Imported from vuthuonghai-steve/KLTN-By_Thuong_Hai-Steve (.agent/skills/prompt-improver/SKILL.md). Install upstream with npx skills add vuthuonghai-steve/KLTN-By_Thuong_Hai-Steve --skill prompt-improver. Copyright stays with the author.

Prompt Improver - AI Prompt Optimization Skill

Skill tu dong phan tich va cai thien prompt de AI Agent hieu va thuc hien dung yeu cau.

Khi Nao Su Dung Skill Nay

Kich Hoat Khi:

• Nguoi dung noi: "prompt khong hieu qua", "AI khong hieu", "ket qua sai"
• Nguoi dung yeu cau: "cai thien prompt", "optimize prompt", "fix prompt"
• Nguoi dung can: tao prompt moi chat luong cao
• Nguoi dung gap van de: AI lam sai, thieu thong tin, khong dung y

Khong Can Kich Hoat Khi:

• Prompt don gian, ro rang
• Yeu cau 1-2 buoc don gian
• Nguoi dung da co prompt hieu qua

Workflow Chinh

[INPUT: Prompt can cai thien]
         |
         v
[PHASE 1: Phan Tich Prompt]
- Xac dinh cau truc hien tai
- Tim cac van de
- Danh gia muc do ro rang
         |
         v
[PHASE 2: Xac Dinh Van De]
- Problem Categories
- Severity Assessment
- Root Cause Analysis
         |
         v
[PHASE 3: De Xuat Cai Thien]
- Ap dung Prompt Framework
- Them context can thiet
- Cau truc lai noi dung
         |
         v
[PHASE 4: Tao Prompt Moi]
- Viet prompt cai thien
- Them examples neu can
- Validate voi checklist
         |
         v
[OUTPUT: Prompt toi uu]

PHASE 1: Phan Tich Prompt

Buoc 1.1: Doc va Hieu Prompt Goc

Khi nhan prompt tu nguoi dung, phan tich theo cac yeu to:

Buoc 1.2: Danh Gia Cau Truc Hien Tai

Kiem tra prompt co cac thanh phan:

[ ] Identity/Role - Vai tro cua AI
[ ] Context - Thong tin nen
[ ] Task - Nhiem vu cu the
[ ] Instructions - Huong dan thuc hien
[ ] Examples - Vi du input/output
[ ] Output Format - Dinh dang ket qua
[ ] Constraints - Rang buoc/gioi han

PHASE 2: Xac Dinh Van De

2.1 Problem Categories

2.2 Severity Assessment

2.3 Root Cause Analysis

Hoi cac cau hoi:

1. Tai sao AI hieu sai?
2. Thong tin nao bi thieu?
3. Phan nao gay nham lan?
4. Co mau thuan nao khong?

PHASE 3: De Xuat Cai Thien

3.1 Prompt Framework (CRISPE)

C - Capacity/Role: Vai tro AI (You are a senior developer...)
R - Request: Yeu cau cu the (Create a function that...)
I - Instructions: Huong dan chi tiet (Step 1... Step 2...)
S - Style: Phong cach output (Professional, concise...)
P - Persona: Doi tuong (Explain like I'm a beginner...)
E - Examples: Vi du input/output

3.2 Context Layers

Layer 1: Environment
- OS, platform, runtime
- Working directory
- Date/time neu can

Layer 2: Project
- Tech stack
- Architecture
- Conventions

Layer 3: Domain
- Business rules
- Terminology
- Constraints

Layer 4: Task-specific
- Files lien quan
- Previous context
- Related issues

3.3 Improvement Techniques

PHASE 4: Tao Prompt Moi

4.1 Template Co Ban

## Context
[Thong tin ve project, environment, background]

## Task
[Yeu cau cu the, ro rang]

## Requirements
- [Yeu cau 1]
- [Yeu cau 2]
- [Rang buoc]

## Expected Output
[Mo ta ket qua mong doi, format]

## Example (neu can)
Input: [vi du input]
Output: [vi du output]

4.2 Template Nang Cao

## Role
You are [vai tro] with expertise in [chuyen mon].

## Context
### Environment
- Project: [ten project]
- Tech Stack: [technologies]
- Current State: [trang thai hien tai]

### Background
[Thong tin nen can thiet]

## Task
[Nhiem vu chinh]

## Instructions
1. [Buoc 1]
2. [Buoc 2]
3. [Buoc 3]

## Constraints
- DO: [Nen lam]
- DON'T: [Khong nen lam]

## Output Format
[Dinh dang ket qua]

## Examples
<example>
Input: [input mau]
Output: [output mau]
</example>

## Success Criteria
- [ ] [Tieu chi 1]
- [ ] [Tieu chi 2]

4.3 Validation Checklist

Truoc khi finalize prompt, kiem tra:

