Issues · modelcontextprotocol/csharp-sdk · GitHub

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Support server→client streaming (subscriptions/listen fan-out) over stateless Streamable HTTP

#1662

· halter73 opened

on Jun 18, 2026

Flaky test: `TaskPollStuckDetectorTests.CallToolAsync_TaskStuckInInputRequired_WithoutNewRequests_ThrowsAfterThreshold`

#1661

· halter73 opened

on Jun 17, 2026

Add NativeAOT publish coverage for ModelContextProtocol.Extensions.Apps

#1659

· halter73 opened

on Jun 17, 2026

ClientOAuthProvider throws "Client ID is not available" on cold start when a refresh token is persisted but client ID is not

#1658

· KirillOsenkov opened

on Jun 17, 2026

Renumber draft error codes to follow spec PR #2907 (-32020/-32021/-32022)

#1657

· halter73 opened

on Jun 17, 2026

Upstream conformance harness: http-custom-headers tests float x-mcp-header (forbidden by SEP-2243)

#1655

· halter73 opened

on Jun 16, 2026

Conformance Track B: stateful HTTP/stdio modes, SEP-2549 absence-assert, remaining MRTR scenarios

#1653

· halter73 opened

on Jun 16, 2026

Draft follow-up tidy-ups: configurable stdio probe timeout + IsStatefulSession/IsMrtrSupported gate review

#1652

· halter73 opened

on Jun 16, 2026

Warn (don't throw) on the client when a draft-protocol server omits required SEP-2549 ttlMs/cacheScope

#1650

· tarekgh opened

on Jun 15, 2026

Race condition in InMemoryTaskStore causes flaky test failures

#1648

· halter73 opened

on Jun 12, 2026

Add optional client-side caching that honors SEP-2549 ttlMs/cacheScope

#1646

· tarekgh opened

on Jun 12, 2026

Surface SEP-2549 caching hints (ttlMs/cacheScope) on the auto-paginating list overloads

#1645

· tarekgh opened

on Jun 12, 2026