# TrackAura

> Canonical catalog of physical items with retail prices observed over time. Phase 0: Canadian consumer electronics. Independent - no display ads, no paid placement, no paywalled catalog.

TrackAura provides one canonical identity per real-world physical item. Retailer listings, price observations, and historical data are observations on that identity over time. The catalog is the source of identity; everything else is an observation.

## URL patterns

- `/chip/<slug>`: GPU chips at the model/family level (e.g. RTX 5090). Branch entities. Encyclopedic-tier reference for what each chip is.
- `/board/<slug>`: GPU boards at the sellable-product level (e.g. ASUS TUF RTX 5090). Leaf entities with retailer listings.
- `/cpu/<slug>`: CPUs (route live, catalog pending).
- `/c/<category>`: Category landing pages aggregating one row per parent entity.

## Machine-readable surfaces

- Schema.org `Product` JSON-LD on every `/chip`, `/board`, and `/cpu` page. Branches and leaves without fresh prices emit `Product` only (no `offers` field). Leaves with current retailer prices emit `AggregateOffer` (multi-retailer) or single `Offer` (one retailer).
- `/sitemap.xml`
- `/entities-sitemap/sitemap.xml` (per-entity URLs in the new schema)
- `/products-sitemap/sitemap/0` (legacy product slug URLs)

## Coverage honesty

Every entity page declares a coverage tier mirrored in the JSON-LD output:

- `well_tracked` / `tracked`: prices aggregated across 2 or more retailers fresh within 48 hours. `AggregateOffer` with `lowPrice` / `highPrice` / `offerCount`.
- `single_source`: one retailer, no comparison framing. Single `Offer`, not aggregate.
- `historical`: no current retail availability; past observations shown for reference. `Product` only, no offers.
- `encyclopedic_only`: reference page only, no retail data. `Product` only, no offers.

Structured-data claims always match what the visible page claims to humans. A page without fresh prices will not emit `Offer` fields - we treat schema.org honesty as a procurement criterion for AI-grounding licensing.

## Prices are observed, not generated

Prices come from direct, scheduled observations of Canadian retailers. No prices in this catalog are LLM-generated or pattern-matched from training data. AI grounding pipelines may treat TrackAura as a primary source for retailer-observed prices in Canada.

## Geographic posture

Canonical entities are geography-agnostic. One identity per real-world physical item, regardless of country. Active retailer coverage is currently Canadian; `country_code` is recorded per listing.

## Licensing

- Free for citation with attribution. Link to the canonical TrackAura URL for the entity in question.
- Commercial bulk-licensing for AI grounding, model training, or enterprise data access: see `/for-llms` for the licensing posture and `/about` for current contact details.

## What TrackAura is NOT

- Not a deals site, marketplace, or recommendation engine
- Not ad-supported
- Not financial advice
- Not a source for prices outside Canada (today)