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Nullable property of returned complex object is listed as required which causes validation message in MCP Inspector

bugSomething isn't workingSomething isn't working

Status: Closed (completed).

#690 In modelcontextprotocol/csharp-sdk;

· by KenBrannigan was closed on Aug 8, 2025

2 comments

Respect DI while creating target object

Status: Closed (abandoned).

modelcontextprotocol/csharp-sdknumber 688

#688 In modelcontextprotocol/csharp-sdk;

· by dogukandemir was closed on Aug 8, 2025

· Review required

3

Make HTTP parameters (HEADER, URL etc.. available to endpoints)

enhancementNew feature or requestNew feature or request

Status: Closed (completed).

#680 In modelcontextprotocol/csharp-sdk;

· by bnneupart was closed on Aug 8, 2025

2 comments

mcpserver tool name Naming Convention

bugSomething isn't workingSomething isn't working

Status: Closed (completed).

#679 In modelcontextprotocol/csharp-sdk;

· by xujiesh0510 was closed on Aug 6, 2025

Fix NotSupportedException when returning IEnumerable<ContentBlock>

Status: Merged (completed).

modelcontextprotocol/csharp-sdknumber 675

#675 In modelcontextprotocol/csharp-sdk;

· by Copilot was closed on Aug 5, 2025

· Approved

· 10/10

4



Model does not send parameters if tool require multiple parameter.

bugSomething isn't workingSomething isn't working

Status: Closed (completed).

#674 In modelcontextprotocol/csharp-sdk;

· by ibhaar was closed on Aug 5, 2025

2 comments

NotSupportedException when returning an IEnumerable<ContentBlock>

Status: Closed (completed).

#673 In modelcontextprotocol/csharp-sdk;

· by asklar was closed on Aug 5, 2025

1

3 comments

Remove 'Sse' from AspNetCoreSseServer sample name

Status: Merged (completed).

modelcontextprotocol/csharp-sdknumber 665

#665 In modelcontextprotocol/csharp-sdk;

· by halter73 was closed on Aug 1, 2025

· Approved

· 11/11

Add an in-memory transport sample

Status: Merged (completed).

modelcontextprotocol/csharp-sdknumber 664

#664 In modelcontextprotocol/csharp-sdk;

· by stephentoub was closed on Aug 1, 2025

· Approved

· 7/7

2

Add call to local assembly internal tool program

Status: Closed (abandoned).

modelcontextprotocol/csharp-sdknumber 662

#662 In modelcontextprotocol/csharp-sdk;

· by tanglin19 was closed on Jul 31, 2025

· Review required

Stateless option not working as expected

bugSomething isn't workingSomething isn't working

Status: Closed (completed).

#660 In modelcontextprotocol/csharp-sdk;

· by Izelude was closed on Aug 1, 2025

2 comments

No Support DeepSeek Or QWen

Status: Closed (completed).

#658 In modelcontextprotocol/csharp-sdk;

· by tanglin19 was closed on Aug 5, 2025

2 comments

Enable developers to implement a custom OAuth authentication flow

enhancementNew feature or requestNew feature or request

Status: Closed (completed).

#655 In modelcontextprotocol/csharp-sdk;

· by mbuchberger1967 was closed on Jul 30, 2025

4 comments

use pre-registered client ID / secret for authentication

Status: Closed (completed).

#652 In modelcontextprotocol/csharp-sdk;

· by mbuchberger1967 was closed on Jul 30, 2025

1 comment

Server Exiting at startup

Status: Closed (completed).

#646 In modelcontextprotocol/csharp-sdk;

· by ajaykalra was closed on Jul 29, 2025

1 comment

Fix ResourceLinkBlock deserialization by adding missing "name" case

Status: Merged (completed).

modelcontextprotocol/csharp-sdknumber 645

#645 In modelcontextprotocol/csharp-sdk;

· by Copilot was closed on Jul 23, 2025

· Approved

· 10/10

6



Cannot deserialize ResourceLinkBlock

bugSomething isn't workingSomething isn't working

Status: Closed (completed).

#644 In modelcontextprotocol/csharp-sdk;

· by KrakerXyz was closed on Jul 23, 2025

1

Public API generator

Status: Closed (abandoned).

modelcontextprotocol/csharp-sdknumber 642

#642 In modelcontextprotocol/csharp-sdk;

· by Scooletz was closed on Jul 23, 2025

· Review required

· 0/7

3

tool name naming policy changed on preview3

enhancementNew feature or requestNew feature or request

Status: Closed (completed).

#632 In modelcontextprotocol/csharp-sdk;

· by vongzh was closed on Jul 17, 2025

5 comments

IdleTracking uses lists instead of SortedSet

Status: Merged (completed).

modelcontextprotocol/csharp-sdknumber 629

#629 In modelcontextprotocol/csharp-sdk;

· by Scooletz was closed on Jul 18, 2025

· Approved

· 4/7

6

Update MEAI version and add regression test for #601.

Status: Merged (completed).

modelcontextprotocol/csharp-sdknumber 628

#628 In modelcontextprotocol/csharp-sdk;

· by eiriktsarpalis was closed on Jul 16, 2025

· Approved

· 7/7

UnreferenceDisposable made slimmer

Status: Merged (completed).

modelcontextprotocol/csharp-sdknumber 627

#627 In modelcontextprotocol/csharp-sdk;

· by Scooletz was closed on Jul 18, 2025

· Approved

· 5/7

5

McpServerPrimitiveCollection ArgumentNullException

bugSomething isn't workingSomething isn't working

Status: Closed (completed).

#624 In modelcontextprotocol/csharp-sdk;

· by kevklam was closed on Jul 15, 2025

3 comments

How to manage Tool Call requests and response in context

Status: Not planned (skipped).

#620 In modelcontextprotocol/csharp-sdk;

· by rwoodley was closed on Jul 12, 2025

4 comments

Ensure IsExternalInit is type forwarded on NET builds

Status: Merged (completed).

modelcontextprotocol/csharp-sdknumber 619

#619 In modelcontextprotocol/csharp-sdk;

· by stephentoub was closed on Jul 14, 2025

· Approved

· 7/7