mangi-11/eta/skill-creator

Skill Creator

Use this skill when the task is to create, refine, or maintain a skill.

Skills live inside the workspace at skills/<skill-id>/ and are discovered by the agent through the SKILL.md frontmatter plus any bundled scripts/, references/, or assets/.

Core Rules

1. Keep the frontmatter precise.
2. Keep the body short and procedural.
3. Put detailed reference material into references/ instead of bloating SKILL.md.
4. Prefer reusable scripts or templates when the same steps will be repeated.
5. Design for the real runtime: root shell, workspace files, built-in tools, and Android automation.

Skill Shape

Every skill needs a SKILL.md file.

Recommended layout:

skill-id/
├── SKILL.md
├── scripts/
├── references/
└── assets/

Use only the folders that are actually needed.

Frontmatter

Use YAML frontmatter with only these fields:

---
name: my-skill
description: What the skill does and when the agent should use it.
---

Write the description as the trigger contract:

• State the task type clearly.
• State the signals that should trigger the skill.
• Mention important environments or tools when they matter.

Bad description:

Helpful utility for many tasks.

Good description:

Create or update deployment runbooks for workspaces. Use when the user asks to document setup, workspace paths, scheduled runs, or recovery steps for on-device agents.

Body Guidance

Write the body as instructions for another agent.

Prefer:

• imperative steps
• short heuristics
• references to concrete files or directories
• explicit failure handling

Avoid:

• long product overviews
• repeated basics the model already knows
• user-facing marketing text
• duplicate content that belongs in references/

Resource Choices

Use scripts/ when:

• a flow is fragile
• the same code would otherwise be rewritten often
• deterministic output matters

Use references/ when:

• the skill needs schemas, API notes, policy text, or domain documentation
• only part of the material is needed per task

Use assets/ when:

• the skill needs templates, starter projects, icons, or example files that should be copied or edited

Creation Workflow

1. Understand the repeated task the skill should help with.
2. Collect a few realistic user requests that should trigger it.
3. Decide which knowledge belongs in SKILL.md and which belongs in bundled resources.
4. Create the skill directory under skills/<skill-id>/.
5. Write SKILL.md with a strong description and compact body.
6. Add any needed scripts/, references/, or assets/.
7. Re-read the result and cut anything that is obvious, duplicated, or too generic.

Naming Rules

• Use lowercase letters, digits, and hyphens only.
• Keep the id short and descriptive.
• Prefer action-oriented names such as skill-creator, calendar-helper, or workspace-audit.

Review Checklist

Before finishing, verify:

• the skill id matches the folder name
• SKILL.md exists
• the description explains when to use the skill
• the body tells the agent what to do next
• bundled resources are referenced only when needed
• no extra documentation files were added without a clear reason

Editing Existing Skills

When updating a skill:

1. Preserve the trigger intent unless the user explicitly wants to change it.
2. Tighten the description if the skill is triggering too broadly or too narrowly.
3. Move bulky details out of SKILL.md when the file starts becoming hard to scan.
4. Keep examples realistic and aligned with the runtime.

Output Expectation

When asked to create or revise a skill, produce the actual skill files in the workspace rather than only describing them.