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Strong evidence

FlightSweeper

Agent-facing travel booking rails with live inventory, hosted checkout, and payment isolation.

Tier
Strong evidence
Pillar
Transaction rails
Visibility
Public
Status
completed
Date
Jun 2026

Case boundary

Month-wide flight search and booking workflow with route sweeps, destination sweeps, two-phase Duffel booking, encrypted passenger data, and Stripe subscriptions

Claim boundary

Human-confirmed checkout, not autonomous card charging or guaranteed hotel pricing.

FlightSweeper is a travel product for people who know where they want to go but not which day is cheapest.

The system scans a month of dates, ranks live itineraries, and takes the user from search to ticket issuance without leaving the platform.

What it does

  • Three product modes: route sweep (fixed O/D, find cheapest day), destination sweep (flexible O, find cheapest destination), and chat-to-book (natural language to Duffel booking via Claude)
  • ~30 concurrent sweep requests per search (concurrency 5, 900ms stagger) across the full target month
  • Two-phase Duffel booking: payment intent → offer verify → create order — prevents stale-price bookings
  • AES-256-GCM PII encryption for all stored passenger data
  • DOT 24h cancellation rule enforced at booking confirmation
  • Security-reviewed: 52KB AUDIT.md documenting the full threat model
  • Pro subscriptions via Stripe (fees waived), referral attribution, saved-route stubs, Expo iOS path