MCP Explained | What, Why and How

In this video CJ talks about MCP. What it is, why we need it, how to add tools to LLM clients and how to create and debug our own tools. 🔥 Be the ~14,700th person to join our super tasty newsletter https://bit.ly/syntax_snackpack 00:00 Intro 00:30 Everything is Inputs and Outputs 01:55 How LLMs are Created 03:06 LLM Context In Commercial Services 04:29 LLMs are Static 04:54 List of Tools as Context 05:17 LLM Tool Calls 07:42 The LLM Loop 08:27 What is MCP? 09:40 Weather MCP Server Example 12:12 Building MCP Servers with SDKs 13:51 Weather MCP Server Code Walkthrough 17:45 Local MCP Servers with stdio 20:34 Remote MCP Servers 24:34 Debugging and Inspecting MCP Servers 29:03 Awesome MCP Servers 29:36 MCP Recap 29:56 MCP Servers in Cursor 30:23 context7 MCP Server 33:18 MCP Servers In VS Code Github Co-Pilot (FREE) 34:47 MCP Server Setup in Gemini CLI (FREE) 36:25 Web Scraping and Undocumented APIs in MCP Servers 38:01 MCP Client Support 38:51 Sentry MCP Server 42:18 Thanks! Model Context Protocl | https://modelcontextprotocol.io/ MCP TypeScript SDK | https://github.com/modelcontextprotocol/typescript-sdk Currency Conversion MCP Server | https://github.com/wesbos/currency-conversion-mcp Claude MCP with NVM | https://gist.github.com/cognivator/ceca5a68d696b0575962ff3d18c31aa5 MCP Debugger / Inspector | https://github.com/modelcontextprotocol/inspector Awesome MCP Servers | https://github.com/punkpeye/awesome-mcp-servers context7 MCP Server | https://context7.com/ Sentry MCP Server | https://docs.sentry.io/product/sentry-mcp/ MCP Client Feature Support Matrix | https://modelcontextprotocol.io/clients#feature-support-matrix ------------------------------------------------------------------------------ Hit us up on Socials! Syntax: https://x.com/syntaxfm Scott: https://x.com/stolinski Wes: https://x.com/wesbos CJ: https://x.com/CodingGarden Randy: https://www.youtube.com/@randyrektor http://www.syntax.fm Brought to you by Sentry.io #webdevelopment #webdeveloper #javascript #syntax #syntaxfm #webdev