MCP Python SDK

Timeline

1. Oct 2, 2026 · Open-source release · 1 source
   modelcontextprotocol/python-sdk v2.3.0
   A few things behave differently, so skim these first:
2. Sep 7, 2026 · Open-source release · 1 source
   modelcontextprotocol/python-sdk v2.2.0
   HTTP client redirects are only followed within the endpoint's origin (#3397)
3. Sep 7, 2026 · Open-source release · 1 source
   modelcontextprotocol/python-sdk v1.30.0
   Maintenance release of the 1.x line.
4. Aug 26, 2026 · Open-source release · 1 source
   modelcontextprotocol/python-sdk v2.0.1
   One off backport of the FastMCP import warning for 2.0.x, this is due to a lot of people running into this error and making issues on other repos about it.
5. Aug 25, 2026 · Open-source release · 1 source
   modelcontextprotocol/python-sdk v2.1.1
6. Aug 24, 2026 · Open-source release · 1 source
   modelcontextprotocol/python-sdk v2.1.0
   Client accepts StdioServerParameters directly: Client(StdioServerParameters(command="uv", args=["run", "server.py"])) (#3321).
7. Aug 24, 2026 · Open-source release · 1 source
   modelcontextprotocol/python-sdk v1.29.1
8. Jul 28, 2026 · Open-source release · 1 source
   modelcontextprotocol/python-sdk v2.0.0
   MCP Python SDK v2 Stable Release
9. Jul 28, 2026 · Open-source release · 1 source
   modelcontextprotocol/python-sdk v1.29.0
10. Jul 27, 2026 · Open-source release · 1 source
    modelcontextprotocol/python-sdk v2.0.0rc1
    Pre-releases are opt-in only; pip install mcp still resolves to the stable 1.x line.
11. Jul 14, 2026 · Open-source release · 1 source
    modelcontextprotocol/python-sdk v2.0.0b2
    Pre-releases are opt-in only; pip install mcp still resolves to the stable 1.x line.
12. Jun 30, 2026 · Open-source release · 1 source
    modelcontextprotocol/python-sdk v2.0.0b1
    Pre-releases are opt-in only; pip install mcp still resolves to the stable 1.x line.
13. Jun 26, 2026 · Open-source release · 1 source
    modelcontextprotocol/python-sdk v1.28.1
14. Jun 26, 2026 · Open-source release · 1 source
    modelcontextprotocol/python-sdk v2.0.0a3
    Pre-releases are opt-in only; pip install mcp still resolves to the stable 1.x line.
15. Jun 16, 2026 · Open-source release · 1 source
    modelcontextprotocol/python-sdk v2.0.0a2
    Pre-releases are opt-in only; pip install mcp still resolves to the stable 1.x line.
16. Jun 16, 2026 · Open-source release · 1 source
    modelcontextprotocol/python-sdk v1.28.0
    The TypeScript SDK has likewise removed its WebSocket client for v2 (modelcontextprotocol/typescript-sdk#1783).
17. Jun 11, 2026 · Open-source release · 1 source
    modelcontextprotocol/python-sdk v2.0.0a1
    This is the first alpha of v2 of the MCP Python SDK.
18. May 29, 2026 · Open-source release · 1 source
    modelcontextprotocol/python-sdk v1.27.2
19. May 8, 2026 · Open-source release · 1 source
    modelcontextprotocol/python-sdk v1.27.1
20. Apr 2, 2026 · Open-source release · 1 source
    modelcontextprotocol/python-sdk v1.27.0

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