Production-ready system prompts for Claude AI and coding agents. Built on the APEI cycle: Analyze → Plan → Execute → Iterate.
| Prompt | Purpose | Tokens | File |
|---|---|---|---|
| Agent System ⭐ | Core operating system | ~1.5K | View |
| Error Analysis | Debugging & root cause | ~2K | View |
| Project Workflow | Full lifecycle management | ~2.5K | View |
| Quick Reference | Cheat sheet (minimal) | ~0.8K | View |
| Code Review | Systematic PR review | ~2K | View |
| Security Audit | Vulnerability detection | ~2.5K | View |
| Refactoring | Code improvement | ~2.5K | View |
| Testing | Test design & TDD | ~3K | View |
| Documentation | Technical writing | ~2.5K | View |
| Performance | Optimization & profiling | ~3K | View |
| Git & VCS | Branching & commits | ~2.5K | View |
| Integration Guardian | System integrity | ~0.5K | View |
| Prompt | Purpose | Tokens | File |
|---|---|---|---|
| Mode Transitions ⭐ | /think, /ultrathink, /compact modes & planning | ~2.5K | View |
| Token Optimization | Token saving strategies for Claude Code | ~2.5K | View |
| Workflow & Config | CLAUDE.md, hooks, permissions, MCP | ~3K | View |
| Prompt | Purpose | Tokens | File |
|---|---|---|---|
| Technology Stack ⭐ | Library discovery, modern tools, hidden gems | ~4K | View |
| Architecture Patterns | System design, microservices, DDD, CQRS | ~3.5K | View |
| Full-Stack Development | Next.js/Nuxt/SvelteKit, end-to-end type safety | ~3.5K | View |
| Prompt Chaining | Multi-step workflows, context management | ~3K | View |
| Prompt | Purpose | Technologies | File |
|---|---|---|---|
| Foundation ⭐ | Universal best practices | Any | View |
| Web Development | Frontend apps | React, Vue, Angular, CSS | View |
| API Development | Backend services | REST, GraphQL, Node, Go | View |
| Data Science & ML | ML pipelines | Python, pandas, PyTorch | View |
| Mobile | Mobile apps | iOS, Android, Flutter, RN | View |
| DevOps & CI/CD | Infrastructure | K8s, Docker, Terraform | View |
| Database & SQL | Data layer | PostgreSQL, MySQL, Redis | View |
| General Software | Cross-language | Python, JS, Go, Java, C# | View |
| Language | Status | Prompts | Link |
|---|---|---|---|
| English | ✅ Complete | 19 agent + 8 project | Index |
| Türkçe | 🔄 In Progress | 7 prompts | Index |
1. Copy content of claude-agent-system-prompt.md
2. Paste as system prompt
3. Give task → Agent runs APEI cycle automatically
1. Copy Foundation prompt + project-type prompt
2. Paste at start of Claude session
3. Describe your task → Follow the APEI cycle together
| Context Budget | Recommended Setup |
|---|---|
| < 2K tokens | Quick Reference only |
| 2K–8K tokens | Agent System Prompt |
| 8K+ tokens | Agent System + project-type prompt |
| Project Type | Prompts to Use |
|---|---|
| AI Agent Task | Agent System |
| Claude Code Setup | Agent System + Workflow & Config |
| Claude Code Planning | Agent System + Mode Transitions |
| Token-Efficient Session | Agent System + Token Optimization |
| Debug / Fix Bugs | Agent System + Error Analysis |
| New Project | Agent System + Project Workflow |
| Choose Best Tools | Agent System + Technology Stack |
| System Architecture | Agent System + Architecture Patterns |
| Full-Stack App (modern) | Agent System + Full-Stack Development |
| Complex Multi-Step Task | Agent System + Prompt Chaining |
| Code Review | Agent System + Code Review |
| React / Vue App | Foundation + Web Development |
| REST API | Foundation + API Development |
| ML Model | Foundation + Data Science & ML |
| Mobile App | Foundation + Mobile |
| DevOps / Infra | Foundation + DevOps & CI/CD |
prompts/
├── english/
│ ├── agents/ # Agent-optimized prompts (19 files)
│ ├── base/ # Foundation prompt
│ ├── project-types/ # Domain-specific prompts (7 files)
│ ├── examples/ # Real-world usage examples
│ └── workflows/ # APEI methodology guide
├── turkish/
│ ├── agents/ # Türkçe agent prompts (6 files)
│ ├── base/ # Türkçe foundation prompt
│ └── INDEX.md
| Resource | Description |
|---|---|
| QUICK-START.md | 30-second setup guide |
| USAGE.md | Detailed examples & advanced usage |
| CONTRIBUTING.md | Contribution guidelines |
| Agent Index | Full agent prompt catalog |
| Workflow Guide | APEI methodology deep-dive |
Fork → Modify prompts → Add team standards → Use.
All prompts are MIT-licensed templates. Adapt for your stack, conventions, and tools.
See CONTRIBUTING.md. Key areas: new languages, new project types, prompt improvements, examples.
MIT License — use, modify, and distribute freely.
