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OpenSep 15, 2026
No due date
•Last updated Main goals:
- 2026-07-28 spec implementation.
Formerly categorized as 3.0
21% complete
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0 of 18 selected 0 issues of 18 selected
SEP-2575: Make MCP Stateless
enhancementNew feature or requestNew feature or requestP1Significant bug affecting many users, highly requested featureSignificant bug affecting many users, highly requested featureStatus: Open.#1011 In modelcontextprotocol/java-sdk;SEP-2567: Sessionless MCP via Explicit State Handles
enhancementNew feature or requestNew feature or requestP1Significant bug affecting many users, highly requested featureSignificant bug affecting many users, highly requested featureStatus: Open.#1010 In modelcontextprotocol/java-sdk;SEP-2322: Multi Round-Trip Requests
enhancementNew feature or requestNew feature or requestP1Significant bug affecting many users, highly requested featureSignificant bug affecting many users, highly requested featureStatus: Open.#1004 In modelcontextprotocol/java-sdk;SEP-2260: Require Server requests to be associated with a Client request
enhancementNew feature or requestNew feature or requestP1Significant bug affecting many users, highly requested featureSignificant bug affecting many users, highly requested featureStatus: Open.#1003 In modelcontextprotocol/java-sdk;Support extensions SEP-2133
enhancementNew feature or requestNew feature or requestP1Significant bug affecting many users, highly requested featureSignificant bug affecting many users, highly requested featureStatus: Open.#785 In modelcontextprotocol/java-sdk;SEP-2243: HTTP Header Standardization for Streamable HTTP Transport
enhancementNew feature or requestNew feature or requestP1Significant bug affecting many users, highly requested featureSignificant bug affecting many users, highly requested featureStatus: Open.#990 In modelcontextprotocol/java-sdk;SEP-1865: MCP Apps - Interactive User Interfaces for MCP
enhancementNew feature or requestNew feature or requestextensionsWork relating to MCP extensions - see https://modelcontextprotocol.io/extensions/overviewWork relating to MCP extensions - see https://modelcontextprotocol.io/extensions/overviewP2Moderate issues affecting some users, edge cases, potentially valuable featureModerate issues affecting some users, edge cases, potentially valuable featureStatus: Open.#999 In modelcontextprotocol/java-sdk;SEP-2106: Tools inputSchema & outputSchema Conform to JSON Schema 2020-12
enhancementNew feature or requestNew feature or requestStatus: Open.#1000 In modelcontextprotocol/java-sdk;SEP-2164: Standardize resource not found error code (-32602)
enhancementNew feature or requestNew feature or requestP1Significant bug affecting many users, highly requested featureSignificant bug affecting many users, highly requested featureready for workThe goal is clear and work towards it can be commencedThe goal is clear and work towards it can be commencedStatus: Open.#1001 In modelcontextprotocol/java-sdk;SEP-2352: Clarify authorization server binding and migration
enhancementNew feature or requestNew feature or requestP1Significant bug affecting many users, highly requested featureSignificant bug affecting many users, highly requested featureready for workThe goal is clear and work towards it can be commencedThe goal is clear and work towards it can be commencedStatus: Open.#1007 In modelcontextprotocol/java-sdk;SEP-2468: Recommend Issuer (iss) Parameter in MCP Auth Responses
enhancementNew feature or requestNew feature or requestP1Significant bug affecting many users, highly requested featureSignificant bug affecting many users, highly requested featureready for workThe goal is clear and work towards it can be commencedThe goal is clear and work towards it can be commencedStatus: Open.#1008 In modelcontextprotocol/java-sdk;SEP-2549: TTL for List Results
enhancementNew feature or requestNew feature or requestP1Significant bug affecting many users, highly requested featureSignificant bug affecting many users, highly requested featureready for workThe goal is clear and work towards it can be commencedThe goal is clear and work towards it can be commencedStatus: Open.#1009 In modelcontextprotocol/java-sdk;SEP-2577: Deprecate Roots, Sampling, and Logging
enhancementNew feature or requestNew feature or requestP1Significant bug affecting many users, highly requested featureSignificant bug affecting many users, highly requested featureready for workThe goal is clear and work towards it can be commencedThe goal is clear and work towards it can be commencedStatus: Open.#1012 In modelcontextprotocol/java-sdk;SEP-2663: Tasks Extension
enhancementNew feature or requestNew feature or requestextensionsWork relating to MCP extensions - see https://modelcontextprotocol.io/extensions/overviewWork relating to MCP extensions - see https://modelcontextprotocol.io/extensions/overviewP2Moderate issues affecting some users, edge cases, potentially valuable featureModerate issues affecting some users, edge cases, potentially valuable featureStatus: Open.#1013 In modelcontextprotocol/java-sdk;fix: standardize resource not found error code
P1Significant bug affecting many users, highly requested featureSignificant bug affecting many users, highly requested featureStatus: Open (in progress).modelcontextprotocol/java-sdknumber 1037#1037 In modelcontextprotocol/java-sdk;- Status: Open (in progress).modelcontextprotocol/java-sdknumber 1064#1064 In modelcontextprotocol/java-sdk;
feat(mcp-core): support Mcp-Name header for Streamable HTTP (SEP-2243)
enhancementNew feature or requestNew feature or requestStatus: Open (in progress).modelcontextprotocol/java-sdknumber 994#994 In modelcontextprotocol/java-sdk;Add Primitive repository APIs (
ResourceRepository,ToolsRepository, ... )enhancementNew feature or requestNew feature or requestP3Nice to haves, rare edge casesNice to haves, rare edge casesStatus: Open.#578 In modelcontextprotocol/java-sdk;