What problem does it solve? Wix Stores has two catalog versions (V1 and V3) that are not backwards compatible, so integrations break when they call the wrong SDK module for a site's catalog version. ## Core Features & Use Cases - Catalog Version Detection: Calls catalogVersioning.getCatalogVersion() at the start of every flow to determine whether a site uses V1_CATALOG, V3_CATALOG, or has Stores not installed. - Version-Aware SDK Routing: Routes product, inventory, and collection operations to the correct module (products vs productsV3, inventory vs inventoryItemsV3). - Permissions Lookup: Uses Wix MCP tools (SearchWixSDKDocumentation, ReadFullDocsArticle) to find required permissions for each API method. - Use Case: When building a Wix app that queries store products, first check the catalog version, then call productsV3.queryProducts() on V3 sites or products.queryProducts() on V1 sites, and subscribe to both V1 and V3 webhooks. ## Quick Start Ask the assistant to build a Wix Stores integration that checks the catalog version and queries products using the correct SDK module.