Help
Answers to typical questions about requests, format and limits.
Does field order affect the result?
Read object properties by key. Their display order is intended for people reading the example.
What if I need a dataset that is not here?
Countries, currencies, time zones and units are available today. The set of datasets may grow over time; watch the reference.
What should I do on a 404?
Check the dataset address: it must match the reference exactly, including the version in the path and the .json extension.
Where does the data come from?
Country and currency codes follow ISO standards, time zones follow the IANA base, and units follow the International System of Units — open, well-known sources.
Can I look up a value without writing code?
Choose a collection on the home page and type part of its name or code. You can expand the matching records in your browser.
How many records are in the datasets?
It depends on the dataset. The exact record count and file size are shown in the reference next to each address.
Do I need a key or sign-up?
No. Every dataset is open and served without keys, tokens or sign-up. A plain GET request to the dataset address is enough.
Do you collect data about visitors?
No. We set no cookies, add no analytics and keep no request logs. The response depends only on the dataset address.
Under what license can I use the data?
The data rests on open standards and free databases and can be used freely. Where appropriate, cite the source standard.