modelcontextprotocol / modelcontextprotocol/ext-apps

We Want MCP UI SDK for Java

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#53 2 comments 0 reactions 0 assignees View on GitHub

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enhancement
Dominant language
TypeScript
Stars
2.9k
Forks
387
Avg merge
3h 21m
Merged PRs (30d)
6

Description

We would like to request an official MCP UI SDK for Java that provides first-class support for building user interfaces powered by the Model Context Protocol (MCP). Java remains widely used in enterprise, desktop, and embedded environments, and having a native UI SDK would greatly expand MCP’s accessibility and adoption across these ecosystems.

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

No files, tests, or entry points are named. Start by reviewing the MCP Apps specification and the repository's existing SDK structure, then clarify the Java SDK's scope and acceptance criteria with maintainers. The issue does not define what completion would look like.

Written by the indexing model from the issue text.

Assessment

Tech stack
java
Domain
ai, api, frontend
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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