Skill Creator
Azure/azqr
Create new skills, modify and improve existing skills, and measure skill performance.
Creates and structures SKILL.md files for AI coding agents, including YAML frontmatter, trigger phrases, directive instructions, decision trees, code examples, and verification checklists.
Install Skill Authoring
$ npx skills add rohitg00/skillkit --skill skill-authoring -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install rohitg00/skillkit skill-authoring --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/rohitg00/skillkit.git skills-src && mkdir -p .claude/skills && cp -r skills-src/packages/core/src/methodology/packs/meta/skill-authoring .claude/skills/skill-authoring && 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 "skill-authoring" agent skill from https://github.com/rohitg00/skillkit/tree/main/packages/core/src/methodology/packs/meta/skill-authoring into .claude/skills/skill-authoring/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "skill-authoring", 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/rohitg00/skillkit/tree/main/packages/core/src/methodology/packs/meta/skill-authoringType 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 rohitg00/skillkit --skill skill-authoring -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install rohitg00/skillkit skill-authoring --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/rohitg00/skillkit.git skills-src && mkdir -p .agents/skills && cp -r skills-src/packages/core/src/methodology/packs/meta/skill-authoring .agents/skills/skill-authoring && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "skill-authoring" agent skill from https://github.com/rohitg00/skillkit/tree/main/packages/core/src/methodology/packs/meta/skill-authoring into .agents/skills/skill-authoring/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "skill-authoring", 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 rohitg00/skillkit --skill skill-authoring -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install rohitg00/skillkit skill-authoring --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/rohitg00/skillkit.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/packages/core/src/methodology/packs/meta/skill-authoring .cursor/skills/skill-authoring && 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 "skill-authoring" agent skill from https://github.com/rohitg00/skillkit/tree/main/packages/core/src/methodology/packs/meta/skill-authoring into .cursor/skills/skill-authoring/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "skill-authoring", 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/rohitg00/skillkit.git --path packages/core/src/methodology/packs/meta/skill-authoring--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 rohitg00/skillkit --skill skill-authoring -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install rohitg00/skillkit skill-authoring --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/rohitg00/skillkit.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/packages/core/src/methodology/packs/meta/skill-authoring .gemini/skills/skill-authoring && 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 "skill-authoring" agent skill from https://github.com/rohitg00/skillkit/tree/main/packages/core/src/methodology/packs/meta/skill-authoring into .gemini/skills/skill-authoring/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "skill-authoring", 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 rohitg00/skillkit skill-authoringInstalls 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 rohitg00/skillkit --skill skill-authoring -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/rohitg00/skillkit.git skills-src && mkdir -p .github/skills && cp -r skills-src/packages/core/src/methodology/packs/meta/skill-authoring .github/skills/skill-authoring && 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 "skill-authoring" agent skill from https://github.com/rohitg00/skillkit/tree/main/packages/core/src/methodology/packs/meta/skill-authoring into .github/skills/skill-authoring/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "skill-authoring", 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 rohitg00/skillkit --skill skill-authoring -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install rohitg00/skillkit skill-authoring --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/rohitg00/skillkit.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/packages/core/src/methodology/packs/meta/skill-authoring .opencode/skills/skill-authoring && 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 "skill-authoring" agent skill from https://github.com/rohitg00/skillkit/tree/main/packages/core/src/methodology/packs/meta/skill-authoring into .opencode/skills/skill-authoring/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "skill-authoring", 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
skill-authoring- GitHub stars
- 1.5k
- Token cost
- ~1.5k tokens
- SKILL.md length
- 521 words
- Files
- 1
- Skills in repo
- 14
- Repo updated
- First seen
- Licence
- Apache-2.0
At a glance
Creates and structures SKILL.md files for AI coding agents, including YAML frontmatter, trigger phrases, directive instructions, decision trees, code examples, and verification checklists.
