Project · live on iPhone and web
Feral Travels
A road-trip planner for people who travel in their vehicle. You describe the trip in a sentence; Penny plans every day's drive, and Finn places fuel stops so you never run dry.
The engineering
Built like a team of one that can't afford a bad deploy
- 1
Merging is the deploy, so the gate has to be right
Every PR gets its own Neon branch of production, rehearses its migrations there, and is tested on its own preview. The production deploy re-checks that this exact PR's CI was green before any migration runs: the worst case is a stale production, never a half-migrated one.
- 2
Incidents become guards, not memories
Each production incident ends in a structural guard that makes that class of bug impossible to reintroduce, mutation-checked by putting the bug back and watching the guard fail.
- 3
End-to-end tests with no backdoor
Every Playwright spec mints its own user and signs in through the real emailed-code flow; no session bypass exists. One spec sends a real email and asserts SPF and DMARC pass, so a broken DNS record fails CI before sign-in mail lands in spam.
- 4
An LLM that converts, never authors
Penny runs on Claude Haiku with 21 tools and only turns a sentence into typed calls. Coordinates come from place resolution, dates from the legs, and fuel stops only from Finn, a deterministic engine that never routes a dry stretch past the vehicle's range.
In the app
One message to a 14-day plan
Stack