Search results

[BUG] KeepAliveScheduler does not evict sessions after ping failure, causing unbounded CPU growth

Status: Open.

#1022 In modelcontextprotocol/java-sdk;

· lxq19991111 opened on Jun 11, 2026

[BUG] McpStreamableServerSession does not close server-side socket when client disconnects, causing CLOSE-WAIT leak and thread pool exhaustion

Status: Open.

#1021 In modelcontextprotocol/java-sdk;

· lxq19991111 opened on Jun 11, 2026

SEP-2663: Tasks Extension

enhancementNew feature or requestNew feature or request

extensionsWork relating to MCP extensions - see https://modelcontextprotocol.io/extensions/overviewWork relating to MCP extensions - see https://modelcontextprotocol.io/extensions/overview

P2Moderate issues affecting some users, edge cases, potentially valuable featureModerate issues affecting some users, edge cases, potentially valuable feature

Status: Open.

Enhancement

#1013 In modelcontextprotocol/java-sdk;

· localden opened on Jun 6, 2026

SEP-2577: Deprecate Roots, Sampling, and Logging

area/client

area/server

enhancementNew feature or requestNew feature or request

P1Significant bug affecting many users, highly requested featureSignificant bug affecting many users, highly requested feature

ready for workThe goal is clear and work towards it can be commencedThe goal is clear and work towards it can be commenced

Status: Open.

Enhancement

#1012 In modelcontextprotocol/java-sdk;

· localden opened on Jun 6, 2026

·  

2.1.0 Planning

SEP-2575: Make MCP Stateless

area/transport

enhancementNew feature or requestNew feature or request

P1Significant bug affecting many users, highly requested featureSignificant bug affecting many users, highly requested feature

Status: Open.

Enhancement

#1011 In modelcontextprotocol/java-sdk;

· localden opened on Jun 6, 2026

·  

3.x Planning

SEP-2567: Sessionless MCP via Explicit State Handles

area/transport

enhancementNew feature or requestNew feature or request

P1Significant bug affecting many users, highly requested featureSignificant bug affecting many users, highly requested feature

Status: Open.

Enhancement

#1010 In modelcontextprotocol/java-sdk;

· localden opened on Jun 6, 2026

·  

3.x Planning

SEP-2468: Recommend Issuer (iss) Parameter in MCP Auth Responses

area/authorization

enhancementNew feature or requestNew feature or request

P1Significant bug affecting many users, highly requested featureSignificant bug affecting many users, highly requested feature

ready for workThe goal is clear and work towards it can be commencedThe goal is clear and work towards it can be commenced

Status: Open.

Enhancement

#1008 In modelcontextprotocol/java-sdk;

· localden opened on Jun 6, 2026

SEP-2549: TTL for List Results

area/mcp-schema

enhancementNew feature or requestNew feature or request

P1Significant bug affecting many users, highly requested featureSignificant bug affecting many users, highly requested feature

ready for workThe goal is clear and work towards it can be commencedThe goal is clear and work towards it can be commenced

Status: Open.

Enhancement

#1009 In modelcontextprotocol/java-sdk;

· localden opened on Jun 6, 2026

·  

2.1.0 Planning

SEP-2352: Clarify authorization server binding and migration

area/authorization

enhancementNew feature or requestNew feature or request

P1Significant bug affecting many users, highly requested featureSignificant bug affecting many users, highly requested feature

ready for workThe goal is clear and work towards it can be commencedThe goal is clear and work towards it can be commenced

Status: Open.

Enhancement

#1007 In modelcontextprotocol/java-sdk;

· localden opened on Jun 6, 2026

SEP-2322: Multi Round-Trip Requests

area/mcp-schema

area/transport

enhancementNew feature or requestNew feature or request

P1Significant bug affecting many users, highly requested featureSignificant bug affecting many users, highly requested feature

Status: Open.

Enhancement

#1004 In modelcontextprotocol/java-sdk;

· localden opened on Jun 6, 2026

·  

3.x Planning

SEP-2260: Require Server requests to be associated with a Client request

area/client

enhancementNew feature or requestNew feature or request

P1Significant bug affecting many users, highly requested featureSignificant bug affecting many users, highly requested feature

Status: Open.

Enhancement

#1003 In modelcontextprotocol/java-sdk;

· localden opened on Jun 6, 2026

·  

3.x Planning

SEP-2106: Tools inputSchema & outputSchema Conform to JSON Schema 2020-12

enhancementNew feature or requestNew feature or request

Status: Open.

#1000 In modelcontextprotocol/java-sdk;

· localden opened on Jun 6, 2026