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        "# 🔧 Building Basic MCP Tools\n",
        "\n",
        "Welcome to the world of practical MCP tools! In this notebook, you'll learn to create useful, real-world tools that demonstrate the power and versatility of the MCP protocol.\n",
        "\n",
        "## 🎯 Learning Objectives\n",
        "\n",
        "By the end of this notebook, you will:\n",
        "- Build a calculator tool with multiple operations\n",
        "- Create a text processing tool for common string operations\n",
        "- Develop a unit converter tool\n",
        "- Understand best practices for tool design\n",
        "- Learn error handling and input validation\n",
        "\n",
        "## 🛠️ Tools You'll Build\n",
        "\n",
        "1. **🧮 Smart Calculator** - Math operations with history\n",
        "2. **📝 Text Processor** - String manipulation utilities\n",
        "3. **🔄 Unit Converter** - Convert between different units\n",
        "4. **📊 Data Formatter** - Format data in various ways\n",
        "\n",
        "## 📚 Table of Contents\n",
        "\n",
        "1. [Tool Design Principles](#design-principles)\n",
        "2. [Calculator Tool](#calculator-tool)\n",
        "3. [Text Processing Tool](#text-tool)\n",
        "4. [Unit Converter Tool](#converter-tool)\n",
        "5. [Combining Tools](#combining-tools)\n",
        "6. [Best Practices](#best-practices)\n"
      ]
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