Tiers, limits, and what happens when you reach one
Free covers the catalogue, ratings, dealers, PIN codes, leads, and your own fleet on Nazar, up to 50 calls a day and 10 a minute. Business raises the limit to five thousand a day and a hundred and twenty a minute and adds bulk CSV export. Enterprise is for the bulk history, the demand index and the market reports that banks, insurers and makers work from.
The limits are in the open on every response rather than in a contract you have to read. When you reach one you are told which limit and when it resets; nothing is throttled silently and no key is cut off without a message.
Keys start free with no card. Write to the developer address for business or enterprise access and say what you are building, because the right tier depends on what you are doing rather than on how big you are.