- Works in 4 steps: Natural language — How would a human ask… → Multiple variations — Different ways to… → Specific enough — Don't trigger on too… → …
- Directive instructions
- SKILL.md covers Core Principle, Skill Anatomy, Writing Effective Triggers and Writing Skill Content, plus 6 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Skill Authoring is an agent skill from rohitg00/skillkit. Creates and structures SKILL.md files for AI coding agents, including YAML frontmatter, trigger phrases, directive instructions, decision trees, code examples, and verification checklists. Use when the user asks to write a new skill, create a skill file, author agent capabilities, generate skill documentation, or define a skill template for Claude Code agents.
Its SKILL.md is about 1.5k 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 Skill authoring. The repository describes itself as: Supercharge AI coding agents with portable skills. Install, translate & share skills across Claude Code, Cursor, Codex, Copilot & 40 more. The licence is Apache-2.0.
When your agent uses it
- Directive instructions
- Verification checklists
- The user asks to write a new skill
- Create a skill file
Example prompts
- “Use the skill-authoring skill to create and structures SKILL.md files for AI coding agents, including YAML frontmatter, trigger phrases, directive…”
- “/skill-authoring”
Workflow steps
4 steps, taken from the first numbered list in SKILL.md.
- Natural language — How would a human ask for this?
- Multiple variations — Different ways to say the same thing
- Specific enough — Don't trigger on too many queries
- Common terms — Use terms people actually use
What it can do on your machine
Read from SKILL.md and the folder at commit d2e5c34. 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
No scripts in the folder and no shell commands in SKILL.md (its code samples are markdown, typescript and yaml).
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
Skill Authoring loads about 1.5k tokens when it runs. Until then it costs about 95 tokens; SKILL.md has 521 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
The full file from rohitg00/skillkit at commit d2e5c34, republished under its Apache-2.0 licence (© rohitg00). 521 words, ~1,515 tokens.
Download SKILL.mdSave it as
.claude/skills/skill-authoring/SKILL.md (or your agent's skills folder).- name
- skill-authoring
- description
- Creates and structures SKILL.md files for AI coding agents, including YAML frontmatter, trigger phrases, directive instructions, decision trees, code examples, and verification checklists. Use when the user asks to write a new skill, create a skill file, author agent capabilities, generate skill documentation, or define a skill template for Claude Code agents.
- version
- 1.0.0
- triggers
- write a skill, create skill, author skill, skill template, how to write skills
- tags
- meta, authoring, skills, writing
- difficulty
- intermediate
- estimatedTime
- 20
Skill Authoring Guide
You are authoring a SKILL.md for an AI coding agent. A well-written skill provides clear, actionable guidance that agents can follow consistently.
Core Principle
A skill's description triggers it; the body teaches it.
The description tells the agent WHEN to use the skill. The content tells the agent HOW to execute it.
Skill Anatomy
SKILL.md Structure
---
name: [lowercase-hyphenated-name]
description: [Concrete actions + "Use when..." clause]
version: [Semantic version]
triggers:
- [keyword 1]
- [keyword 2]
tags:
- [tag 1]
---
# [Skill Title]
[Introduction paragraph explaining purpose]
## Core Principle
**[Single most important rule in bold]**
## [Main Content Sections]
## [Decision Points]
## [Verification Checklist]Frontmatter Fields
| Field | Required | Constraints |
|---|---|---|
| name | Yes | Lowercase alphanumeric + hyphens, 1–64 chars |
| description | Yes | Must include "Use when..." clause; 1–1024 chars |
| version | Yes | Semantic version (e.g. 1.0.0) |
| triggers | Recommended | Natural-language phrases that activate the skill |
| tags | Recommended | Categorization tags |
Writing Effective Triggers
Triggers should be phrases users naturally type.
Good triggers:
- "write tests first"
- "tdd"
- "test driven development"
Bad triggers:
- "testing methodology" (too vague)
- "red-green-refactor-cycle-for-test-driven-development" (too specific)
- "skill-123" (not natural language)
Trigger Guidelines
- Natural language — How would a human ask for this?
