Turn a CSV into an API: free preview
See what your spreadsheet looks like as an API before you build anything. The page detects each column’s type, shows typed JSON records and writes an example query.
Your CSV
Detected columns
Sample JSON records
Example API query
This is the request shape Feedvault serves for a dataset: an API key in the Authorization header, filter[column]=value, q for full-text search, sort, order, limit (max 100) and cursor paging. Nothing is created until you import the file into an account.
Questions and answers
Is my CSV uploaded?
No. The file is read and analysed by your browser. Nothing is sent to our servers until you sign up and import it yourself.
How are column types detected?
Each column gets the narrowest type every non-empty value fits, in this order: boolean, integer, number, date, date-time, email, URL, otherwise text. Feedvault uses the same rules on the first 1,000 rows when you import.
How are dates like 03/04/2026 read?
If any value in the file has a first part above 12 the file is treated as day/month, if a second part is above 12 as month/day; otherwise day/month. Feedvault applies the same rule when you import.
What data can I put behind an API?
Data you own or are licensed to share. Feedvault asks you to confirm your rights and keeps provenance on every record; it does not scrape websites.