claude-skills-implementation.md

Skills Implementation

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Two skills are implemented in this repo as part of the Command → Agent → Skill architecture pattern, demonstrating two distinct skill invocation patterns: agent skills (preloaded) and skills (invoked directly).

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Weather SVG Creator (Skill)

File: .claude/skills/weather-svg-creator/SKILL.md

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name: weather-svg-creator
description: Creates an SVG weather card showing the current temperature for
  Dubai. Writes the SVG to orchestration-workflow/weather.svg and updates
  orchestration-workflow/output.md.
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# Weather SVG Creator Skill

This skill creates a visual SVG weather card and writes the output files.

## Task
Create an SVG weather card displaying the temperature for Dubai, UAE,
and write it along with a summary to output files.

## Instructions
You will receive the temperature value and unit (Celsius or Fahrenheit)
from the calling context.

### 1. Create SVG Weather Card
Generate a clean SVG weather card...

### 2. Write SVG File
Write the SVG content to `orchestration-workflow/weather.svg`.

### 3. Write Output Summary
Write to `orchestration-workflow/output.md`...

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This is a skill — invoked directly by the command via the Skill tool. It receives the temperature data from the conversation context and creates the SVG weather card and output summary.

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Weather Fetcher (Agent Skill)

File: .claude/skills/weather-fetcher/SKILL.md

---
name: weather-fetcher
description: Instructions for fetching current weather temperature data
  for Dubai, UAE from Open-Meteo API
user-invocable: false
---

# Weather Fetcher Skill

This skill provides instructions for fetching current weather data.

## Task
Fetch the current temperature for Dubai, UAE in the requested unit
(Celsius or Fahrenheit).

## Instructions
1. Fetch Weather Data: Use the WebFetch tool to get current weather data
   - Celsius URL: https://api.open-meteo.com/v1/forecast?latitude=25.2048&longitude=55.2708&current=temperature_2m&temperature_unit=celsius
   - Fahrenheit URL: https://api.open-meteo.com/v1/forecast?latitude=25.2048&longitude=55.2708&current=temperature_2m&temperature_unit=fahrenheit
2. Extract Temperature: From the JSON response, extract `current.temperature_2m`
3. Return Result: Return the temperature value and unit clearly.

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This is an agent skill — preloaded into the weather-agent at startup via the skills: frontmatter field. It is not invoked directly; instead, it serves as domain knowledge injected into the agent's context. Note user-invocable: false which hides it from the / command menu.

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Two Skill Patterns

Pattern	Invocation	Example	Key Difference
Skill	Skill(skill: "name")	weather-svg-creator	Invoked directly via Skill tool
Agent Skill	Preloaded via skills: field	weather-fetcher	Injected into agent context at startup

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Skill — invoke directly via slash command:

$ claude
> /weather-svg-creator

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Ask Claude to create one for you — it will generate the markdown file with YAML frontmatter and body in .claude/skills/my-skill/SKILL.md

My Skill

Instructions for what the skill does.