JSON to CSV: Turning API Data into Spreadsheet-Friendly Files

API responses are often easy for code to consume but awkward to inspect in a spreadsheet. JSON to CSV conversion creates a shareable table, yet nested objects and arrays require a deliberate decision about which fields are useful to people reading the export.

Start with an array of records that shares a consistent set of keys. If the response is wrapped in a data property, isolate that array first; if values are nested, flatten only the fields that answer the question the spreadsheet is meant to support.

Use /tools/json-to-csv to convert a copy of the data locally and open the result in a spreadsheet for a quick check. Look for correctly quoted commas and double quotes, complete headers, and rows that did not shift because one field contained a line break.

Do not export sensitive fields merely because they appear in the response. Access tokens, internal IDs, customer notes, and raw metadata can travel farther once a CSV is emailed or opened in a shared spreadsheet service.

For recurring reports, define a small export schema instead of dumping every API field. Stable column names make formulas, filters, and downstream imports more reliable, and they make it obvious when the API changes unexpectedly.