Fen Ecosystem
SkillDev toolsGeneral-purpose skill for Mechanic/Fen ecosystem work. Covers ecosystem context, development tools, component overview, and AFD principles. Use for everyday addon work, exploration, or when unsure which specialized skill to use. Triggers: work, build, develop, create, mechanic, fen, fencore, fenui, ecosystem, addon.
Available today. Use it from your connected AI after setup.
No other account needed.
Connect ahel once, and every AI you use reads what you have installed.
Then ask your AI: use the Fen Ecosystem skill
What this skill tells your AI
The instructions your AI receives, as published by falkicon/mechanic in .agent/skills/s-working/SKILL.md and read by ahel’s review.
Expert guidance for working in the Mechanic/Fen WoW addon development ecosystem.
The Reload Loop (MANDATORY)
After ANY addon code change, you MUST verify the changes in-game:
- Ask the user to
/reloadin WoW (or trigger via keybinding CTRL+SHIFT+R) - Wait for the user to confirm the reload is complete
- Then use the
addon.outputMCP tool (agent_mode=true) to get errors, tests, and console logs
CRITICAL: Do NOT call
addon.outputimmediately after changes. The timing between reload and SavedVariables sync is unpredictable. Always wait for user confirmation before pulling output.
Ecosystem Components
| Component | Purpose | Key Tools |
|---|---|---|
| Mechanic | Development hub | env.status, addon.output, reload.trigger |
| FenCore | Pure logic library | fencore.catalog, fencore.search, fencore.info |
| FenUI | UI widget library | Layout, Panel, Tabs, Grid, Buttons |
| MechanicLib | Bridge library | RegisterAddon, Print, RegisterTest |
Essential MCP Tools
| Task | MCP Tool |
|---|---|
| Get Addon Output | addon.output (agent_mode=true) |
| Lint Code | addon.lint |
| Run Tests | addon.test |
| Search APIs | api.search |
| Search FenCore | fencore.search |
| Env Status | env.status |
AFD Core Principles
Mechanic follows Agent-First Development (AFD) — github.com/Falkicon/afd
- Tool-First: All functionality must exist as an MCP tool before being added to any UI.
- Structured Results: All tools return predictable JSON schemas with
success,data, anderror. - Agent Mode: Use
agent_mode=truefor distilled, AI-optimized output.
Routing Logic
| Request type | Load reference |
|---|---|
| Component details, architecture | references/components.md |
| Daily workflows, patterns | references/workflow.md |
| Quick API reference | references/quick-api.md |
| MCP tool reference | ../using-mechanic/references/afd-commands.md |
Signals
- GitHub stars
- 20
- Forks
- 5
- Last commit
- Sep 2026
Advanced
- Catalog kind
- skill
- Gateway key
s-work- Source
- github.com/falkicon/mechanic