- Multiple variations — Different ways to say the same thing
- Specific enough — Don't trigger on too many queries
- Common terms — Use terms people actually use
Writing Skill Content
Voice and Tone
Use second person, present tense, active voice:
- ✅ "Write the test first"
- ✅ "You are implementing TDD"
- ❌ "The developer should..." (passive)
- ❌ "It is recommended that..." (wordy)
Structure Guidelines
- Start with context — What is the agent doing and why
- State the core principle — Most important rule upfront
- Provide process — Step-by-step guidance
- Include examples — Concrete illustrations
- Add a checklist — Verification criteria
- End with integration — How this connects to other skills
Directive Language
| Strength | Examples |
|---|---|
| Strong (critical rules) | "You MUST…", "ALWAYS…", "NEVER…", "Do NOT…" |
| Soft (recommendations) | "Prefer…", "Consider…", "When possible…" |
Content Patterns
Decision Trees
## Decision: [What to Decide]
If [condition A]:
→ [Action for A]
If [condition B]:
→ [Action for B]
If uncertain:
→ [Default action]Process Steps
### Step 1: [Action]
[Detailed explanation]
**Verification:** [How to know step is complete]
### Step 2: [Action]
...Code Examples
// BAD
const result = doTheThing(badInput);
// GOOD
const validated = validate(input);
const result = doTheThing(validated);Anti-Patterns to Avoid
| Anti-pattern | Problem | Fix |
|---|---|---|
| The Encyclopedia | Too much info, agent gets lost | Focus on actionable guidance only |
| The Vague Guide | "Consider best practices" | Be specific: "Use Arrange-Act-Assert" |
| The Constraint-Free Skill | No clear rules, agent improvises | Include explicit constraints |
| The Monologue | Wall of text | Use headers, lists, tables, code blocks |
| The Outdated Skill | References deprecated patterns | Version skills and review periodically |
Show full SKILL.md (185 more words)Show less
Skill Testing
Before publishing, verify:
- Trigger test — Does it activate on expected phrases?
- Completeness test — Can the agent follow it without external info?
- Clarity test — Is every instruction unambiguous?
- Contradiction test — No conflicting guidance?
- Edge case test — Handles unusual situations?
Pack Organization
Group related skills under a named pack directory. See PACKS.md for full pack manifest format and filesystem conventions.
packs/
├── testing/
│ ├── pack.json
│ ├── red-green-refactor/
│ │ └── SKILL.md
│ └── test-patterns/
│ └── SKILL.mdSkill Maintenance
See MAINTENANCE.md for detailed versioning policy. Quick reference:
Version increments:
- Patch (1.0.x): Typos, clarifications, minor fixes
- Minor (1.x.0): New sections, examples, capabilities
- Major (x.0.0): Breaking changes, fundamental rewrites
Deprecation frontmatter:
deprecated: true
deprecatedReason: "Superseded by skill-v2"
deprecatedSince: "2024-01-15"Add a visible notice at the top of the body: > **DEPRECATED:** Use [skill-v2] instead.
Publication Checklist
Before publishing, confirm:
- Frontmatter is complete and valid (name, description, version)
- Description includes concrete actions and a "Use when…" clause
- Triggers are natural-language phrases, specific but not over-fitted
- Core principle is clear and prominent
- Content uses headers, lists, or tables — no walls of text
- Code examples demonstrate correct vs. incorrect usage
- Verification criteria are included
- Related skills are linked where applicable
- No spelling/grammar errors
- Tested with target agents against all trigger phrases
© rohitg00, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in packages/core/src/methodology/packs/meta/skill-authoring of rohitg00/skillkit.
