What Is a “Tool” in MCP (And Why It Matters More Than You Think)

Now that we understand what MCP is, let’s focus on the most important concept: Tools If MCP is the system, tools are what make it useful . 🧠 Simple Definition A tool is: A structured action that the model can choose to perform. In simple terms: 👉 If the model wants to do something , it uses a tool. ⚠️ Important Clarification A tool is not just a function . It’s a function with: a clear name a clear purpose defined inputs This structure is what allows the model to understand and use it. 🧩 What