Give your AI assistant real-time fuel prices for every gas station in Germany.

Data comes from the official Markttransparenzstelle für Kraftstoffe (Federal Cartel Office) — German law requires all 14,000+ stations to report price changes in real time. This server queries it via Tankerkönig (CC BY 4.0).

What you can ask:

"Where is the cheapest E10 within 5 km of Schwäbisch Hall?"
"Diesel prices near Stuttgart Hauptbahnhof, cheapest first"
"Should I fill up now or is fuel cheaper across town?"

Tools:

find_fuel — search by city or address (built-in geocoding via OpenStreetMap)
find_fuel_at — search by exact coordinates

Results are sorted cheapest-first, only open stations with current prices. Radius 1–25 km, fuel types E5 / E10 / diesel.

Setup: you need a free personal API key from creativecommons.tankerkoenig.de (the data license requires individual registration — takes a few minutes, key arrives by email).