Using Agent Skills
addyosmani/agent-skills
Meta-skill for choosing which workflow skill fits the task at hand, plus always-on habits: surface assumptions, stop on confusion, push back, keep it simple and stay in scope.
Claude Code Hero Level 2: The Tome of First Instructions -- create .claude/CLAUDE.md with real personal instructions
Install Level 2 The Tome
$ npx skills add kylesnowschwartz/claude-code-hero --skill level-2-the-tome -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install kylesnowschwartz/claude-code-hero level-2-the-tome --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/kylesnowschwartz/claude-code-hero.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/level-2-the-tome .claude/skills/level-2-the-tome && 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 "level-2-the-tome" agent skill from https://github.com/kylesnowschwartz/claude-code-hero/tree/main/skills/level-2-the-tome into .claude/skills/level-2-the-tome/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "level-2-the-tome", 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/kylesnowschwartz/claude-code-hero/tree/main/skills/level-2-the-tomeType 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 kylesnowschwartz/claude-code-hero --skill level-2-the-tome -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install kylesnowschwartz/claude-code-hero level-2-the-tome --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/kylesnowschwartz/claude-code-hero.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/level-2-the-tome .agents/skills/level-2-the-tome && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "level-2-the-tome" agent skill from https://github.com/kylesnowschwartz/claude-code-hero/tree/main/skills/level-2-the-tome into .agents/skills/level-2-the-tome/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "level-2-the-tome", 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 kylesnowschwartz/claude-code-hero --skill level-2-the-tome -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install kylesnowschwartz/claude-code-hero level-2-the-tome --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/kylesnowschwartz/claude-code-hero.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/level-2-the-tome .cursor/skills/level-2-the-tome && 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 "level-2-the-tome" agent skill from https://github.com/kylesnowschwartz/claude-code-hero/tree/main/skills/level-2-the-tome into .cursor/skills/level-2-the-tome/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "level-2-the-tome", 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/kylesnowschwartz/claude-code-hero.git --path skills/level-2-the-tome--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 kylesnowschwartz/claude-code-hero --skill level-2-the-tome -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install kylesnowschwartz/claude-code-hero level-2-the-tome --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/kylesnowschwartz/claude-code-hero.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/level-2-the-tome .gemini/skills/level-2-the-tome && 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 "level-2-the-tome" agent skill from https://github.com/kylesnowschwartz/claude-code-hero/tree/main/skills/level-2-the-tome into .gemini/skills/level-2-the-tome/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "level-2-the-tome", 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 kylesnowschwartz/claude-code-hero level-2-the-tomeInstalls 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 kylesnowschwartz/claude-code-hero --skill level-2-the-tome -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/kylesnowschwartz/claude-code-hero.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/level-2-the-tome .github/skills/level-2-the-tome && 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 "level-2-the-tome" agent skill from https://github.com/kylesnowschwartz/claude-code-hero/tree/main/skills/level-2-the-tome into .github/skills/level-2-the-tome/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "level-2-the-tome", 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 kylesnowschwartz/claude-code-hero --skill level-2-the-tome -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install kylesnowschwartz/claude-code-hero level-2-the-tome --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/kylesnowschwartz/claude-code-hero.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/level-2-the-tome .opencode/skills/level-2-the-tome && 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 "level-2-the-tome" agent skill from https://github.com/kylesnowschwartz/claude-code-hero/tree/main/skills/level-2-the-tome into .opencode/skills/level-2-the-tome/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "level-2-the-tome", 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
level-2-the-tome- GitHub stars
- 104
- Token cost
- ~1.1k tokens
- SKILL.md length
- 594 words
- Files
- 1
- Skills in repo
- 15
- Repo updated
- First seen
- Licence
- None found
At a glance
Claude Code Hero Level 2: The Tome of First Instructions -- create .claude/CLAUDE.md with real personal instructions
- Tasks that involve Agent instruction files
- SKILL.md covers Objective, Why This Matters, The Quest and Hints, plus 3 more sections
- Calls claude
What it does
Level 2 The Tome is an agent skill from kylesnowschwartz/claude-code-hero. Claude Code Hero Level 2: The Tome of First Instructions -- create .claude/CLAUDE.md with real personal instructions
Its SKILL.md is about 1.1k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Agent Workflows, covering Agent instruction files.
When your agent uses it
- Tasks that involve Agent instruction files
Example prompts
- “/level-2-the-tome”
What it can do on your machine
Read from SKILL.md and the folder at commit 4abcc6d. 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
Shell commands in SKILL.md call:
claude
From the folder's file list and the shell code blocks in SKILL.md.
Network
Links to these hosts (documentation or services it may open):
docs.anthropic.com
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
Level 2 The Tome loads about 1.1k tokens when it runs. Until then it costs about 33 tokens; SKILL.md has 594 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); files beside SKILL.md are not scanned.
SKILL.md
Without a licence we can't republish the file, so here is its outline and opening line. It has 594 words (~1,105 tokens).
“Create or update .claude/CLAUDE.md with a ## Hero's Decree section containing at least three real instructions you want Claude to follow in every session.”
- name
- level-2-the-tome
Files
Just SKILL.md in skills/level-2-the-tome of kylesnowschwartz/claude-code-hero.
