Headcode began as a way to learn UK rail data and how to use an LLM properly on something real. The product is a maybe; the research-to-PRD-to-tasks workflow I built alongside it, with review at every layer, is now how I work.

Headcode is a unified, developer-friendly JSON API that takes the fragmented, legacy feeds of the UK rail network and turns them into clean, enriched real-time data.