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| og:image:alt | Port of #1994 (v1.x) to main.
Motivation and Context
Sessions created via StreamableHTTPSessionManager persist indefinitely in _server_instances even after the client disconnects, leaking memory ov... |
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Feb 9, 2026
| https://github.com/modelcontextprotocol/python-sdk/pull/2022#ref-pullrequest-3897732356 |
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feat: add idle timeout for StreamableHTTP sessions
#1994
| https://github.com/modelcontextprotocol/python-sdk/pull/1994 |
| https://github.com/felixweinberger |
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| c8e7443 | https://github.com/modelcontextprotocol/python-sdk/commit/c8e7443e3c0b162f4cfb0784c12b3c9bb77a8edc |
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Compare
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| February 16, 2026 12:23 | https://github.com/modelcontextprotocol/python-sdk/pull/2022#event-22823837409 |
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| https://github.com/felixweinberger |
| Add idle session timeout to StreamableHTTPSessionManager | https://github.com/modelcontextprotocol/python-sdk/pull/2022/commits/96f363b69c64bcdbf9f80f7c3a0a1e79b7889f36 |
| 96f363b | https://github.com/modelcontextprotocol/python-sdk/pull/2022/commits/96f363b69c64bcdbf9f80f7c3a0a1e79b7889f36 |
| #1283 | https://github.com/modelcontextprotocol/python-sdk/issues/1283 |
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Compare
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| February 16, 2026 12:47 | https://github.com/modelcontextprotocol/python-sdk/pull/2022#event-22824403725 |
| https://github.com/felixweinberger |
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| 482ff78 | https://github.com/modelcontextprotocol/python-sdk/commit/482ff78ce6fd7b0a68f5f875f6194fe3b2c72914 |
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Compare
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| February 16, 2026 12:57 | https://github.com/modelcontextprotocol/python-sdk/pull/2022#event-22824661713 |
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| https://github.com/felixweinberger |
| Address review feedback: docstring formatting, test reorganization | https://github.com/modelcontextprotocol/python-sdk/pull/2022/commits/8aef0396bb3684eaa66b7236c77694c5bb799270 |
| 8aef039 | https://github.com/modelcontextprotocol/python-sdk/pull/2022/commits/8aef0396bb3684eaa66b7236c77694c5bb799270 |
| #1283 | https://github.com/modelcontextprotocol/python-sdk/issues/1283 |
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Compare
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| February 16, 2026 13:00 | https://github.com/modelcontextprotocol/python-sdk/pull/2022#event-22824720037 |
| https://github.com/felixweinberger |
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| February 16, 2026 13:03 | https://github.com/modelcontextprotocol/python-sdk/pull/2022#event-22824807128 |
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| 215a2d4 | https://github.com/modelcontextprotocol/python-sdk/commit/215a2d4830e71ad773922a1edd9ed38fe52ac843 |
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Compare
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| February 16, 2026 15:46 | https://github.com/modelcontextprotocol/python-sdk/pull/2022#event-22829158792 |
| https://github.com/maxisbey |
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Feb 16, 2026
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View reviewed changes
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| February 16, 2026 15:51 | https://github.com/modelcontextprotocol/python-sdk/pull/2022#event-22829281265 |
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| https://github.com/felixweinberger |
| Address latest review feedback | https://github.com/modelcontextprotocol/python-sdk/pull/2022/commits/2721c9ba6bb59e4e60cf55cbace10400372c140e |
| 2721c9b | https://github.com/modelcontextprotocol/python-sdk/pull/2022/commits/2721c9ba6bb59e4e60cf55cbace10400372c140e |
| #1283 | https://github.com/modelcontextprotocol/python-sdk/issues/1283 |
| https://github.com/felixweinberger |
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| force-pushed | https://github.com/modelcontextprotocol/python-sdk/compare/2e8d1ab97ad71c3eb5b1d61bd2321902a936feaf..2721c9ba6bb59e4e60cf55cbace10400372c140e |
| 2e8d1ab | https://github.com/modelcontextprotocol/python-sdk/commit/2e8d1ab97ad71c3eb5b1d61bd2321902a936feaf |
| 2721c9b | https://github.com/modelcontextprotocol/python-sdk/commit/2721c9ba6bb59e4e60cf55cbace10400372c140e |
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Compare
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| February 16, 2026 15:59 | https://github.com/modelcontextprotocol/python-sdk/pull/2022#event-22829497458 |
| https://github.com/felixweinberger |
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| February 16, 2026 16:11 | https://github.com/modelcontextprotocol/python-sdk/pull/2022#event-22829777761 |
