Load the requirements
Compare two Product Type Definition schemas or use the documented demo fixtures.
Marketplace product-data change intelligence
Know which listings need attention when marketplace product-data requirements change.
LayeredOps Catalog Guard compares requirement schemas, checks the products in a catalogue, and shows the evidence behind every result—without editing a listing.
Production Amazon connection is in private beta. This public site does not connect to Amazon or process catalogue data.
Example catalogueDemo data
Products checked100
47 need attentionincluding 35 caused by the new rules
New requirementRequired attribute
Value no longer allowedEnum changed
The problem
A schema change is only useful when you know what it means for your catalogue.
Raw JSON diffs create noise. Catalog Guard normalizes the rules first, separates new impacts from pre-existing issues, and keeps the source paths needed to verify the result.
How it works
From changed rule to affected SKU.
Evaluate the catalogue
Validate each SKU against the old and new normalized rules using the deterministic engine.
Review the evidence
See the affected attribute, previous rule, new rule, current value, and a conservative next step.
A deliberate boundary
Analysis, not automation.
Catalog Guard does not create, patch, delete, price, stock, or submit marketplace listings. Teams review the evidence and decide what to do in their established systems.
- Read-only catalogue and schema operations
- No automatic marketplace changes
- Demo available without Amazon credentials
- Evidence retained with each finding
Explore the workflow