Issues

• Highlight community projects

  enhancement
  modelcontextprotocol/csharp-sdk#1992 · Filter by author CristianBarragan opened on Nov 5, 2026 · Future

• Stdio client on Windows: dispose returns before the server tree exits, and a request sent during dispose never completes

  enhancementP3
  modelcontextprotocol/csharp-sdk#1894 · Filter by author MarcelRoozekrans opened on Sep 27, 2026
  2

• MCP Client: Add bounded connection-establishment recovery with end-to-end timeout and closure guarantees

  enhancement
  modelcontextprotocol/csharp-sdk#1879 · Filter by author anushree1808 opened on Sep 16, 2026

• MCP Protocol-Version Ceiling for the C# Client SDK

  enhancement
  modelcontextprotocol/csharp-sdk#1868 · Filter by author anushree1808 opened on Sep 11, 2026
  1

• Configure McpServerToolCreateOptions via WithTools

  enhancement
  modelcontextprotocol/csharp-sdk#1865 · Filter by author adrianm64 opened on Sep 9, 2026
  3

• Add a stable server-side MCP Task execution extension point

  enhancementP2ready for work
  modelcontextprotocol/csharp-sdk#1820 · Filter by author cecilphillip opened on Aug 16, 2026
  5

• Support the OAuth 2.0 Device Authorization Grant (RFC 8628) for headless clients

  area-authenhancement
  modelcontextprotocol/csharp-sdk#1811 · Filter by author Aaronontheweb opened on Aug 11, 2026
  1

• Wire up the three new auth conformance scenarios from

  area-authenhancementP3ready for work
  modelcontextprotocol/csharp-sdk#1770 · Filter by author AkbarDizaji opened on Jul 29, 2026 · 2.x
  2

  

• Define handling for protocol-incompatible result properties set by applications

  enhancementP2ready for work
  modelcontextprotocol/csharp-sdk#1754 · Filter by author halter73 opened on Jul 27, 2026 · 2.x
  1

• Document the Windows cmd.exe /c interposition as a security-relevant property, not just a quoting bug

  documentationenhancementP2ready for work
  modelcontextprotocol/csharp-sdk#1751 · Filter by author anorboev opened on Jul 27, 2026 · 2.x
  2

  

• Provide extensions for calling McpClientTools as tasks

  enhancementP3ready for work
  modelcontextprotocol/csharp-sdk#1730 · Filter by author KubaZ2 opened on Jul 24, 2026 · 2.x
  3

• Deterministically cancel background task-store runners on server disposal via a server-lifetime CTS

  bugenhancementP2ready for work
  modelcontextprotocol/csharp-sdk#1707 · Filter by author PranavSenthilnathan opened on Jul 16, 2026 · 2.x
  1

  

• Make server extension handlers composable with filters and subscriptions

  enhancementP2ready for work
  modelcontextprotocol/csharp-sdk#1704 · Filter by author halter73 opened on Jul 14, 2026 · 2.x
  4

  

• Add prior-knowledge connection path for modern protocol clients

  enhancementneeds confirmationP2
  modelcontextprotocol/csharp-sdk#1696 · Filter by author halter73 opened on Jul 8, 2026 · 2.x

• Optional exception summarization for server-side logging

  enhancementP3ready for work
  modelcontextprotocol/csharp-sdk#1690 · Filter by author crhaglun opened on Jul 6, 2026 · 2.x
  4

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

  area-testsenhancementP2
  modelcontextprotocol/csharp-sdk#1653 · Filter by author halter73 opened on Jun 16, 2026 · 2.x
  

• MCP Apps: Add [McpAppResource] attribute and resource-collection processing in WithMcpApps()

  enhancementP3ready for work
  modelcontextprotocol/csharp-sdk#1636 · Filter by author mikekistler opened on Jun 9, 2026 · 2.x
  1

• Restore [McpServerTool] composability with MRTR input requests + tasks

  enhancementP2ready for work
  modelcontextprotocol/csharp-sdk#1635 · Filter by author halter73 opened on Jun 8, 2026 · 2.x
  1

• Identity Assertion Grant flow only supports OIDC ID tokens, not SAML 2.0 assertions

  area-authenhancementP3ready for work
  modelcontextprotocol/csharp-sdk#1618 · Filter by author halter73 opened on Jun 1, 2026 · 2.x
  1

• Cached-credential reuse via ClientOAuthOptions.ClientId fails: no way to specify token_endpoint_auth_method

  area-authenhancementP3ready for work
  modelcontextprotocol/csharp-sdk#1611 · Filter by author mukunku opened on May 29, 2026 · 2.x
  1

  

• MCP Apps: Add ergonomic WithAppTool helper to reduce wiring boilerplate

  enhancementP3ready for work
  modelcontextprotocol/csharp-sdk#1607 · Filter by author mikekistler opened on May 28, 2026 · 2.x
  1

• McpServerToolCreateOptions miss MarshalResult option.

  enhancementP2ready for work
  modelcontextprotocol/csharp-sdk#1602 · Filter by author truelife2 opened on May 26, 2026 · 2.x
  2

• Option to support declarative tool registration activated by version (e.g. "beta")

  enhancementP3ready for work
  modelcontextprotocol/csharp-sdk#1557 · Filter by author CharlieDigital opened on May 2, 2026 · 2.x
  2

• [Documentation request] Authentication architecture suggestions

  documentationenhancementP3ready for work
  modelcontextprotocol/csharp-sdk#1494 · Filter by author hansmbakker opened on Apr 2, 2026 · 2.x
  4

• Documentation slightly hard to find

  documentationenhancementP3ready for work
  modelcontextprotocol/csharp-sdk#1493 · Filter by author hansmbakker opened on Apr 2, 2026 · 2.x
  3