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HomeBase: your family's chief of staff for Alexa+

A self-hosted MCP server (Streamable HTTP, protocol 2026-07-28, newer than the 2025-11-25 minimum) that gives Alexa+ a shared brain for the household: fair chores, a schedule that catches clashes, pickup duty that rotates, a grocery list, and a spoken morning briefing. It ships with a simulated Alexa+ smart display (voice in, voice out) so you can see and hear it work.

Track: Alexa+ Mini challenge: Open Source (MIT)

Why it's useful

Families don't need another calendar. They need the decisions made: who takes the 5:30 pickup, whose turn it is for the heavy chore, and "wait, Arjun is double-booked". HomeBase returns a why with every decision so Alexa+ can say it out loud ("Maya is free and has done the fewest pickups").

Related MCP server: Aura+

The MCP server (14 tools)

Area

Tools

Family

add_family_member, list_family

Chores

add_chore (auto-assigns by workload), complete_chore, chore_status

Schedule

add_event (reports conflicts), todays_schedule, who_can_pickup, assign_pickup

Grocery

grocery_add, grocery_list, grocery_bought

Voice

daily_briefing (returns a spoken string), load_demo_family

Plus the resource homebase://summary. Anticipated failures (unknown family member, bad time) are raised as MCP ToolErrors with a readable message, so Alexa+ can tell the user what to fix.

The smart-display simulator

Open http://127.0.0.1:8000/ while the server runs.

  • Timeline with one lane per person; double-bookings show as hatched overlaps, assigned rides as dashed bars.

  • Talk to it with the mic (Chrome or Edge), type, or tap a suggestion. Toggle "Speak replies" to hear answers.

  • Every reply shows which MCP tool it called. The page's /api/tool endpoint dispatches into the same MCPServer instance that Alexa+ would reach at /mcp, so the simulator exercises the real tools.

  • The sentence-to-tool step is a small deterministic parser (web/intents.js), so demos behave the same every take.

Try: "What's the plan today?", "Assign the 5:30 pickup for Kabir from football", "Add a chore: vacuum the stairs", "Schedule school meeting for Arjun at 4 pm", "Add eggs to the grocery list", "Who has the most chores?"

Quick start

pip install -r requirements.txt
python -m homebase.server --port 8000      # MCP at http://127.0.0.1:8000/mcp, UI at http://127.0.0.1:8000/
python scripts/demo_client.py              # second terminal: scripted MCP-client demo over Streamable HTTP
python -m pytest -q tests                  # Python tests
node web/intents.test.js                   # parser tests (needs Node, optional)

Data lives in a local SQLite file (HOMEBASE_DB to relocate). --stdio is also supported for local MCP clients. "Reset demo" in the UI (or saying "reset") restores the sample family for clean retakes.

Connecting to Alexa+

Expose the server over HTTPS (for example cloudflared tunnel --url http://localhost:8000, or deploy to any container host) and register the /mcp URL as your MCP integration in the Alexa+ developer preview.

Layout

  • homebase/core.py: pure logic and SQLite, unit-tested

  • homebase/server.py: MCP tools (MCPServer from the official mcp SDK) plus the web routes

  • web/index.html, web/intents.js: the smart-display simulator

  • scripts/demo_client.py: end-to-end MCP client over Streamable HTTP

  • tests/: pytest suite

Hackathon notes

Built during the Amazon Developer Hackathon window (Oct 2026). All code in this repo was written for it.

License

MIT

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