Canadian grocery shelf prices from 200+ stores, every province. Free key: 500 calls a month, no card.
Scored across 4 tools
The four tools have largely distinct purposes: panel coverage, barcode lookup, name/brand search, and SKU price history. lookup_product and search_products both return current product offers, but their input modes (barcode vs. description) and descriptions make the boundary clear enough.
Names are consistently snake_case and mostly use verb_noun patterns (list_reference_stores, lookup_product, search_products). price_history breaks the verb pattern but remains clear and readable.
Four tools is a tight, well-scoped set for a grocery price service. Each tool covers a necessary capability: coverage discovery, barcode resolution, textual product search, and historical pricing.
The surface covers the core workflows: checking panel coverage, resolving products by barcode or name, viewing current offers, and retrieving price history. Minor gaps exist, such as no direct current-offer lookup by known SKU or broader product detail retrieval, but agents can work around them.
The configured reference stores, one per banner and province, with their banner, province, coordinates and observations_30d: the store's price-event count over the trailing 30 days. A configured store can stop collecting; a store at 0 recorded no price events in that window. Call this to answer 'what does Vynn actually cover?' — it is the panel definition, not a directory of every grocery store in Canada. The result includes open_in_vynn_url, an absolute link to Vynn's retailer list on the web.
Inputs: limit, banner, province.
Resolve a UPC/EAN/GTIN barcode to the product it identifies and the current offers for it across Canadian grocery banners in one province. Requires a province because grocery prices are store-scoped: there is no single national price for a product. Returns an empty offer list, not an error, when the barcode is known but not currently carried. The result includes open_in_vynn_url, an absolute Vynn web link for this product.
Inputs: upc (required), province (required), limit.
Observed price series for a single retailer SKU over a lookback window. IMPORTANT: the identifier is a retailer-scoped SKU (an external_sku), not a UPC — passing a barcode here will not resolve. Use lookup_product or search_products first to obtain a SKU. A province is required, because the series is scoped to that province's reference stores. Prices are observed on our reference-store panel and are not guaranteed to match every store. When the product name is available, the result includes open_in_vynn_url, an absolute Vynn web link that searches for it; the linked page sets its own store scope, so its prices may differ from this series.
Inputs: sku (required), banner (required), province (required), period.
Search Canadian grocery products by name or brand in one province. Use this when you have a description rather than a barcode. Province is required because the search service does not publish a national mixed-store result. Returns catalogue entries with current prices, not a price history. The result includes open_in_vynn_url, an absolute Vynn web link that carries the query. The linked page sets its own store scope, so its prices may differ from this result.
Inputs: query (required), province (required), limit.
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
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