# File Reference
This document explains what each file in your MCP Calculator Server project does.
## Main Files
### README.md (Primary Document)
**Purpose:** Complete, detailed setup guide for the MCP Calculator Server
**Contains:**
- Prerequisites checklist
- 10-step complete setup guide
- Python installation for Windows, macOS, Linux
- pip installation and verification
- uv installation and verification
- Virtual environment creation and activation
- MCP SDK installation with CLI tools
- Server file creation with complete source code
- Installation verification steps
- Server execution instructions
- Testing instructions
- Troubleshooting (13 scenarios covered)
- Project structure diagram
- Resource links
**Start here** if you're setting up the project from scratch.
---
### calculator_server.py (The Server)
**Purpose:** The actual MCP Server implementation
**Contains:**
- MCP Server with 4 arithmetic tools:
- `add(a, b)` - Returns a + b
- `subtract(a, b)` - Returns a - b
- `multiply(a, b)` - Returns a * b
- `divide(a, b)` - Returns a / b (with error handling)
**Type hints:** All parameters and returns are floats
**Error handling:** Division by zero raises ValueError
**Run with:**
```bash
python calculator_server.py
```
---
### QUICKSTART.md (Quick Reference)
**Purpose:** Fast reference guide for experienced users
**Contains:**
- 30-second setup commands
- Available tools reference
- Common commands
- Quick troubleshooting
**Use this** if you've done this before or just need a quick reminder.
---
### .gitignore (Git Configuration)
**Purpose:** Tells git which files to ignore when committing
**Ignores:**
- .venv folder (virtual environment)
- __pycache__ (Python cache)
- .pyc files (compiled Python)
- .env files (environment variables)
- IDE folders (.vscode, .idea)
- OS files (.DS_Store, Thumbs.db)
**Use this** if you're putting the project in git version control.
---
### LLMknowledge.md (Reference Material)
**Purpose:** Original MCP documentation
**Contains:**
- Build an MCP Client
- Build an MCP Server
- Connect to local MCP servers
- Connect to remote MCP servers
- MCP Apps
- Model Context Protocol overview
**Reference** when you want to learn more about MCP concepts.
---
### SETUP_COMPLETE.md (This File's Purpose)
**Purpose:** Project summary and completion status
**Contains:**
- Files overview
- Setup confirmation
- Included features
- Quick reference
---
## How to Use These Files
### First Time Setup?
1. Read **README.md** from top to bottom
2. Follow each step exactly
3. Use verification commands after each step
4. Reference troubleshooting section if issues arise
### Need Quick Help?
1. Check **QUICKSTART.md** for common commands
2. Use **README.md#Troubleshooting** for problems
3. Review **calculator_server.py** if modifying code
### Want to Learn MCP?
1. Reference **LLMknowledge.md** for concepts
2. Study **calculator_server.py** for implementation
3. Visit the resources links in **README.md**
### Setting Up Version Control?
1. **Keep .gitignore** in your repo
2. **Ignore .venv folder** (it's in .gitignore)
3. **Commit:** README.md, calculator_server.py, .gitignore
4. **Don't commit:** .venv folder or generated __pycache__
## File Sizes
- README.md: ~574 lines (comprehensive guide)
- calculator_server.py: ~77 lines (complete server)
- QUICKSTART.md: ~50 lines (reference)
- .gitignore: ~35 lines (git config)
- SETUP_COMPLETE.md: ~90 lines (this summary)
## Next Steps
1. **Read README.md** to set up your environment
2. **Run calculator_server.py** once environment is ready
3. **Test using MCP Inspector** as described in README
4. **Extend the server** with more tools (see README.md#Next Steps)
5. **Share your server** using Claude Desktop integration (in README)
---
**Total Documentation Lines:** ~850 lines of clear, step-by-step instructions
**Coverage:** Every step from installing Python to running the server
