printable map
skill description
skill in the work

Deutschland Hiking Planner — About the project

💡 Inspiration

I love exploring Germany by train. With the Deutschlandticket, you can do it cheap nut it's hard to find route, to find how to get there from home and ask extra questions.

🤖 How Codex & GPT-5.6 were used

🏗️ Codex built the skill — I designed Skill.md helper with Codex, using natural language to find hikes.
🧠 GPT-5.6 is the heart and brain — It helps to gather and structure the data
🔗 Agentic tool use — Codex + GPT-5.6 go to web, combine other tools and skills and give me some good results

🛠️ What it does

The Deutschland Hiking Planner is an Agent Skill for Codex (and any capable agent). You tell it your home city once, and it:

finds real trails with distance,
checks that the regional trains to both trail ends are included in the Deutschlandticket,
confirms the return trip works after a realistic day of walking,
builds a print-friendly offline PDF map with landmarks, decision points, coordinates, and safety notes,
and keeps a local log so it never sends you on the same hike twice.

🧠 What I learned

It's easy to create something high level in codex, that is flexible and can be changed anytime.

🏗️ How I built it

Skill.md — I used skill builder from Codex to create a new skill and tune it after couple of times
MIT-licensed and open so anyone can use, fork, and extend it.