Free tool · Inventory data generator

Inventory data with the problems already in it.

A complete set of inventory files for a company that does not exist: item master, stock report, the books, purchases, sales, counts and returns. Choose how messy. Every problem is planted on purpose and listed in the answer key, so you can test whether your AI finds it. Or build your own: your business, your question, your columns, up to 10,000 rows.

Runs in your browser. Nothing you choose or type here is sent anywhere.

The company

Business type

Items 200

Warehouses 2

Months of sales 12

Month end

Demand pattern

How messy

Data quality

Problems to plant

Cost in the wrong monthReceived this month, invoiced next, and the reverse Freight missing from item costA supplier starts billing freight on its own line Items with no standard costNew items the books leave out Duplicate itemsOne product under 2 codes Negative stockIssued before the receipt was booked Unit mismatchSet up as BOX, received as EA Count shrinkCounted less than the system says Returns never bookedGoods back on the shelf, not in the system Slow and dead stockStock with no sales for 6 months or more

Seed same seed, same data

The files

Answer key: . Open after your AI has tried.

Prompts to start with

Prefer to describe the business in your own words? Open the AI version in Claude. It designs the dataset for you, using your own Claude account.

1. The business

Business type

In a line or two optional

2. The question

What the data is for

Picking a question ticks the columns it needs. Change any of them below.

The dashboard or answer it feeds optional

3. The shape

One row per

Item a snapshot of every item Item per month Item per week Order line each customer order

Items 150

Periods 24

Last month in the data

4. The business rules

Supplier lead time, days

Demand

Seasonality

Stock the business keeps 6 weeks

Service level target 95%

Suppliers 6

Warehouses 2

5. Columns

Add your own column

For a list, write the choices in "From", separated by commas.

6. How messy

Messy data gets blank cells, duplicate rows, outliers, negative quantities and dates in 2 formats. Every one is listed in the answer key.