Gas Wiser
Gas Wiser is an AI-powered fuel intelligence platform for US and Canadian drivers.
Core trick
Computes per-trip fuel cost from EPA efficiency data and route distance, then passes that result as context to a follow-up chat.
Description
Gas Wiser is an AI-powered fuel intelligence platform for US and Canadian drivers. Users input their vehicle from a real EPA fuel economy database, set home and work locations, and get auto-generated daily route costs. The Route Planner takes any origin and destination and produces a full AI analysis, fuel cost, optimal fill-up stop, efficiency score, price outlook, and vehicle-specific driving tips. The Trip Planner handles multi-day road trips with per-leg cost breakdowns, fill-up strategy, and departure timing. Everything is form-driven, no chat interfaces. Once a plan is generated, a single "Chat About This" button opens Claude with full context of that plan for follow-up questions. Powered by Claude Sonnet 4.7.
README excerpt
# Gas Wiser AI-powered fuel intelligence platform — find the cheapest gas, predict price trends, plan optimal fuel stops on a route, and chat with an AI fuel coach. Live site: https://gaswiser.com Repo: https://github.com/rapthar/gaswiser.ai ## What's in this monorepo - `backend/` — Fastify + TypeScript API. Handles auth, stations/prices, vehicle management, route planning, AI chat (Anthropic SDK), and price predictions. - `apps/web/` — Next.js 14 (App Router) dashboard. Auth, vehicle setup, nearby map, plans, AI chat, price trends. - `apps/mobile/` — Expo SDK 52 + Expo Router 4 React Native app. Same feature set as the web dashboard. - `packages/api-client/` — Shared typed API client used by web + mobile. - `packages/ui/` — Shared UI primitives. - `supabase/` — SQL migrations and seed data. ## Tech stack - **Backend:** Fastify, TypeScript, Supabase (Postgres + Auth), Anthropic SDK, Mapbox (directions + geocoding). - **AI:** Claude Opus 4.7 powers every agent in the system: - `routeOptimizer` — picks the cheapest fuel stops along a multi-leg route. - `priceScout` — predicts where local gas prices are heading. - `commuteCoach` — recommends the best day/time to fill up for a given commute. - `vehicleResearcher` — fills in MPG/trim data for user vehicles. - `stationAdvisor` — generates per-station "why fill up here" advice. - `chat` — streams plan-aware Q&A in the dashboard. - **Web:** Next.js 14, React, Tailwind, Leaflet (maps), Supabase JS client. - **Mobile: