The Scenario
The Gumroad migration is happening this weekend. You have 500 historical customers in a Google Sheet — names and emails — who need to exist as Lemon Squeezy customer records before you send the migration announcement email on Monday.
You've read the Lemon Squeezy API docs. You could write a script. You don't have time to write a script. You also don't want to click "Add Customer" 500 times in the dashboard.
The bad version:
- Write a one-off Python script to loop through the sheet and call the Lemon Squeezy customer creation endpoint
- Debug authentication, handle rate limits, figure out how to write the returned customer IDs back to the sheet
- Realize halfway through that the script is creating duplicates for the 40 customers who already exist in Lemon Squeezy from prior purchases
- Run it again without duplicates, verify the outputs, fix the three rows that failed silently
A script that should take 30 minutes takes three hours and you're still not sure it worked correctly.
The Easy Way: One Prompt in SheetXAI
SheetXAI is an AI agent that lives inside your Google Sheet. It reads the sheet and connects to Lemon Squeezy through its built-in integration to create customer records in bulk — and write the returned IDs back to your sheet.
Create a Lemon Squeezy customer for each row in this sheet using the name in Column A and email in Column B — write the returned customer ID into Column C
What You Get
- Column C: the new Lemon Squeezy customer ID for each row
- Rows where the customer already existed in Lemon Squeezy will show the existing ID or an appropriate status
- Errors (malformed email, missing name) written to the column so you can identify and fix them
What If the Data Is Not Quite Ready
Some emails might already exist in Lemon Squeezy
For each row in this sheet where Column C is blank, create a new Lemon Squeezy customer using the store ID in cell F1, name from Column A, and email from Column B — write the new or existing customer ID into Column C and log any errors in Column D
Names are in separate first/last columns
Create a Lemon Squeezy customer for each row using the first name in Column A, last name in Column B, and email in Column C — combine first and last as the full name — write the returned customer ID into Column D
You want to skip rows that are already flagged as migrated
For each row in this sheet where Column D is blank, create a Lemon Squeezy customer using the name in Column A and email in Column B — write the customer ID into Column D and write Done into Column E when complete
Full migration in one shot with validation
Create a Lemon Squeezy customer for each row in this sheet using name from Column A and email from Column B — write the returned customer ID into Column C, write any error message into Column D, and after all rows are processed write a summary count of successes and failures into cell F1
One pass. 500 customers. Migration ready for Monday.
Try It
Get the 7-day free trial of SheetXAI and open the migration spreadsheet with your customer list, then ask it to create Lemon Squeezy records for each row and write the IDs back. You can also use the same workbook to pull your new Lemon Squeezy customer base after migration.