Returns a summary list of marketplace items with key commerce details and usage statistics.
GET /api/marketplace/listings HTTP/1.1 Host: infa.idefi.ai Accept: */*
Marketplace item summary list
[ { "id": "mp_001", "name": "Workflow DApp", "itemType": "dApp", "averageRating": 4.5, "price": 0 }, { "id": "mp_002", "name": "Agent Model Beta", "itemType": "AgentModel", "averageRating": 4.2, "leasePrice": 50, "salePrice": 5000, "supportedIndustries": [ "Finance", "Healthcare" ] } ]