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Add support context propagation

enhancementNew feature or requestNew feature or request

Status: Closed (completed).

Enhancement

#225 In modelcontextprotocol/java-sdk;

· by He-Pin was closed on Feb 17, 2026

Add OutputSchema to Tool and CallToolResult.structuredContent

enhancementNew feature or requestNew feature or request

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

Status: Closed (completed).

Enhancement

#285 In modelcontextprotocol/java-sdk;

· by pantanurag555 was closed on Feb 18, 2026

Add support for structured output

duplicateThis issue or pull request already existsThis issue or pull request already exists

enhancementNew feature or requestNew feature or request

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

Status: Duplicate of an existing item.

Enhancement

#278 In modelcontextprotocol/java-sdk;

· by He-Pin was closed on Feb 18, 2026

· Duplicate

refactor: deprecate tool spec's arguments-only handler in favor of CallToolRequest

Status: Closed (abandoned).

modelcontextprotocol/java-sdknumber 375

#375 In modelcontextprotocol/java-sdk;

· by tzolov was closed on Jul 11, 2025

Feature: Add completions context

Status: Closed (abandoned).

modelcontextprotocol/java-sdknumber 369

#369 In modelcontextprotocol/java-sdk;

· by bzsurbhi was closed on Jul 11, 2025

refactor: extract MCP client initialization logic into LifecycleInitializer

Status: Closed (abandoned).

modelcontextprotocol/java-sdknumber 370

#370 In modelcontextprotocol/java-sdk;

· by tzolov was closed on Jul 11, 2025

Fix non-OK HTTP POST responses handling

Status: Closed (abandoned).

modelcontextprotocol/java-sdknumber 374

#374 In modelcontextprotocol/java-sdk;

· by chemicL was closed on Jul 11, 2025

fix: improve error handling in HttpClientSseClientTransport and add test

Status: Merged (completed).

modelcontextprotocol/java-sdknumber 391

#391 In modelcontextprotocol/java-sdk;

· by tzolov was closed on Jul 13, 2025

cleanup: Cleaned up some unused imports.

Status: Closed (abandoned).

modelcontextprotocol/java-sdknumber 358

#358 In modelcontextprotocol/java-sdk;

· by sunyuhan1998 was closed on Jul 14, 2025

refactor: reformat McpSchema.java and reorganize imports

Status: Closed (abandoned).

modelcontextprotocol/java-sdknumber 392

#392 In modelcontextprotocol/java-sdk;

· by tzolov was closed on Jul 15, 2025

fix: improve compatibility with non-compliant MCP servers

Status: Closed (abandoned).

modelcontextprotocol/java-sdknumber 413

#413 In modelcontextprotocol/java-sdk;

· by tzolov was closed on Jul 22, 2025

feat: add ignorable JSON-RPC methods support for both client and server

Status: Closed (abandoned).

modelcontextprotocol/java-sdknumber 417

#417 In modelcontextprotocol/java-sdk;

· by tzolov was closed on Jul 22, 2025

feat: implement HttpClient Streamable HTTP transport

Status: Closed (abandoned).

modelcontextprotocol/java-sdknumber 337

#337 In modelcontextprotocol/java-sdk;

· by tzolov was closed on Jul 3, 2025

Streamable HTTP Server abstractions and WebFlux transport provider

Status: Merged (completed).

modelcontextprotocol/java-sdknumber 420

#420 In modelcontextprotocol/java-sdk;

· by chemicL was closed on Jul 30, 2025

feat: add optional size property to Resource with builder

area/mcp-schema

Status: Closed (abandoned).

modelcontextprotocol/java-sdknumber 331

#331 In modelcontextprotocol/java-sdk;

· by LucaButBoring was closed on Jun 24, 2025

feat(McpAsyncClient): Handle ping request

area/client

Status: Closed (abandoned).

modelcontextprotocol/java-sdknumber 203

#203 In modelcontextprotocol/java-sdk;

· by OrGivati was closed on Jun 27, 2025

refactor: return immutable lists from list methods

area/client

Status: Merged (completed).

modelcontextprotocol/java-sdknumber 345

#345 In modelcontextprotocol/java-sdk;

· by tzolov was closed on Jun 27, 2025

feat: implement audio content

area/mcp-schema

Status: Closed (abandoned).

modelcontextprotocol/java-sdknumber 243

#243 In modelcontextprotocol/java-sdk;

· by LucaButBoring was closed on Jun 15, 2025

Feat: Added the annotations attribute to McpSchema.Tool

area/mcp-schema

Status: Closed (abandoned).

modelcontextprotocol/java-sdknumber 313

#313 In modelcontextprotocol/java-sdk;

· by sunyuhan1998 was closed on Jun 24, 2025

feat: Add ResourceLink

area/mcp-schema

breaking-change

Status: Closed (abandoned).

modelcontextprotocol/java-sdknumber 341

#341 In modelcontextprotocol/java-sdk;

· by bzsurbhi was closed on Jun 27, 2025

feat: add progress token support and extend Request interface

area/mcp-schema

breaking-change

Status: Closed (abandoned).

modelcontextprotocol/java-sdknumber 352

#352 In modelcontextprotocol/java-sdk;

· by tzolov was closed on Jul 1, 2025

feat: refactor the tool specifications

Status: Closed (abandoned).

modelcontextprotocol/java-sdknumber 351

#351 In modelcontextprotocol/java-sdk;

· by tzolov was closed on Jul 5, 2025

feat: add structured output support for MCP tools

Status: Closed (abandoned).

modelcontextprotocol/java-sdknumber 357

#357 In modelcontextprotocol/java-sdk;

· by tzolov was closed on Jul 13, 2025

feat: Support Progress Flow

Status: Closed (abandoned).

modelcontextprotocol/java-sdknumber 407

#407 In modelcontextprotocol/java-sdk;

· by 134130 was closed on Jul 17, 2025

feat: Add _meta field to classes across MCPSchema

Status: Closed (abandoned).

modelcontextprotocol/java-sdknumber 368

#368 In modelcontextprotocol/java-sdk;

· by pantanurag555 was closed on Jul 17, 2025