Tutorial-Codebase-Knowledge/docs/MCP Python SDK/index.md

Tutorial: MCP Python SDK

The MCP Python SDK helps developers build applications (clients and servers) that talk to each other using the Model Context Protocol (MCP) specification. It simplifies communication by handling the low-level details like standard message formats (Abstraction 0), connection sessions (Abstraction 1), and different ways to send/receive data (transports, Abstraction 2). It also provides a high-level framework, FastMCP (Abstraction 3), making it easy to create servers that expose tools (Abstraction 5), resources (Abstraction 4), and prompts (Abstraction 6) to clients. The SDK includes command-line tools (Abstraction 8) for running and managing these servers.

Source Repository: https://github.com/modelcontextprotocol/python-sdk/tree/d788424caa43599de38cee2f70233282d83e3a34/src/mcp

flowchart TD
    A0["MCP Protocol Types"]
    A1["Client/Server Sessions"]
    A2["Communication Transports"]
    A3["FastMCP Server"]
    A4["FastMCP Resources"]
    A5["FastMCP Tools"]
    A6["FastMCP Prompts"]
    A7["FastMCP Context"]
    A8["CLI"]
    A1 -- "Uses MCP Types" --> A0
    A1 -- "Operates Over Transport" --> A2
    A2 -- "Serializes/Deserializes MCP..." --> A0
    A3 -- "Uses Session Logic" --> A1
    A3 -- "Manages Resources" --> A4
    A3 -- "Manages Tools" --> A5
    A3 -- "Manages Prompts" --> A6
    A8 -- "Runs/Configures Server" --> A3
    A5 -- "Handlers Can Use Context" --> A7
    A4 -- "Handlers Can Use Context" --> A7
    A7 -- "Provides Access To Session" --> A1
    A7 -- "Provides Access To Server" --> A3

Chapters

1. CLI (mcp command)
2. FastMCP Server (FastMCP)
3. FastMCP Resources (Resource, ResourceManager)
4. FastMCP Tools (Tool, ToolManager)
5. FastMCP Prompts (Prompt, PromptManager)
6. FastMCP Context (Context)
7. MCP Protocol Types
8. Client/Server Sessions (ClientSession, ServerSession)
9. Communication Transports (Stdio, SSE, WebSocket, Memory)

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