DATA CONTRACT DEMO
Find data contract violations and drift before they reach production.
Your file never leaves this page. All checks run in your browser.
Demonstration fixtures are synthetic and intentionally constructed. They are not client data.
01 / INPUT
Use your own CSV or JSON
Maximum 5 MB. A draft contract is inferred locally and remains editable.
02 / CONTRACT
Editable checks
| Field | Type | Required | Min | Max | Enum | Unique |
|---|
03 / RESULTS
Rows0
Violations0
Drift signals0
VerdictWAITING
Synthetic control
Contract results
| Field | Check | Expected | Actual | Result | Rows affected |
|---|---|---|---|---|---|
| Load a sample or file to run checks. | |||||
Drift from the synthetic clean baseline
| Field | Metric | Baseline | Current | Deviation |
|---|---|---|---|---|
| No comparison yet. | ||||
04 / BOUNDARIES
What this page does not do
- It does not store your file, contract, or results.
- It does not transmit data to a server or third party.
- It does not decide whether data is fit for use; a person reviews the evidence.
View source on GitHubnode tests/run-tests.cjs