# Scope and limitations

- Covers only the published catalog: Ray-Ban, Oakley, Maui Jim; 81 variants. "No match" never means "no such product exists on the market".
- US market, USD, millimetres, en-US. Other markets return 422 UNSUPPORTED_MARKET.
- Not provided: fit guarantees or fit probabilities, virtual try-on, face measurement, prescriptions, authenticity checks, checkout or payment, chat.
- Offers: no approved merchant/affiliate price source is connected, so price/stock/shipping conditions return NO_OFFER_COVERAGE. This site does not claim lowest prices and has no brand partnerships or authorized-dealer status.
- Layers: Discovery, Content and Tools are implemented. **Action: supported=false** (no purchase, booking or other write actions; POST queries are read-only). **A2A: a2a_supported=false** (no Agent Card is published).
- Images: no product images are licensed; pages show "Image unavailable" and link to the maker page.
- Discovery files (llms.txt, ARD, sitemap) do not guarantee that any AI system will use this service.