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SEP-1686: Tasks

enhancementNew feature or requestNew feature or request

Status: Closed (completed).

#943 In modelcontextprotocol/csharp-sdk;

· by mikekistler was closed on Jan 28, 2026

Add 2025-11-25 as supported version

enhancementNew feature or requestNew feature or request

Status: Closed (completed).

#1129 In modelcontextprotocol/csharp-sdk;

· by mikekistler was closed on Jan 15, 2026

Remove obsolete APIs from codebase

breaking-changeThis issue or PR introduces a breaking changeThis issue or PR introduces a breaking change

Status: Merged (completed).

modelcontextprotocol/csharp-sdknumber 985

#985 In modelcontextprotocol/csharp-sdk;

· by Copilot was closed on Dec 2, 2025

Add support for URL mode elicitation

Status: Merged (completed).

modelcontextprotocol/csharp-sdknumber 1021

#1021 In modelcontextprotocol/csharp-sdk;

· by halter73 was closed on Dec 5, 2025

SEP-991: Enable URL-based Client Registration using OAuth Client ID Metadata Documents

enhancementNew feature or requestNew feature or request

Status: Closed (completed).

#909 In modelcontextprotocol/csharp-sdk;

· by mikekistler was closed on Nov 26, 2025

SEP-1024: MCP Client Security Requirements for Local Server Installation

enhancementNew feature or requestNew feature or request

Status: Closed (completed).

#910 In modelcontextprotocol/csharp-sdk;

· by mikekistler was closed on Nov 18, 2025

SEP-1613: Establish JSON Schema 2020-12 as Default Dialect for MCP

enhancementNew feature or requestNew feature or request

Status: Closed (completed).

#912 In modelcontextprotocol/csharp-sdk;

· by mikekistler was closed on Oct 21, 2025

SEP-1034 : Support default values for all primitive types in elicitation schemas

enhancementNew feature or requestNew feature or request

Status: Closed (completed).

#908 In modelcontextprotocol/csharp-sdk;

· by mikekistler was closed on Oct 31, 2025

Implement SEP-973: Icons and metadata support

Status: Closed (completed).

#753 In modelcontextprotocol/csharp-sdk;

· by dsp-ant was closed on Oct 8, 2025

SEP-1577 - Sampling With Tools

enhancementNew feature or requestNew feature or request

Status: Closed (completed).

#952 In modelcontextprotocol/csharp-sdk;

· by mikekistler was closed on Nov 20, 2025

SEP-1319: Decouple Request Payload from RPC Methods Definition

enhancementNew feature or requestNew feature or request

Status: Closed (completed).

#911 In modelcontextprotocol/csharp-sdk;

· by mikekistler was closed on Nov 18, 2025

SEP-1036: Add support for URL Mode Elicitation for secure out-of-band interactions

Status: Closed (completed).

#750 In modelcontextprotocol/csharp-sdk;

· by mikekistler was closed on Dec 5, 2025

SEP-985: Align OAuth 2.0 Protected Resource Metadata with RFC 9728

enhancementNew feature or requestNew feature or request

Status: Closed (completed).

#773 In modelcontextprotocol/csharp-sdk;

· by ochafik was closed on Dec 5, 2025

SEP-1699: Support SSE polling via server-side disconnect

enhancementNew feature or requestNew feature or request

Status: Closed (completed).

#1020 In modelcontextprotocol/csharp-sdk;

· by mikekistler was closed on Jan 15, 2026

SEP-835: Enhance authorization flows with incremental scope consent via WWW-Authenticate (SEP-835)

enhancementNew feature or requestNew feature or request

Status: Closed (completed).

#907 In modelcontextprotocol/csharp-sdk;

· by mikekistler was closed on Jan 13, 2026

enhance auth server discovery with OAuth2 and OIDC metadata support

Status: Closed (completed).

#526 In modelcontextprotocol/csharp-sdk;

· by ihrpr was closed on Jul 4, 2025

SEP-1330: Elicitation Enum Schema Improvements and Standards Compliance

enhancementNew feature or requestNew feature or request

Status: Closed (completed).

#936 In modelcontextprotocol/csharp-sdk;

· by mikekistler was closed on Nov 20, 2025

SEP-986: Specify Format for Tool Names

enhancementNew feature or requestNew feature or request

Status: Closed (completed).

#935 In modelcontextprotocol/csharp-sdk;

· by mikekistler was closed on Nov 6, 2025

SEP-1303: Input Validation Errors as Tool Execution Errors

enhancementNew feature or requestNew feature or request

Status: Closed (completed).

#954 In modelcontextprotocol/csharp-sdk;

· by mikekistler was closed on Nov 17, 2025