CLARITY (Ro rang)
[ ] Muc tieu duoc neu ro
[ ] Khong co tu mo ho (it, some, maybe)
[ ] Scope duoc gioi han

COMPLETENESS (Day du)
[ ] Co du context
[ ] Co instructions
[ ] Co output format

STRUCTURE (Cau truc)
[ ] Su dung headers/sections
[ ] Co bullet points cho lists
[ ] Logical flow

ACTIONABLE (Thuc hien duoc)
[ ] AI co tools can thiet
[ ] Khong yeu cau bat kha thi
[ ] Co the verify ket qua

EXAMPLES (Vi du)
[ ] Co examples neu task phuc tap
[ ] Examples representative
[ ] Edge cases duoc cover

Vi Du Su Dung

Vi Du 1: Prompt Mo Ho -> Cai Thien

Prompt goc:

Fix the authentication bug

Van de:

• Khong biet bug nao
• Khong biet file nao
• Khong biet expected behavior

Prompt cai thien:

## Context
- Project: Agent-skill API (Next.js 15 + PayloadCMS)
- File: src/app/api/v1/auth/login/route.ts

## Problem
Login endpoint returns 500 error when user enters wrong password.
Expected: Return 401 with message "Sai mat khau"
Actual: Server crash with "Cannot read property 'id' of null"

## Task
Fix the authentication bug so that wrong password returns proper 401 error.

## Constraints
- DO NOT change the response format
- Keep existing validation logic
- Use `errorResponse` helper from @/lib/api-response

## Success Criteria
- [ ] Wrong password returns 401
- [ ] Correct password still works
- [ ] No server crash

Vi Du 2: Prompt Overload -> Restructure

Prompt goc:

I need you to create a new product page with a gallery, reviews section,
add to cart button, related products, and make sure it's responsive and
has good SEO and loads fast and follows our design system and handles
errors properly and has loading states

Van de:

• Qua nhieu yeu cau trong 1 prompt
• Khong co priority
• Khong co chi tiet

Prompt cai thien:

## Context
- Project: Agent-skill Frontend (Next.js 15 + React 19)
- Design System: @Agent-skill-web/src/components/ui/
- Location: Create at src/screens/product/ProductDetailScreen.tsx

## Task
Create Product Detail Page with the following sections:

## Requirements (Priority Order)

### P0 - Must Have
1. **Product Gallery** - Image carousel with zoom
2. **Product Info** - Name, price, description
3. **Add to Cart** - Button with quantity selector
4. **Responsive** - Mobile-first design

### P1 - Should Have
5. **Reviews Section** - List of reviews with ratings
6. **Related Products** - Grid of 4 similar products
7. **Loading States** - Skeleton components

### P2 - Nice to Have
8. **SEO Optimization** - Meta tags, structured data
9. **Error Boundaries** - Graceful error handling

## Technical Constraints
- Use existing UI components from src/components/ui/
- Follow screen pattern: business logic in Screen, thin wrapper in app/
- Use SWR for data fetching

## Output
- ProductDetailScreen.tsx with all P0 requirements
- List of follow-up tasks for P1, P2

Tips Su Dung Skill

1. Bat Dau Tu Van De

• Hoi nguoi dung: "AI dang hieu sai gi?"
• Xac dinh gap between expected vs actual

2. Iterative Improvement

• Khong can perfect ngay lan dau
• Cai thien dan qua feedback

3. Context is King

• Them context > them instructions
• AI can thong tin de suy luan

4. Less is More

• Prompt ngan hon thuong tot hon
• Chi giu thong tin can thiet

5. Test va Validate

• Thu prompt voi AI
• Kiem tra output co dung khong

Quick Reference

Common Fixes

Format Tags Hieu Qua

<context>...</context>      <!-- Thong tin nen -->
<task>...</task>            <!-- Nhiem vu chinh -->
<constraints>...</constraints>  <!-- Rang buoc -->
<example>...</example>      <!-- Vi du -->
<output>...</output>        <!-- Dinh dang output -->

Trigger Phrases

Skill nay duoc kich hoat khi nguoi dung:

Phan Tich Prompt

• "prompt nay co van de gi"
• "tai sao AI khong hieu"
• "phan tich prompt"
• "review prompt"

Cai Thien Prompt

• "cai thien prompt"
• "optimize prompt"
• "fix prompt"
• "lam prompt tot hon"
• "prompt hieu qua hon"

Tao Prompt Moi

• "tao prompt cho..."
• "viet prompt de..."
• "can prompt"
• "giup tao prompt"

Debug Prompt

• "AI lam sai"
• "ket qua khong dung"
• "AI khong lam theo yeu cau"
• "output sai"