent can run.
Shell commands in SKILL.md call:
python
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Claude Code Mastery loads about 1.9k tokens when it runs, and up to ~19k if it reads all its reference files. Until then it costs about 121 tokens; SKILL.md has 674 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.
SKILL.md
The full file from borghei/Claude-Skills at commit c9a1487, republished under its MIT licence (© borghei). 674 words, ~1,935 tokens.
Download SKILL.mdSave it as
.claude/skills/claude-code-mastery/SKILL.md (or your agent's skills folder). This skill also uses 11 other files; get the full folder from GitHub.- name
- claude-code-mastery
- description
- Use when the user asks to "optimize CLAUDE.md", "create a new skill", "write a custom agent", "configure hooks", "manage context window", "set up MCP servers", "scaffold a skill package", "analyze token budget", "create subagents", "configure permissions", "set up worktrees", or "integrate Claude Code with editors". Covers Claude Code CLI mastery, skill authoring, context engineering, hooks automation, subagent creation, and development workflow optimization.
- license
- MIT
- metadata.version
- 1.1.0
- metadata.author
- borghei
- metadata.category
- engineering
- metadata.domain
- development-tools
- metadata.updated
- 2026-06-17
- metadata.tags
- claude-code, skill-authoring, subagents, hooks
Claude Code Mastery
Expert skill for Claude Code CLI -- CLAUDE.md optimization, skill authoring, subagent creation, hooks automation, and context engineering.
Keywords: claude-code, claude-cli, CLAUDE.md, skill-authoring, subagents, hooks, context-window, token-budget, MCP-servers, worktrees, permission-modes, prompt-engineering, context-engineering, slash-commands
Core Capabilities
- CLAUDE.md optimization — audit, restructure, compress, and hierarchize config files for token efficiency.
- Skill authoring — scaffold and write discoverable skill packages with correct layout and frontmatter.
- Subagent creation — write
.claude/agents/<name>.mdfiles with atoolsallowlist and a Markdown-body system prompt. - Hooks automation — wire
PreToolUse/PostToolUse/Stoplifecycle scripts via.claude/settings.json. - Context engineering — measure and manage the context-window token budget across a codebase.
When to Use
- Authoring, structuring, or optimizing a CLAUDE.md file for any project.
- Scaffolding a new skill package or creating a Claude Code subagent.
- Configuring hooks for automated quality, security, or workflow steps.
- Auditing and reducing context-window consumption.
Clarify First
Before scaffolding or optimizing, confirm these inputs. If any is unknown or vague, ASK — do not assume:
- Which task — scaffold a new skill, optimize a CLAUDE.md, create a subagent, or analyze context budget (selects
skill_scaffolder.pyvsclaudemd_optimizer.pyvscontext_analyzer.py) - Target identity — for a new skill: its name, domain, and one-line description; for optimization: the file or project path (the inputs the scripts require)
- Token budget — the target ceiling (sets
--token-limitand what counts as over-budget)
Stop rule: ask only the 2-3 that most change the output. If the user says "just draft it," proceed and list your assumptions at the top of the artifact.
Quick Start
# Scaffold a new skill package
python scripts/skill_scaffolder.py my-new-skill --domain engineering --description "Brief description"
# Analyze and optimize an existing CLAUDE.md
python scripts/claudemd_optimizer.py path/to/CLAUDE.md
# Estimate context window usage across a project
python scripts/context_analyzer.py /path/to/project
# All tools support JSON output
python scripts/claudemd_optimizer.py CLAUDE.md --jsonTools
| Tool | Purpose | Command |
|---|---|---|
skill_scaffolder.py | Scaffold a new skill package with correct structure + frontmatter | python scripts/skill_scaffolder.py my-skill -d engineering --description "Does X" |
claudemd_optimizer.py | Score a CLAUDE.md for structure, tokens, and redundancy with recommendations | python scripts/claudemd_optimizer.py CLAUDE.md --token-limit 4000 |
context_analyzer.py | Estimate context-window consumption by file category with a budget breakdown | python scripts/context_analyzer.py /path/to/project --max-depth 4 |
All tools support --json. See references/tool-reference.md for full parameter tables and output formats.
References
Load the reference that matches the task — keep this file lean and pull detail on demand:
- references/workflows.md — the five numbered playbooks: optimize a CLAUDE.md, author a skill, create a subagent, configure hooks, and manage the context budget. Read when executing any of those tasks step-by-step.
- references/quick-reference.md — slash commands, permission modes, CLAUDE.md loading order, MCP servers, the troubleshooting table, and success criteria. Read for at-a-glance lookups or when debugging configuration.
- references/tool-reference.md — full parameter tables and output formats for the three Python tools. Read when scripting the tools or interpreting their JSON output.
- references/skill-authoring-guide.md — comprehensive reference for writing effective skills, from YAML frontmatter to structure. Read when authoring a skill in depth.
- references/subagent-patterns.md — guide to creating and using subagents for parallel work and scoped tasks. Read when designing a subagent.
- references/hooks-cookbook.md — practical hook recipes for code quality, security enforcement, and workflow automation. Read when building hooks.
