MCP Prioritization

A "human prioritization" MCP server built with the official MCP TypeScript SDK v2 (@modelcontextprotocol/server@^2.0.0) and the MCP Apps extension: the human_prioritization tool ships an interactive ui:// drag-and-drop list that hosts like Claude Cowork render as a sandboxed iframe. Reorder the items, press "Send priorities to chat", and the ranked list comes back into the conversation as Prioritized: 1. ... 2. ....

Try the deployed server

A live instance runs at https://mcp-prioritization.netlify.app/mcp — add it to Claude as a custom connector (Customize → Connectors → Add → Add custom connector → Remote MCP server URL; details in docs/claude.md).

Example queries to force the MCP tool to be picked up:

List top 10 biggest cities in Lithuania
Let me prioritize cities to visit

Requires at least a Sonnet-tier model — Haiku did not call the tool in testing.

Setup

Requires Node.js 26 (see .nvmrc) and uses TypeScript 7 (native compiler).

nvm use          # picks up .nvmrc
npm install
npm run typecheck   # tsc --noEmit

Quick test

npx @modelcontextprotocol/inspector --cli npx tsx src/stdio.ts --method tools/list | jq .

Documentation

Full documentation lives in docs/index.md (Open Knowledge Format bundle):

• Architecture — tool, ui:// view, protocol flow, transports

• Claude — Claude Code / Desktop / Cowork setup and MCP Apps support matrix

• VS Code — seeing the widget in VS Code's native chat

• ChatGPT — adding the deployed server as a ChatGPT plugin

• Netlify — /mcp endpoint, first-time project creation, GitHub Actions