ONLINE TOOL

Data Contract Builder

Turn a reference file into a reusable data contract, then validate future deliveries against the same rules.

Local processingNo account required

CONCRETE EXAMPLE

Approved reference → next delivery

BEFORE

Reference: employee_id, email, status, department
Next delivery: duplicate ID, invalid email, unknown status

→

AFTER

Reusable JSON contract + row/column/rule report + explainable validation

PRIVACY

Processed content is not uploaded to WorkToolset. Required libraries may be loaded by the site, but the file stays in the browser.

GOOD TO KNOW

Rules are inferred from a sample and should be adjusted when the reference does not cover every allowed case.
A technical contract does not replace business rules absent from the data.

HOW IT WORKS

PRIVACY

Are my files uploaded to WorkToolset?

No. This tool runs locally in your browser.

Is my original file modified?

No. WorkToolset creates a new copy or export.

Do I need an account?

No for this free tool. Accounts are mainly used for favorites, presets and future workflows.