Ask about products, prices, stock, specs, shipping, returns, warranty, payments or FAQ entries. I will cite the catalog field used for each grounded answer.
Fully client-side catalog assistant
Ask grounded questions about Lumen Acoustics.
The app loads catalog.json at runtime, attempts a pinned small WebLLM model on
WebGPU, and answers only from the catalog with visible source fields.
Model status
Loading catalog…
Preparing local answer path.
Backend tier
initializing
engine pending
TTFT
—
latest answer
Tokens/sec
—
latest answer
Grounding rules
Every factual answer is constrained to the loaded catalog. If a question asks for a fact, deal, coupon, or outside topic that is not present there, the assistant says so instead of guessing.