Project Skill Installer

Design Philosophy: Users don't say "install a skill". They say "I want to do X" or "help me with Y". This skill transforms goal descriptions into skill installation plans.

Core Principle: Goal-First, Not Installation-First

When a user mentions any of these, activate this skill:

• "I want to do X with AI help"
• "Can AI help me with..."
• "How do I set up..."
• "What's available for..."
• "I need a skill that..."
• "Help me use..."

DO NOT ask "Which skill do you want to install?" - understand their goal first.

L1: Goal Understanding

Goal Classification

Extract Installation Requirements

From user's goal, determine:

• What capability: What do they want AI to do?
• Project context: What language/framework are they using?
• Integration: Where should the skill live?

L2: Project Analysis Pipeline

Run in parallel with goal understanding:

Analysis 1: Existing Skills

Check:
- .trae/skills/ - what's already installed
- .claude/skills/ - alternative location
- package.json - skill dependencies

Analysis 2: Project Context

Detect:
- Language: from package.json, go.mod, etc.
- Framework: React, Vue, Swift, etc.
- Build tool: npm, yarn, cargo, etc.

Analysis 3: Available Skills

Use find-skills to discover:
- What skills match the user's goal
- What's already installed
- What needs to be installed

L3: Installation Plan Design

Based on Goal + Analysis, design the installation:

## Installation Plan

Goal: {user's goal in their words}
Needed: {skill that fulfills the goal}
Current Status: {installed / not installed / partially installed}
Action: {install / configure / update / nothing needed}

### Installation Steps
1. {step 1}
2. {step 2}
...

### Configuration (if needed)
- Output path: {project-relative path}
- Project integration: {how to integrate with project}

L4: Validation (Before Execution)

Show user BEFORE installing:

I'll help you achieve: {user's goal}

Plan:
- Skill needed: {name}
- Current status: {installed/not installed}
- Action: {what will happen}
- Location: {where skill will be placed}

Is this correct? Should I adjust anything?

WAIT for confirmation before delegating to find-skills.

L5: Delegation to find-skills

After user confirmation:

1. Prepare delegation inputs:

   • runtime_target: detected from project
   • project_root: verified project path
   • project_only: true (always)
   • requested_skill_intent: user's goal

2. Delegate to find-skills with project-only constraint

3. Verify installation succeeded

L6: Quality Gates

Before delivery, verify:

• Skill is actually needed (not already available)
• Installation target is project-relative, not global
• Project context is preserved
• User's goal can be fulfilled

L7: Output Contract

Always produce:

1. Goal Understanding: What the user wants to accomplish
2. Installation Plan: What will be installed/configured
3. Execution Summary: What happened
4. Usage Guide: How to use the installed skill

Reference: AskUserQuestion Triggers (Limited)

Only use AskUserQuestion when:

• Multiple skills match the goal and user needs to choose
• User's goal is vague and needs clarification

DO NOT use for:

• Asking where to install (use project conventions)
• Asking which specific skill (infer from goal)

Prerequisites

• Requires find-skills to be globally available
• If missing, prompt user: npx skills add find-skills -g -y

References

• Path Discovery: Output paths (load AFTER plan design)
• Agent Skills Core Practices: Quality guidelines