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v1.9.0

Protocol Version Update

Now the latest protocol version for Python SDK is 2025-03-26

What's Changed

• Fix typo in authentication section of README by @​mopg in modelcontextprotocol/python-sdk#676
• fix: 204 is an acceptable response to DELETEing the session by @​nbarbettini in modelcontextprotocol/python-sdk#697
• Minor tweaks to README for Streamable HTTP by @​evalstate in modelcontextprotocol/python-sdk#690
• Properly infer prefix for SSE messages by @​jlowin in modelcontextprotocol/python-sdk#659
• Simple Auth Example to use shttp in addition to sse by @​ihrpr in modelcontextprotocol/python-sdk#695
• Create ClientSessionGroup for managing multiple session connections. by @​mkeid in modelcontextprotocol/python-sdk#639
• fix typo: server has get_context attribute instead of request_context. by @​shimizukawa in modelcontextprotocol/python-sdk#446
• docs: clarify LLM API configuration in mcp_simple_chatbot README by @​ddltn in modelcontextprotocol/python-sdk#487
• fix: Add checks and better error messages on server object for mcp run by @​john0312 in modelcontextprotocol/python-sdk#297
• Fix hanging on streams when stdio_client exiting by @​LionNatsu in modelcontextprotocol/python-sdk#559
• feat: add message to ProgressNotification by @​aksheyd in modelcontextprotocol/python-sdk#435
• Update CI configuration to support multiple OS environments by @​DanielAvdar in modelcontextprotocol/python-sdk#708
• feat: add cursor pagination support to all client list methods by @​jerome3o-anthropic in modelcontextprotocol/python-sdk#718
• Add example for stateless server with JSON response by @​5enxia in modelcontextprotocol/python-sdk#704
• Include server examples folder in pyright check by @​ihrpr in modelcontextprotocol/python-sdk#667
• Set 2025-03-26 as the latest protocol version by @​ihrpr in modelcontextprotocol/python-sdk#719
• Fix example for multiple stateless servers by @​ihrpr in modelcontextprotocol/python-sdk#720
• fix: Update @​mcp.resource to use function documentation as default descrip… by @​jingyugao in modelcontextprotocol/python-sdk#489
• Add progress notification callback for client by @​ihrpr in modelcontextprotocol/python-sdk#721
• Servers to accept older versions of client by @​ihrpr in modelcontextprotocol/python-sdk#722

New Contributors

• @​mopg made their first contribution in modelcontextprotocol/python-sdk#676
• @​nbarbettini made their first contribution in modelcontextprotocol/python-sdk#697
• @​jlowin made their first contribution in modelcontextprotocol/python-sdk#659
• @​mkeid made their first contribution in modelcontextprotocol/python-sdk#639
• @​shimizukawa made their first contribution in modelcontextprotocol/python-sdk#446
• @​ddltn made their first contribution in modelcontextprotocol/python-sdk#487
• @​LionNatsu made their first contribution in modelcontextprotocol/python-sdk#559
• @​aksheyd made their first contribution in modelcontextprotocol/python-sdk#435
• @​DanielAvdar made their first contribution in modelcontextprotocol/python-sdk#708
• @​5enxia made their first contribution in modelcontextprotocol/python-sdk#704
• @​jingyugao made their first contribution in modelcontextprotocol/python-sdk#489

Full Changelog: https://github.com/modelcontextprotocol/python-sdk/compare/v1.8.1...v1.9.0

v1.8.1

What's Changed

• Fix streamable http sampling by @​ihrpr in modelcontextprotocol/python-sdk#693

Full Changelog: https://github.com/modelcontextprotocol/python-sdk/compare/v1.8.0...v1.8.1

v1.8.0

... (truncated)

• 6353dd1 Servers to accept older versions of client (#722)
• 5d33861 Add progress notification callback for client (#721)
• 1bdeed3 fix: Update @​mcp.resource to use function documentation as default descrip… (...
• c2f8730 Fix example for multiple stateless servers (#720)
• 13f0182 Set 2025-03-26 as the latest protocol version (#719)
• b3fbee9 Include server examples folder in pyright check (#667)
• 0a388b6 Add example for stateless server with JSON response (#704)
• a00b20a feat: add cursor pagination support to all client list methods (#718)
• b8f7b02 Update CI configuration to support multiple OS environments (#708)
• 9e66f7c feat: add message to ProgressNotification (#435)
• Additional commits viewable in compare view

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