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Household Coordinator

by Willyahaisibwe
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TypeScript
Remote

Household Coordinator — Alexa+ MCP Server

License: MIT (see LICENSE)

Built for the Amazon Developer Hackathon (Alexa+ track).

What it does

Household Coordinator turns Alexa+ into a shared task brain for a household. Instead of a single flat to-do list, it tracks who owns each task, when it's due, and what's tagged for specific occasions (like "guests are coming over"). Alexa+ can check status, surface what's overdue, mark things done, and reassign work — all through natural conversation.

Example interactions:

  • "Alexa+, what's left before the Reeds come over?" → filters tasks tagged guests

  • "Alexa+, what's overdue?" → flags anything past its due time

  • "Alexa+, mark vacuuming as done" → completes a task by fuzzy title match

  • "Alexa+, give the trash to Sam" → reassigns ownership

  • "Alexa+, how's the household doing?" → per-person progress rollup

Related MCP server: AlexaTasker

Architecture

  • Transport: MCP Streamable HTTP, negotiating spec 2025-11-25 (the SDK also supports 2025-06-18, 2025-03-26, and older versions for backward compatibility with older clients)

  • Server: Node.js + TypeScript, @modelcontextprotocol/sdk

  • Storage: a single JSON file (household.json) read/written directly — no native dependencies to compile, no external services needed for the demo

  • Web layer: Express, exposing /mcp (POST/GET/DELETE per the Streamable HTTP spec) and /health

Tools exposed

Tool

Description

list_tasks

List tasks, optionally filtered by tag, owner, or status

get_overdue_tasks

Return tasks past their due time and not yet done

add_task

Create a new task with an owner, tags, and due time

mark_task_done

Mark a task complete by ID or fuzzy title match

reassign_task

Change who owns a task

get_household_summary

Rollup of totals, overdue count, and per-person progress

Setup

npm install
npm run seed     # populate household.json with demo tasks
npm run dev       # run with hot reload, or:
npm run build && npm start

The server listens on http://localhost:3000/mcp by default (override with PORT).

Connecting to Alexa+

Point your Alexa+ Preview MCP integration at the deployed /mcp endpoint (Streamable HTTP). See Amazon's Alexa+ developer documentation for how to register a self-hosted MCP server.

Testing manually

You can exercise the server directly with curl — initialize a session, then call tools/list or tools/call with the returned mcp-session-id header. See server.ts for the exact route behavior.

Notes for hackathon judges

This is a single-household demo (no auth/multi-tenancy) to keep the scope tight for the hackathon window. The data model and tool set are intentionally generalizable to a multi-household, authenticated product.

This server cannot be deployed

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Maintenance

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Resources

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