my-mcp-server/
├── src/
│   ├── index.ts          # MCP server (4 tools)
│   ├── types.ts          # TypeScript interfaces
│   ├── pricing.ts        # Model pricing data (USD/INR)
│   └── tokenizer.ts      # Token counting (gpt-tokenizer o200k_base)
├── package.json           # Dependencies and scripts
├── tsconfig.json          # TypeScript configuration
├── README.md              # This file
└── DOCUMENTATION.md       # Full process documentation

# Navigate to the project directory
cd C:\Users\ghosh\Documents\MSS\my-mcp-server

# Install dependencies
npm install

# Run in development mode
npm run dev

npm run dev

npm run dev:watch

npm run build    # Compile TypeScript to dist/
npm start        # Run compiled version

npx tsc --noEmit

npx @modelcontextprotocol/inspector npx tsx src/index.ts

cd C:\Users\ghosh\Documents\MSS\my-mcp-server

echo '{"jsonrpc":"2.0","id":1,"method":"initialize","params":{"protocolVersion":"2024-11-05","capabilities":{},"clientInfo":{"name":"test","version":"1.0.0"}}}
{"jsonrpc":"2.0","method":"notifications/initialized"}
{"jsonrpc":"2.0","id":2,"method":"tools/call","params":{"name":"count_tokens","arguments":{"text":"Hello World!","model":"gpt-4o"}}}
{"jsonrpc":"2.0","id":3,"method":"tools/call","params":{"name":"compare_models","arguments":{"prompt":"Hello","estimated_output_tokens":100}}}' | npx tsx src/index.ts 2>/dev/null

{
  "mcpServers": {
    "hello-world": {
      "command": "npx",
      "args": [
        "tsx",
        "C:\\Users\\ghosh\\Documents\\MSS\\my-mcp-server\\src\\index.ts"
      ]
    }
  }
}

{
  "model": "gpt-4o",
  "token_count": 7,
  "character_count": 31,
  "tokenizer": "OpenAI o200k_base (via gpt-tokenizer) — exact",
  "estimated_input_cost": "$0.000018",
  "currency": "USD"
}

{
  "model": "gpt-4o",
  "provider": "OpenAI",
  "input_tokens": 6,
  "output_tokens": 200,
  "input_cost": "$0.000015",
  "output_cost": "$0.002000",
  "total_cost": "$0.002015",
  "currency": "USD"
}

{
  "original_token_count": 15,
  "character_count": 62,
  "suggested_improvements": [
    { "suggestion": "Replace verbose phrases...", "estimated_savings_percent": 5 },
    { "suggestion": "Consider using GPT-4o-mini...", "estimated_savings_percent": 60 }
  ],
  "best_model_recommendation": "Switch to gpt-4o-mini for ~60% cost savings."
}

{
  "prompt_character_count": 11,
  "estimated_output_tokens": 100,
  "currency": "USD",
  "comparisons": [
    { "model": "gpt-4o-mini", "total_cost": "$0.000060" },
    { "model": "claude-3.5-haiku", "total_cost": "$0.000503" }
  ],
  "summary": {
    "cheapest": "gpt-4o-mini",
    "most_expensive": "claude-3.5-sonnet"
  }
}