Open the folder on GitHubat commit 4abcc6d
Compare with similar skills
Level 2 The Tome 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 |
|---|---|---|---|---|---|---|
| Level 2 The Tome this skillkylesnowschwartz/claude-code-hero | 104 | — | ~1.1k | Automated safety check: Pass | None | |
| Using Agent Skillsaddyosmani/agent-skills | 105k | 4 repos | ~2.4k | Automated safety check: Pass | MIT | |
| Claude ReflectBayramAnnakov/claude-reflect | 1.8k | 2 repos | ~627 | Automated safety check: Pass | MIT | |
| Writing For Agentsbestofjs/bestofjs | 3.1k | 20 repos | ~2.7k | Automated safety check: Pass | MIT | |
| Neat-Freak Knowledge CloseoutKKKKhazix/khazix-skills | 21k | — | ~1.9k | Automated safety check: Pass | MIT | |
| Task Observerrebelytics/one-skill-to-rule-them-all | 3.2k | 1 repos | ~11k | Automated safety check: Pass | CC-BY-4.0 |
Similar skills
Claude Reflect
BayramAnnakov/claude-reflect
Self-learning system that captures corrections during sessions and reminds users to run /reflect to update CLAUDE.md.
Writing For Agents
bestofjs/bestofjs
Writing documents for agents. An agent skill from bestofjs/bestofjs.
Neat-Freak Knowledge Closeout
KKKKhazix/khazix-skills
Brings project docs, agent rule files, authorized memory and leftover workspace files back in line with what the code and runtime actually do at the end of a work session.
Task Observer
rebelytics/one-skill-to-rule-them-all
Monitors task execution for skill improvement opportunities.
- Official
SkillOpt Sleep Cycle
microsoft/SkillOpt
Runs an on-demand or nightly sleep cycle that reviews past Claude Code sessions and proposes validated updates to CLAUDE.md and skills.
More from kylesnowschwartz/claude-code-hero
All 15 skills in this repoLevel 1 The Map Room
kylesnowschwartz/claude-code-hero
Claude Code Hero Level 1: The Map Room -- explore the project's .claude/ directory and document what lives there
Level 10 The Hall Of Watchers
kylesnowschwartz/claude-code-hero
Claude Code Hero Level 10: The Hall of Watchers -- add a PreToolUse prompt hook with a multi-tool matcher
Level 11 The Oracle Well
kylesnowschwartz/claude-code-hero
Claude Code Hero Level 11: The Oracle Well -- connect an MCP server and gain a new tool
Level 12 The Warband
kylesnowschwartz/claude-code-hero
Claude Code Hero Level 12: The Warband -- write a dynamic workflow that fans work out across agents
Level 3 The Goblin Lair
kylesnowschwartz/claude-code-hero
Claude Code Hero Level 3: The Goblin Lair of Commands -- create a custom slash command in .claude/commands/
Level 4 The Wardens Keys
kylesnowschwartz/claude-code-hero
Claude Code Hero Level 4: The Warden's Keys -- configure permission rules in .claude/settings.json
Related
Categories
Questions about Level 2 The Tome
What does Level 2 The Tome do?
Claude Code Hero Level 2: The Tome of First Instructions -- create .claude/CLAUDE.md with real personal instructions. Level 2 The Tome is an agent skill from kylesnowschwartz/claude-code-hero.
When should I use Level 2 The Tome?
Level 2 The Tome fits situations like: tasks that involve Agent instruction files.
How do I install Level 2 The Tome in Claude Code?
Run `npx skills add kylesnowschwartz/claude-code-hero --skill level-2-the-tome -a claude-code`. Or copy the skill folder (skills/level-2-the-tome in kylesnowschwartz/claude-code-hero) into .claude/skills/level-2-the-tome in your project. Claude Code loads it when a task matches its description.
How do I install Level 2 The Tome in Codex?
Run `npx skills add kylesnowschwartz/claude-code-hero --skill level-2-the-tome -a codex`. Or copy the skill folder (skills/level-2-the-tome in kylesnowschwartz/claude-code-hero) into .agents/skills/level-2-the-tome in your project. Codex loads it when a task matches its description.
Can I use Level 2 The Tome 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 kylesnowschwartz/claude-code-hero --skill level-2-the-tome -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/level-2-the-tome, .gemini/skills/level-2-the-tome, .github/skills/level-2-the-tome and .opencode/skills/level-2-the-tome in your project.
What does Level 2 The Tome need to run?
Going by SKILL.md and its folder, Level 2 The Tome needs the command-line tools its instructions call (claude).
Does Level 2 The Tome access the network?
SKILL.md names 1 domain. As links in the text: docs.anthropic.com. This is read from the text; nothing was executed.
Is Level 2 The Tome 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. Review the folder before installing.
What licence does Level 2 The Tome use?
No licence was found for Level 2 The Tome or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Level 2 The Tome use?
About 1.1k tokens (SKILL.md is roughly 4.4k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Level 2 The Tome?
Skills that share tags, products or a category with Level 2 The Tome: Using Agent Skills (addyosmani/agent-skills, 105k stars), Claude Reflect (BayramAnnakov/claude-reflect, 1.8k stars), Writing For Agents (bestofjs/bestofjs, 3.1k stars) and Neat-Freak Knowledge Closeout (KKKKhazix/khazix-skills, 21k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Level 2 The Tome?
kylesnowschwartz (a GitHub user) maintains it in kylesnowschwartz/claude-code-hero, which has 104 GitHub stars. The repository holds 15 skills in this directory. The repository was last updated on September 7, 2026.
Source: kylesnowschwartz/claude-code-hero on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.