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Rename FastMCP to MCPServer and restructure constructor #1732

Description

@maxisbey

Summary

Rename FastMCP to MCPServer (or similar) and restructure so that transport-specific options are passed to run() rather than the constructor.

Motivation

  • The name "FastMCP" was inherited from the original external project but doesn't clearly convey what it is
  • The constructor currently accepts many HTTP-specific options (host, port, stateless_http, etc.) that only apply when running with a specific transport
  • This couples server definition with transport configuration
  • Users are confused about the relationship between FastMCP v2 (external library) and FastMCP in the official SDK (see FastMCP 2.0 vs MCP Python SDK Server #1068)

Goal

  • Clear, descriptive name for the high-level server class
  • Constructor focused on server identity and capabilities
  • Transport-specific options moved to run() or transport configuration
  • Document the relationship between FastMCP v2 (external library) and the official MCP Python SDK

Consolidates


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P1Significant bug affecting many users, highly requested featurebreaking changeWill break existing deployments when updated without changesenhancementRequest for a new feature that's not currently supportedv2Ideas, requests and plans for v2 of the SDK which will incorporate major changes and fixes

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