Open the folder on GitHubat commit d2e5c34
Compare with similar skills
Skill Authoring 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 |
|---|---|---|---|---|---|---|
| Skill Authoring this skillrohitg00/skillkit | 1.5k | — | ~1.5k | Automated safety check: Pass | Apache-2.0 | |
| Skill CreatorAzure/azqr | 795 | 89 repos | ~8.2k | Automated safety check: Pass | Apache-2.0 | |
| Claude Code Skill Developer Guidediet103/claude-code-infrastructure-showcase | 10k | 11 repos | ~3.5k | Automated safety check: Pass | MIT | |
| Darwin Skill Optimizeralchaincyf/darwin-skill | 6.2k | 1 repos | ~4.7k | Automated safety check: Pass | MIT | |
| Claude Code Command Developmentanthropics/claude-plugins-official | 38k | 10 repos | ~4.8k | Automated safety check: Pass | Apache-2.0 | |
| Claude Code Plugin Structureanthropics/claude-plugins-official | 38k | 10 repos | ~3.4k | Automated safety check: Pass | Apache-2.0 |
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- Official
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diet103/claude-code-infrastructure-showcase
A guide to creating and managing Claude Code skills with auto-activation: skill-rules.json triggers, hooks, enforcement levels, YAML frontmatter and progressive disclosure.
Darwin Skill Optimizer
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Scores SKILL.md files on a nine-dimension rubric, then improves them in a keep-or-revert loop with independent judge agents, test prompts, git history and human checkpoints.
- Official
Claude Code Command Development
anthropics/claude-plugins-official
Explains how to write Claude Code slash commands: Markdown files with YAML frontmatter, arguments, file references, bash context and interactive prompts.
- Official
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Skill Release Gate
rohitg00/ai-engineering-from-scratch
Evaluates an Agent Skill bundle before release for structure, trigger quality, artifact improvement, script correctness, safety, installed-tree integrity and host portability.
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Related
Categories
Questions about Skill Authoring
What does Skill Authoring do?
Creates and structures SKILL.md files for AI coding agents, including YAML frontmatter, trigger phrases, directive instructions, decision trees, code examples, and verification checklists. Skill Authoring is an agent skill from rohitg00/skillkit.md files for AI coding agents, including YAML frontmatter, trigger phrases, directive instructions, decision trees, code examples, and verification checklists.
When should I use Skill Authoring?
Skill Authoring fits situations like: directive instructions; verification checklists; the user asks to write a new skill; create a skill file.
How do I install Skill Authoring in Claude Code?
Run `npx skills add rohitg00/skillkit --skill skill-authoring -a claude-code`. Or copy the skill folder (packages/core/src/methodology/packs/meta/skill-authoring in rohitg00/skillkit) into .claude/skills/skill-authoring in your project. Claude Code loads it when a task matches its description.
How do I install Skill Authoring in Codex?
Run `npx skills add rohitg00/skillkit --skill skill-authoring -a codex`. Or copy the skill folder (packages/core/src/methodology/packs/meta/skill-authoring in rohitg00/skillkit) into .agents/skills/skill-authoring in your project. Codex loads it when a task matches its description.
Can I use Skill Authoring 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 rohitg00/skillkit --skill skill-authoring -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/skill-authoring, .gemini/skills/skill-authoring, .github/skills/skill-authoring and .opencode/skills/skill-authoring in your project.
What does Skill Authoring need to run?
SKILL.md names no scripts, command-line tools or credentials: Skill Authoring is instructions for the agent only.
Does Skill Authoring 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 Skill Authoring 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 Skill Authoring use?
Skill Authoring is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Skill Authoring use?
About 1.5k tokens (SKILL.md is roughly 6.1k 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 Skill Authoring?
Skills that share tags, products or a category with Skill Authoring: Skill Creator (Azure/azqr, 795 stars), Claude Code Skill Developer Guide (diet103/claude-code-infrastructure-showcase, 10k stars), Darwin Skill Optimizer (alchaincyf/darwin-skill, 6.2k stars) and Claude Code Command Development (anthropics/claude-plugins-official, 38k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Skill Authoring?
rohitg00 (a GitHub user) maintains it in rohitg00/skillkit, which has 1,546 GitHub stars. The repository holds 14 skills in this directory. The repository was last updated on June 2, 2026.
Source: rohitg00/skillkit on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.