Add a client extension API - #3034

Merged

maxisbey merged 15 commits into

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client-extensions

Jun 30, 2026

Commits on Jun 30, 2026

Add client extension declaration vocabulary
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c2cf4ed
Support vendor request types in ClientSession.send_request
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c4cfebd
Snapshot extension validation messages instead of matching substrings
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a9edb2d
Pin preconnect and absent-params arms of the Mcp-Name delta
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9de9e44
Fold result claims and notification bindings into ClientSession
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c73a27f
Harden claim and binding construction invariants
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414caef
Fold ClientExtension instances into Client
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0f85f31
Refine extension fold errors and pin read-once for all declarations
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1084616
Document client extensions and prove the loop in the interaction suite
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be8e160
Claimed shapes carry vendor fields verbatim; say so honestly
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02b8519
Move the identifier grammar matrix to the shared test home
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616e81b
Fix core-arm sentinel collision and close binding queues on every exit
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15ff3c2
Tighten comments and docstrings across the extension surface
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8157846
Address review feedback on claim construction and notification ordering
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99fec3c
Check every alias form when reserving core surface wire keys
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53a538a