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| og:image:alt | Motivation and Context
The draft spec removed the initialize handshake (SEP-2575). For stdio, the backward-compatibility text told clients to fall back to the legacy initialize handshake only when ... |
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| Remove mentioning of deprecated features | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2844/commits/d4d22d49fec843c15c2cf762d565e9bbe5ac1157 |
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| Fix stdio legacy-fallback rule and add compatibility matrix | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2844/commits/d382151c47d8492e6d07f8975d4ae771e31ed0c7 |
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| Tighten wording in lifecycle backward-compatibility section | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2844/commits/bc4eac7e15165e4d7e0243140f00abe925afcc8b |
| bc4eac7 | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2844/commits/bc4eac7e15165e4d7e0243140f00abe925afcc8b |
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| Replace em-dashes with plain punctuation in new spec text | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2844/commits/105a4191164154e9971aa5c33165a066ab82be8d |
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Jun 2, 2026
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2844#ref-pullrequest-4573270024 |
|
Restructure draft transport documentation
#2845
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2845 |
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Jun 3, 2026
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2844#ref-pullrequest-4579272830 |
|
Rename Lifecycle to Versioning and Compatibility
#2850
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2850 |
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| Restructure draft transport documentation ( | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2844/commits/79df95767415ce8dc954e2245107e5d35b04ab18 |
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| June 3, 2026 16:12 | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2844#event-26295625905 |
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Jun 3, 2026
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View reviewed changes
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Jun 5, 2026
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2844#ref-pullrequest-4594326513 |
|
(chore): sep-to-spec consistency pass
#2863
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