| https://github.com/felixweinberger |
| felixweinberger | https://github.com/felixweinberger |
| February 16, 2026 16:11 | https://github.com/modelcontextprotocol/python-sdk/pull/2022#event-22829781676 |
| https://github.com/felixweinberger |
| felixweinberger | https://github.com/felixweinberger |
| February 18, 2026 10:34 | https://github.com/modelcontextprotocol/python-sdk/pull/2022#event-22880072664 |
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| https://github.com/felixweinberger |
| Merge branch 'main' into fweinberger/idle-timeout-termination-main | https://github.com/modelcontextprotocol/python-sdk/pull/2022/commits/b63fa4a0001b87a0b495f0ef95ff557131ecd559 |
| b63fa4a | https://github.com/modelcontextprotocol/python-sdk/pull/2022/commits/b63fa4a0001b87a0b495f0ef95ff557131ecd559 |
| https://github.com/felixweinberger |
| felixweinberger | https://github.com/felixweinberger |
| Kludex | https://github.com/Kludex |
| Kludex | https://github.com/Kludex |
| February 18, 2026 10:35 | https://github.com/modelcontextprotocol/python-sdk/pull/2022#event-22880082324 |
| https://github.com/Kludex |
| Kludex | https://github.com/Kludex |
|
Feb 18, 2026
| https://github.com/modelcontextprotocol/python-sdk/pull/2022#pullrequestreview-3819114900 |
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View reviewed changes
| https://github.com/modelcontextprotocol/python-sdk/pull/2022/files/b63fa4a0001b87a0b495f0ef95ff557131ecd559 |
| https://github.com/felixweinberger |
| felixweinberger | https://github.com/felixweinberger |
| 92140e5 | https://github.com/modelcontextprotocol/python-sdk/commit/92140e508663680dea629e192d1db64e1debdfaa |
| Feb 18, 2026 | https://github.com/modelcontextprotocol/python-sdk/pull/2022#event-22880391801 |
| Please reload this page | https://github.com/modelcontextprotocol/python-sdk/pull/2022 |
| https://github.com/felixweinberger |
| felixweinberger | https://github.com/felixweinberger |
| February 18, 2026 10:47 | https://github.com/modelcontextprotocol/python-sdk/pull/2022#event-22880393116 |
| https://github.com/abhijeethp |
| abhijeethp | https://github.com/abhijeethp |
|
Mar 7, 2026
| https://github.com/modelcontextprotocol/python-sdk/pull/2022#ref-pullrequest-4039366420 |
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fix(fastmcp): add session_idle_timeout parameter to prevent unbounded session memory growth
PrefectHQ/fastmcp#3443
| https://github.com/PrefectHQ/fastmcp/pull/3443 |
| https://github.com/koic |
| koic | https://github.com/koic |
|
Mar 23, 2026
| https://github.com/modelcontextprotocol/python-sdk/pull/2022#ref-pullrequest-4122202314 |
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Support session expiry controls for StreamableHTTPTransport
modelcontextprotocol/ruby-sdk#268
| https://github.com/modelcontextprotocol/ruby-sdk/pull/268 |
| koic | https://github.com/koic |
|
Mar 29, 2026
| https://github.com/modelcontextprotocol/python-sdk/pull/2022#ref-commit-49fc501 |
|
| https://github.com/koic |
| Support session expiry controls for StreamableHTTPTransport | https://github.com/modelcontextprotocol/ruby-sdk/commit/49fc501abc12ea3dd5bcd9ad134d1ad31b601996 |
| 49fc501 | https://github.com/modelcontextprotocol/ruby-sdk/commit/49fc501abc12ea3dd5bcd9ad134d1ad31b601996 |
| https://modelcontextprotocol.io/specification/latest/basic/security_best_practices#session-hijacking | https://modelcontextprotocol.io/specification/latest/basic/security_best_practices#session-hijacking |
| modelcontextprotocol/python-sdk#2022 | https://github.com/modelcontextprotocol/python-sdk/pull/2022 |
| #265 | https://github.com/modelcontextprotocol/ruby-sdk/issues/265 |
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session_idle_timeout is not exposed via streamable_http_app() and can cancel active requests
#2455
| https://github.com/modelcontextprotocol/python-sdk/issues/2455 |
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fix(streamable-http): expose session_idle_timeout and pause idle reaping during active requests
#2457
| https://github.com/modelcontextprotocol/python-sdk/pull/2457 |
| https://github.com/Bartok9 |
| Bartok9 | https://github.com/Bartok9 |
|
Jun 15, 2026
| https://github.com/modelcontextprotocol/python-sdk/pull/2022#ref-pullrequest-4662522380 |
|
fix(server): expose session_idle_timeout via streamable_http_app() and pause reaping during active requests
#2874
| https://github.com/modelcontextprotocol/python-sdk/pull/2874 |
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maxisbey
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| https://github.com/modelcontextprotocol/python-sdk/pull/2022/files/7f4e2ae1d6efb0c08701ac3095bbc8cf9b311daa |
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Kludex
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| https://github.com/modelcontextprotocol/python-sdk/pull/2022/files/b63fa4a0001b87a0b495f0ef95ff557131ecd559 |
| Please reload this page | https://github.com/modelcontextprotocol/python-sdk/pull/2022 |
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