Agent skill

Skill Creator

by WellApp-ai in WellApp-ai/Well

Template and guide for creating new skills. An agent skill from WellApp-ai/Well.

MITAuto-check passedAgent Workflows

Install Skill Creator

skills CLI
$ npx skills add WellApp-ai/Well --skill skill-creator -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install WellApp-ai/Well skill-creator --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/WellApp-ai/Well.git skills-src && mkdir -p .claude/skills && cp -r skills-src/cursor-rules/skills/skill-creator .claude/skills/skill-creator && rm -rf skills-src

Use ~/.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/

Facts

Skill name
skill-creator
GitHub stars
345
Token cost
~445 tokens
SKILL.md length
153 words
Files
1
Skills in repo
36
Repo updated
First seen
Licence
MIT

At a glance

Template and guide for creating new skills. An agent skill from WellApp-ai/Well.

  • Works in 5 steps: YAML Frontmatter - name and description → Title - Clear skill name → When to Use - Trigger conditions → …
  • Tasks that involve Skill authoring
  • SKILL.md covers SKILL.md Template, Skill vs Mode Decision, File Location and Naming Conventions, plus 4 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Skill Creator is an agent skill from WellApp-ai/Well. Template and guide for creating new skills

Its SKILL.md is about 450 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: No more Sundays on Finance. We build the infrastructure that retrieves, processes, and routes your financial and business data to your FinOps stack, so founders can ship, not… The licence is MIT.

When your agent uses it

  • Tasks that involve Skill authoring

Example prompts

  • “/skill-creator”

Workflow steps

5 steps, taken from the first numbered list in SKILL.md.

  1. YAML Frontmatter - name and description
  2. Title - Clear skill name
  3. When to Use - Trigger conditions
  4. Instructions - What Claude should do
  5. Examples - Concrete usage

What it can do on your machine

Read from SKILL.md and the folder at commit c740217. 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 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 Creator loads about 445 tokens when it runs. Until then it costs about 14 tokens; SKILL.md has 153 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~14
When it runs · the whole SKILL.md, loaded when a task matches
~445

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 WellApp-ai/Well at commit c740217, republished under its MIT licence (© WellApp-ai). 153 words, ~445 tokens.

Download SKILL.mdSave it as .claude/skills/skill-creator/SKILL.md (or your agent's skills folder).
name
skill-creator
description
Template and guide for creating new skills

Skill Creator

Use this skill to create new skills.

SKILL.md Template

yaml
---
name: your-skill-name
description: When to use this skill
---

# Skill Name

Brief description of what this skill does.

## When to Use
- Situation 1
- Situation 2

## Instructions
Step-by-step guide Claude follows.

## Examples
Concrete usage examples.

## Guidelines
- Best practice 1
- Best practice 2

Skill vs Mode Decision

Create a...When...
ModeTriggered by user intent (workflow)
SkillInvoked explicitly for capability

Examples:

  • "init feature" → Mode (workflow triggered by intent)
  • "use webapp-testing" → Skill (capability invoked explicitly)

File Location

  • Modes: .cursor/rules/modes/<name>.mdc
  • Skills: .cursor/rules/skills/<name>/SKILL.md

Naming Conventions

  • Use lowercase with hyphens: my-skill-name
  • Be descriptive: webapp-testing not test
  • Match the folder name to the skill name

Required Sections

  1. YAML Frontmatter - name and description
  2. Title - Clear skill name
  3. When to Use - Trigger conditions
  4. Instructions - What Claude should do
  5. Examples - Concrete usage

Optional Sections

  • Guidelines / Best Practices
  • Common Issues / Troubleshooting
  • Related Skills / Modes

After Creating

  1. Test the skill with explicit invocation: "use [skill-name] skill"
  2. Document in team wiki if shared
  3. Consider adding to Mode Detection if workflow-based

Existing Skills

SkillPurpose
mcp-serverCreate MCP integrations
webapp-testingBrowser/Storybook testing
skill-creatorCreate new skills (this one)

© WellApp-ai, MIT. 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 cursor-rules/skills/skill-creator of WellApp-ai/Well.

Open the folder on GitHubat commit c740217

Compare with similar skills

Skill Creator 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 Creator compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Skill Creator this skillWellApp-ai/Well345—~445Automated safety check: PassMIT
Skill CreatorAzure/azqr79589 repos~8.2kAutomated safety check: PassApache-2.0
Claude Code Skill Developer Guidediet103/claude-code-infrastructure-showcase10k11 repos~3.5kAutomated safety check: PassMIT
Darwin Skill Optimizeralchaincyf/darwin-skill6.2k1 repos~4.7kAutomated safety check: PassMIT
Claude Code Command Developmentanthropics/claude-plugins-official38k10 repos~4.8kAutomated safety check: PassApache-2.0
Claude Code Plugin Structureanthropics/claude-plugins-official38k10 repos~3.4kAutomated safety check: PassApache-2.0

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Categories

Questions about Skill Creator

What does Skill Creator do?

Template and guide for creating new skills. An agent skill from WellApp-ai/Well. Skill Creator is an agent skill from WellApp-ai/Well.

When should I use Skill Creator?

Skill Creator fits situations like: tasks that involve Skill authoring.

How do I install Skill Creator in Claude Code?

Run `npx skills add WellApp-ai/Well --skill skill-creator -a claude-code`. Or copy the skill folder (cursor-rules/skills/skill-creator in WellApp-ai/Well) into .claude/skills/skill-creator in your project. Claude Code loads it when a task matches its description.

How do I install Skill Creator in Codex?

Run `npx skills add WellApp-ai/Well --skill skill-creator -a codex`. Or copy the skill folder (cursor-rules/skills/skill-creator in WellApp-ai/Well) into .agents/skills/skill-creator in your project. Codex loads it when a task matches its description.

Can I use Skill Creator 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 WellApp-ai/Well --skill skill-creator -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-creator, .gemini/skills/skill-creator, .github/skills/skill-creator and .opencode/skills/skill-creator in your project.

What does Skill Creator need to run?

SKILL.md names no scripts, command-line tools or credentials: Skill Creator is instructions for the agent only.

Does Skill Creator 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 Creator 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 Creator use?

Skill Creator is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Skill Creator use?

About 445 tokens (SKILL.md is roughly 1.8k 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 Creator?

Skills that share tags, products or a category with Skill Creator: 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 Creator?

WellApp-ai (a GitHub organization) maintains it in WellApp-ai/Well, which has 345 GitHub stars. The repository holds 36 skills in this directory. The repository was last updated on October 7, 2026.

Source: WellApp-ai/Well on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.