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Python: [BREAKING] Migrate MCP server hosting to MCP SDK v2 - #9234

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Jose Alvarez (jpalvarezl) wants to merge 36 commits into

microsoft:mainfrom

jpalvarezl:jpalvarezl-feature/mcp-v2-server-migration

Closed

Python: [BREAKING] Migrate MCP server hosting to MCP SDK v2#9234
Jose Alvarez (jpalvarezl) wants to merge 36 commits into
microsoft:mainfrom
jpalvarezl:jpalvarezl-feature/mcp-v2-server-migration

Commits on Oct 9, 2026
- Updated mcp to 2.x (websocket optional is part of the core now)
  Jose Alvarez (jpalvarezl)
  committed
  4f908ba
- Added client test for agents as mcp_servers
  Jose Alvarez (jpalvarezl)
  committed
  cc9f3b7
- More casing fixes
  Jose Alvarez (jpalvarezl)
  committed
  18b6bd8
- Unit tests for legacy and v2 MCP server
  Jose Alvarez (jpalvarezl)
  committed
  094451b
- Using MCPError in samples for consistency with internal behaviour
  Jose Alvarez (jpalvarezl)
  committed
  e8b2576
- Migrated test_mcp to use new types
  Jose Alvarez (jpalvarezl)
  committed
  715b13e
- collection for test_mcp
  Jose Alvarez (jpalvarezl)
  committed
  4def9db
- collection passes for test_mcp_observability and test_mcp_skills
  Jose Alvarez (jpalvarezl)
  committed
  c29b0d7
- Migrated message_handler
  Jose Alvarez (jpalvarezl)
  committed
  1026ff0
- deprecated MCPWebsocketTool
  Jose Alvarez (jpalvarezl)
  committed
  de60349
- deprecated MCPWebsocketTool, part 2
  Jose Alvarez (jpalvarezl)
  committed
  597c933
- documentation updates
  Jose Alvarez (jpalvarezl)
  committed
  f709ccf
- Removed MCP Tasks to start work on new mcp v2 API
  Jose Alvarez (jpalvarezl)
  committed
  2cda501
- Fix MCP v2 conversion error assertions
  Jose Alvarez (jpalvarezl)
  committed
  bccb9b9
- Moved transport setup to mcp.Client, added test for v2. Needs legacy check
  Jose Alvarez (jpalvarezl)
  committed
  9fd2352
- Added legacy handshake unit test
  Jose Alvarez (jpalvarezl)
  committed
  532217f
- Added tool/call mock and assertions
  Jose Alvarez (jpalvarezl)
  committed
  83ba8df
- Adjusted sampling capabilities test
  Jose Alvarez (jpalvarezl)
  committed
  d75b3d1
- removing ClientSession references in favour of using mcp.Client
  Jose Alvarez (jpalvarezl)
  committed
  5375420
- Assert preserve headers
  Jose Alvarez (jpalvarezl)
  committed
  29c20ff
- Added session negotiation tests
  Jose Alvarez (jpalvarezl)
  committed
  e0c11ea
- Sampling capabilities
  Jose Alvarez (jpalvarezl)
  committed
  d5fc5ac
- basic tools support completed
  Jose Alvarez (jpalvarezl)
  committed
  4759b47
- test cleanup
  Jose Alvarez (jpalvarezl)
  committed
  df06490
- Added support for ResourceLink for prompts
  Jose Alvarez (jpalvarezl)
  committed
  da61459
- Added MCP client as a private field, set usage precedence 1st mcp_client, 2nd raw session
  Jose Alvarez (jpalvarezl)
  committed
  089f7b3
- Prompt migrated to use mcp_client -> session
  Jose Alvarez (jpalvarezl)
  committed
  9cdadec
- Migrated list/tools and list/prompts
  Jose Alvarez (jpalvarezl)
  committed
  6bd5abd
- Made protocol seam explicit with _MCPConnection
  Jose Alvarez (jpalvarezl)
  committed
  3587d13
- Restore exact MCP v2 source tree
  Jose Alvarez (jpalvarezl)
  committed
  47b05bd
- Complete MCP 2.x client compatibility foundation
  Jose Alvarez (jpalvarezl)
  committed
  25c0929
- Fix MCP v2 CI typing compatibility
  Jose Alvarez (jpalvarezl)
  committed
  b2ededa
- Use httpx2 for MCP transport consumers
  Jose Alvarez (jpalvarezl)
  committed
  ee47e62
- Update declarative MCP lifecycle fixture
  Jose Alvarez (jpalvarezl)
  committed
  ccef57e
- Use httpx2 in declarative MCP sample
  Jose Alvarez (jpalvarezl)
  committed
  e3bf5ed
- Fix MCP optional import and timeout propagation
  Jose Alvarez (jpalvarezl)
  committed
  d029bb5

Commits

Commits on Oct 9, 2026