"Deliver a 60-second mobile 'Driveway Dossier' link to a listing agent's phone 45 minutes before a scheduled appointment, summarizing 24h market shifts, legal ownership, local news, and weather."
Eliminates table-side blindsides from unannounced neighbor price drops, unverified seller tax roll ownership, and weak hyper-local neighborhood context during listing pitches.
Sitting in the car 10 minutes before the appointment, skimming the 60-second mobile brief, and walking up to the door knowing every recent price move on the block and the exact legal names on the deed.
Agent schedules "Listing Appointment - 124 Maple St" in Google Calendar.
Webhook fires T-45m prior; RentCast, Exa, and Weather APIs fetch data in parallel.
LLM synthesizes raw data into 5 executive mobile briefing cards.
Agent receives SMS/Telegram alert, opens 60-second brief in car, and wins the pitch.
n8n workflow engine (or Python FastAPI microservice), Supabase PostgreSQL database, Twilio/Telegram worker, Jinja2/HTML renderer.
Calendar Webhook → Address Geocoding → Parallel RentCast + Exa + Weather Fetch → LLM Synthesis → Mobile HTML Brief Card → Push Alert.
Webhook /api/v1/webhook/calendar, Brief viewer /brief/:id, Manual trigger /api/v1/trigger.
Supabase PostgreSQL for agent credentials, subscription state, and cached 24-hour transient brief data.
Redis 24-hour TTL cache for rendered mobile brief HTML pages; fallback retry queue for webhook delivery.
Single brief builds in <4 seconds. Scalable to 1,000 daily briefs on Vercel + Supabase serverless stack.
Realtors will trust an automated brief 45 mins prior without manually opening desktop MLS. Validation: Include tap-to-verify MLS source links.
RentCast/Exa APIs will provide accurate 24h status changes nationwide. Validation: Add freshness score indicator on brief cards.
Agents will pay $49-$99/mo recurring for a single pre-appointment utility. Validation: Position as "Win Rate Multiplier" via TGA Case Study.
| Gate | Status | Notes |
|---|---|---|
| Problem is clear enough | Pass | High-value pain point: winning listing appointments and avoiding table-side surprises. |
| MVP scope is small enough | Pass | Tightly bounded to a T-45m Driveway Briefing card sent via SMS/Telegram. |
| Handoff prompt is implementation-ready | Pass | Integrations, architecture, and Seven-File Context structure fully mapped. |
| Wizard-of-Oz path was considered | Pass | n8n + Telegram Bot prototype path defined. |
This is what the agent receives on their phone 45 minutes before the listing appointment.