Fuel Grade Names API Online
The naming table behind every fuel product: our canonical grade codes and the name each grade carries at a pump in 41 European countries — ON in Poland, Nafta in Czechia, Gázolaj in Hungary, Motorină in Romania, ДП in Ukraine, Motorin in Turkey. Every name in the table is accepted by the fuel_type parameter of the other fuel products, and is resolved country-first: “95” is E10 at a Danish pump and E5 at a Polish one.
GET https://nakordoni.eu/api/v2/data/fuel-grades
— quota class: cheap
| Parameter | Description |
|---|---|
country | Optional ISO-2 filter — return just that country's local names instead of all 41 (PL, DE, UA, TR, MD, …). 404 when the country is not in the table. |
fuel_type | Optional probe: resolve one name in the context of `country` and report the canonical grade under `resolved` (e.g. country=PL&fuel_type=ON → diesel; country=DK&fuel_type=95 → e10; country=PL&fuel_type=95 → e5). null means we could not place it. |
Response fields — inside the data object of the envelope. [] marks a list, so data.items[].name is the name field of each element. A field is null, absent or an empty list when we hold no value for it — never a placeholder.
| Field | Description |
|---|---|
data.grades[].code | Canonical grade code — the value fuel_type takes in every fuel product. |
data.grades[].label | Plain-English description of the grade. |
data.grades[].family | diesel | petrol | gas | other. |
data.grades[].station_level | true when station feeds report this grade anywhere; false means it only ever appears in national averages. |
data.countries | Keyed by ISO-2 country, then by grade code, valued with that country's names for it. The first name in each list is the one to show a driver. |
data.count | How many countries the answer covers (41 unfiltered, 1 with ?country=). |
data.resolved | Only with ?fuel_type=: requested, country, grade (null when we cannot place the name), label and local_name. |
data.note | How resolution works, in one paragraph — safe to show to your users. |
curl "https://nakordoni.eu/api/v2/data/fuel-grades?country=PL&fuel_type=ON" \ -H "Authorization: Bearer NKD-DEV-XXXX-XXXX-XXXX"
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