MCP
The Model Context Protocol is an open standard for connecting AI apps to tools and data. Build an MCP server once, use it from any MCP client.
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Analogy
USB-C for AI tools. Before it, every app needed its own custom cable for every tool.
In an agent
Expose your agent's tools as an MCP server (@modelcontextprotocol/sdk) and Claude Desktop, IDEs or your own agent can all use them.
Practice
Flashcards
- What is MCP?An open protocol to plug tools and data into any AI app.
- Interview: what do you gain by exposing tools over MCP?Write the tools once; any MCP client (Claude Desktop, IDEs, your own agent) can use them.
Interview questions
- What is MCP?
- An open protocol that standardizes how AI apps connect to tools and data.
- Expose tools once as an MCP server.
- Any MCP client can use them: Claude Desktop, IDEs, or your own agent.
Questions people ask
What is MCP, the Model Context Protocol?
MCP is an open standard for connecting AI apps to tools and data. You build an MCP server once that exposes your tools, and any MCP client, such as Claude Desktop, an IDE or your own agent, can use them. It works like USB-C for AI tools: one plug instead of a custom cable per app.
How do I expose my agent's tools over MCP in TypeScript?
Use the official @modelcontextprotocol/sdk package to create an MCP server and register each tool with a name, description and input schema, plus the function that runs it. Your existing tool functions can be reused as they are. Any MCP client can then discover and call them.