10 tools from the UCP Checker MCP Server, categorised by risk level.
View the UCP Checker policy →check-domain Check if a domain supports Universal Commerce Protocol (UCP).
Returns the UCP status, manifest version, capabilities, response latency,
... discover-store Discover available shopping tools on a UCP-enabled store.
Connects to the store's MCP endpoint and lists all available
tools (search, ... get-product-details Get full product details including variant IDs from a UCP-enabled store.
Use this after search-catalog to resolve variant IDs needed for a... list-categories List all available store categories with store counts.
Use to discover what kinds of stores are available before narrowing down.
Retur... list-stores List verified UCP stores, optionally filtered by category and minimum score.
Use when the user wants to shop by category — e.g., "find me ... search-all Search for products across all verified UCP stores at once.
Fans out the query to multiple stores concurrently and returns
aggregated ... 3/5 search-catalog Search for products on any UCP-enabled Shopify store.
Searches the store's live product catalog via UCP/MCP and returns
matching produ... 2/5 search-policies Search store policies on any UCP-enabled Shopify store.
Query return policies, shipping policies, refund policies, privacy policies,
t... 2/5 The UCP Checker MCP server exposes 10 tools across 3 categories: Read, Write, Execute.
Use Intercept, the open-source MCP proxy. Write YAML rules for each tool — rate limits, argument validation, or deny rules — then run Intercept in front of the UCP Checker server.
UCP Checker tools are categorised as Read (8), Write (1), Execute (1). Each category has a recommended default policy.
Open source. One binary. Zero dependencies.
npx -y @policylayer/intercept