find_fuel_station
Read-onlyIdempotent
Finds filling stations around a place or coordinate under any combination of filters — grade, brand, name, open now, open at a time you name, open 24 h — sorted by distance, price or name. Use when the question is WHICH station: the closest diesel to a stop, an ARAL open tonight, what one forecourt sells. Do NOT use for the plain "where is fuel cheapest" question (call find_cheapest_fuel) or for charging an electric car (call find_charging_station). Every result carries the attribution and the MTS-K note, and says how old each price and opening-hours claim is.
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| lat | No | Latitude in WGS 84, e.g. 48.137. Use with lon when the caller already holds coordinates; otherwise use place. | |
| lon | No | Longitude in WGS 84, e.g. 11.576. Use with lat; otherwise use place. | |
| fuel | No | Only stations with a current price for this grade: "e5" (Super E5), "e10" (Super E10) or "diesel". Omit to get every station near the place whatever it sells — the answer then lists all the grades it holds a price for. Required when sort is "price", because a price ordering needs a grade. | |
| name | No | Part of the station's own name or brand, case-insensitive: "Autohof", "Raststätte Fulda". Use it when the person named a specific forecourt rather than a chain. Combine with place to keep the search local. | |
| sort | No | Order of the answer: "distance" (nearest first, the default — use it for "closest diesel to Hamburg Hbf"), "price" (cheapest first, needs fuel), or "name" (alphabetical, for a person scanning a list of a brand's forecourts). | distance |
| brand | No | Only stations of this brand, matched case-insensitively anywhere in the brand field: "ARAL", "Shell", "TotalEnergies", "JET". Use it when the person named a chain ("die ARAL an der B1"). Free stations often carry no brand at all and are then not matched by any brand. | |
| limit | No | How many stations to return (1–10, default 5). | |
| place | No | Where to look, as free text: a city ("München", "Munich"), a district or Kreis ("Kreis Fulda"), a Bundesland, a station or stop ("Hamburg Hbf"), a motorway junction ("AK Neufahrn"), or a street address with a house number ("Bahnhofstraße 12, 36037 Fulda"). A motorway number alone ("A7") resolves to the road, which has no single point — name a town or junction on it instead. Use this instead of coordinates whenever the person named a place. An address needs its town or postcode — a street and a number alone exist in many towns. Give either place OR lat+lon, never both. | |
| open_at | No | Only stations open at that time in Germany (Europe/Berlin): "23:30" means the next time the clock shows 23:30, and "2026-09-30 06:15" a specific local date and time. Use it for "is it still open tonight". Do not pass it together with open_now — they ask the same question about two different clocks. | |
| language | No | Set this on every call to the language the person is writing in: "en" if they wrote English, "de" if they wrote German. Do not leave it out: it defaults to German ("de"), which is only the fallback when the language is genuinely unclear, so an English question sent without it is answered in German — a wrong answer. Place names, station names and road numbers are never translated in either language; in English the German term is kept in parentheses so the person recognises it on signs and in local apps. | de |
| open_now | No | When true, only stations the published opening hours say are open at this moment. Default false. A station whose hours we have never read is NOT returned by this filter and is counted in the answer instead — the result never guesses that an unknown station is open. | |
| radius_km | No | Search radius around the place in kilometres (1–25, default 5). 25 km is the provider's own ceiling — a larger circle is a dataset request, not a consumer question. | |
| whole_day | No | When true, only stations the provider flags as open around the clock (24/7). Default false. Use it when asked whether a station never closes ("durchgehend geöffnet", "around the clock") and for a night drive; it is a stricter filter than open_now, which is satisfied by a station that closes at 22:00. |