Dynamic Columns
Add new columns to the sheet at run time.
Virtual Columns
Create new columns by applying custom data transformation logic.
Unmapped & Ignored Columns
Accept columns not included in the sheet template, or let users drop columns from the import.
Import Links
Accept files from your users without a website or an app.
Validation Functions
Implement advanced validations using JavaScript functions.
Server Side Validation
Validate data at your server and report errors back for correction and re-upload.
Data Transforms
Bulk edit the dataset before pushing it to your system.
REST File API
Automate CSV submissions via API.
Environment Variables
Variables to configure the importer environment.
Auth API
Authenticate API requests to CSVbox using a secure header-based scheme.
Sheet API
Programmatically create and manage CSVbox sheets and their column configurations through the API.
MCP Server
Configure importers by prompting Claude, Cursor, or any MCP client instead of hand-writing schema JSON.
If / Else Builder
Add conditional validations and data transforms to a sheet without writing JavaScript.