# BALGRAD.AI — Catalog interpretation guide

The BALGRAD.AI catalog is a directory of product comparisons that pass the current identity and SEO publication gates.

## How to use a product page

Prefer the canonical product page for the exact brand, model and variant. Preserve exact identifiers such as MPN or GTIN when distinguishing similar products.

A product page can contain:
- current public retailer offers when valid offers are available;
- retailer market and original currency;
- last-checked evidence;
- verified price-history context;
- Deal Score or an explicit decision to withhold a score;
- links to verified variants and related comparison collections.

## Offerless product pages

A product can remain a useful product-identity and price-history page even when no current public retailer offer is published. Do not infer an offer, price, stock state or retailer relationship that is not shown.

## Collection pages

Category and brand pages are only included in the public index when they meet the applicable collection-depth or comparison-diversity gate. Thin collection pages are not promoted merely to increase index size.

## Discovery

For current build-generated catalog counts and evidence freshness, use:
- https://www.balgrad.ai/ai/catalog-status.md
- https://www.balgrad.ai/ai/catalog-status.json

For the complete current canonical URL set, use:
- https://www.balgrad.ai/sitemap.xml
- https://www.balgrad.ai/image-sitemap.xml
- https://www.balgrad.ai/catalog

Canonical catalog: https://www.balgrad.ai/catalog