Templates: assets/skill-template.md, assets/agent-template.md
Show full SKILL.md (217 more words)Show less
Scope & Limitations
This skill covers:
- Authoring, structuring, and optimizing CLAUDE.md files for any project
- Scaffolding new skill packages with correct directory layout and frontmatter
- Creating and configuring Claude Code subagents with scoped tool access
- Analyzing and managing context window token budgets across a codebase
This skill does NOT cover:
- Writing application source code or implementing business logic (see senior-fullstack, senior-backend)
- MCP server development or custom transport protocols (see mcp-server-builder)
- Advanced prompt engineering techniques for LLM applications (see senior-prompt-engineer)
- CI/CD pipeline configuration or deployment automation (see senior-devops, ci-cd-pipeline-builder)
Integration Points
| Skill | Integration | Data Flow |
|---|---|---|
| senior-architect | Architecture decisions inform CLAUDE.md structure sections | Architecture diagrams and patterns feed into the Architecture Overview section of CLAUDE.md |
| code-reviewer | Subagent creation for automated code review | Claude Code Mastery creates the agent .md file; Code Reviewer provides the review logic |
| senior-prompt-engineer | Prompt optimization for skill descriptions and agent instructions | Prompt engineering techniques improve YAML frontmatter trigger phrases and agent system prompts (the agent file body) |
| doc-drift-detector | Detects when CLAUDE.md drifts out of sync with the codebase | Context Analyzer output feeds drift detection; drift findings trigger CLAUDE.md optimization |
| context-engine | Advanced context management strategies | Context Analyzer provides token budgets; Context Engine applies compression and prioritization |
| senior-secops | Security hooks and permission mode configuration | SecOps policies define which tools to deny; Claude Code Mastery configures the permission allowlists |
© borghei, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 11 other files (scripts, references, assets) in engineering/claude-code-mastery of borghei/Claude-Skills.
- SKILL.md
- assets/agent-template.md
- assets/skill-template.md
- references/hooks-cookbook.md
- references/quick-reference.md
- references/skill-authoring-guide.md
- references/subagent-patterns.md
- references/tool-reference.md
- references/workflows.md
- scripts/claudemd_optimizer.py
- scripts/context_analyzer.py
- scripts/skill_scaffolder.py
Open the folder on GitHubat commit c9a1487
Compare with similar skills
Claude Code Mastery next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Claude Code Mastery this skillborghei/Claude-Skills | 874 | — | ~1.9k | Automated safety check: Pass | MIT | |
| Claude Code Mastery Squadohmyjahh/xquads-squads | 276 | — | ~1.1k | Automated safety check: Pass | MIT | |
| Context Mode Output Sandboxmksglu/context-mode | 26k | — | ~4.1k | Automated safety check: Pass | Custom licence | |
| Context Mode for Antigravity CLImksglu/context-mode | 26k | — | ~850 | Automated safety check: Pass | Custom licence | |
| Agent Deckasheshgoplani/agent-deck | 1k | — | ~1.7k | Automated safety check: Pass | MIT | |
| Puppetmaster Agent Orchestrationprofessorpalmer/Puppetmaster | 467 | — | ~3.2k | Automated safety check: Pass | MIT |
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Related
Works with
Categories
Questions about Claude Code Mastery
What does Claude Code Mastery do?
A skill your agent uses when the user asks to "optimize CLAUDE.md", "create a new skill", "write a custom agent", "configure hooks", "manage context window", "set up MCP servers", "scaffold a skill…. Claude Code Mastery is an agent skill from borghei/Claude-Skills.md", "create a new skill", "write a custom agent", "configure hooks", "manage context window", "set up MCP servers", "scaffold a skill package", "analyze token budget", "create subagents", "configure permissions", "set up worktrees", or "integrate Claude Code with editors".
When should I use Claude Code Mastery?
Claude Code Mastery fits situations like: the user asks to optimize CLAUDE.md; create a new skill; write a custom agent; configure hooks.
How do I install Claude Code Mastery in Claude Code?
Run `npx skills add borghei/Claude-Skills --skill claude-code-mastery -a claude-code`. Or copy the skill folder (engineering/claude-code-mastery in borghei/Claude-Skills) into .claude/skills/claude-code-mastery in your project. Claude Code loads it when a task matches its description.
How do I install Claude Code Mastery in Codex?
Run `npx skills add borghei/Claude-Skills --skill claude-code-mastery -a codex`. Or copy the skill folder (engineering/claude-code-mastery in borghei/Claude-Skills) into .agents/skills/claude-code-mastery in your project. Codex loads it when a task matches its description.
Can I use Claude Code Mastery in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add borghei/Claude-Skills --skill claude-code-mastery -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/claude-code-mastery, .gemini/skills/claude-code-mastery, .github/skills/claude-code-mastery and .opencode/skills/claude-code-mastery in your project.
What does Claude Code Mastery need to run?
Going by SKILL.md and its folder, Claude Code Mastery needs Python for the scripts in its folder and the command-line tools its instructions call (python). Our summary lists: Python 3.
Does Claude Code Mastery access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Claude Code Mastery safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.
What licence does Claude Code Mastery use?
Claude Code Mastery is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Claude Code Mastery use?
About 1.9k tokens (SKILL.md is roughly 7.7k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 17k tokens, read only when the agent opens those files.
What are the alternatives to Claude Code Mastery?
Skills that share tags, products or a category with Claude Code Mastery: Claude Code Mastery Squad (ohmyjahh/xquads-squads, 276 stars), Context Mode Output Sandbox (mksglu/context-mode, 26k stars), Context Mode for Antigravity CLI (mksglu/context-mode, 26k stars) and Agent Deck (asheshgoplani/agent-deck, 1k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Claude Code Mastery?
borghei (a GitHub user) maintains it in borghei/Claude-Skills, which has 874 GitHub stars. The repository holds 364 skills in this directory. The repository was last updated on October 7, 2026.
Source: borghei/Claude-Skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.