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enhancementNew feature or requestNew feature or request

P3Nice to haves, rare edge casesNice to haves, rare edge cases

ready for workHas enough information to startHas enough information to start

Status: Open.

#1314 In modelcontextprotocol/csharp-sdk;

· herbat73 opened on Feb 19, 2026

Add DeleteStreamsForSessionAsync to ISseEventStreamStore

enhancementNew feature or requestNew feature or request

P3Nice to haves, rare edge casesNice to haves, rare edge cases

ready for workHas enough information to startHas enough information to start

Status: Open.

#1287 In modelcontextprotocol/csharp-sdk;

· mikekistler opened on Feb 16, 2026

Provide notification of server connection loss

enhancementNew feature or requestNew feature or request

Status: Open.

#438 In modelcontextprotocol/csharp-sdk;

· AArnott opened on May 20, 2025

Stdio transport does not expose process exit code on server launch failure

P2Moderate issues, valuable feature requestsModerate issues, valuable feature requests

ready for workHas enough information to startHas enough information to start

Status: Open.

#1332 In modelcontextprotocol/csharp-sdk;

· hulumane opened on Feb 20, 2026

Add client completion notification and details

Status: Open (in progress).

modelcontextprotocol/csharp-sdknumber 1368

#1368 In modelcontextprotocol/csharp-sdk;

· stephentoub opened on Feb 24, 2026

<code>SseClientTransport.Endpoint</code> should be nullable when <code>HttpClient</code> is provided

enhancementNew feature or requestNew feature or request

P3Nice to haves, rare edge casesNice to haves, rare edge cases

ready for workHas enough information to startHas enough information to start

Status: Open.

#515 In modelcontextprotocol/csharp-sdk;

· aaronpowell opened on Jun 13, 2025

Auto-populate completion handlers from AllowedValuesAttribute on prompt/resource parameters

Status: Open (in progress).

modelcontextprotocol/csharp-sdknumber 1380

#1380 In modelcontextprotocol/csharp-sdk;

· Copilot opened on Feb 24, 2026