Skill Creation

Skill Creation Helper

This skill assists in creating OpenCode compatible skill files by generating the required YAML frontmatter for a SKILL.md file.

Usage

When you want to create a new skill for OpenCode, you can use this skill to generate the proper frontmatter structure.

Example

To create a new skill called "my-new-skill":

1. Create the directory: .opencode/skills/my-new-skill/
2. Use this skill to generate the SKILL.md file in that directory
3. Fill in the content below the frontmatter with your skill's documentation

Frontmatter Structure

Every OpenCode skill must start with YAML frontmatter containing:

• name (required): The skill name (must match the directory name)
• description (required): A brief description of what the skill does
• license (optional): The license for the skill (e.g., MIT)
• compatibility (optional): Specifies which agents can use the skill (e.g., opencode)
• metadata (optional): A string-to-string map for additional information

Name Requirements

The skill name must:

• Be 1-64 characters
• Be lowercase alphanumeric with single hyphen separators
• Not start or end with -
• Not contain consecutive --
• Match the directory name that contains SKILL.md

Equivalent regex: ^[a-z0-9]+(-[a-z0-9]+)*$

Description Requirements

• Must be 1-1024 characters
• Keep it specific enough for the agent to choose correctly

How This Skill Works

This skill itself doesn't modify files directly, but provides guidance on creating skill files. To actually create a skill file:

1. Create the skill directory: .opencode/skills/<your-skill-name>/
2. Create a SKILL.md file in that directory
3. Add the YAML frontmatter at the top of the file (as shown above)
4. Add your skill's documentation below the frontmatter

Example Skill File

Here's what a complete skill file might look like:

---
name: example-skill
description: An example skill demonstrating the structure
license: MIT
compatibility: opencode
metadata:
  audience: beginners
  workflow: learning
---
# Example Skill

This is an example skill that shows the proper structure.

## What I do

- Demonstrate skill file structure
- Show how to add frontmatter
- Provide a template for new skills

## When to use me

Use this when you want to see how to structure an OpenCode skill.

Validation

OpenCode will validate your skill file when it's loaded:

• Checks that the frontmatter is valid YAML
• Verifies required fields are present
• Ensures the name matches the directory
• Validates the name format and description length

If validation fails, the skill won't be available to agents.