{
	"$schema": "https://json-schema.org/draft/2020-12/schema",
	"$id": "https://schema.twindev.org/dataspace-protocol/DataspaceProtocolCatalogRequestMessage",
	"title": "DataspaceProtocolCatalogRequestMessage",
	"description": "Interface for the Dataspace Protocol catalog request message.",
	"type": "object",
	"properties": {
		"@context": {
			"$ref": "https://schema.twindev.org/dataspace-protocol/DataspaceProtocolContextType",
			"description": "The JSON-LD context."
		},
		"@type": {
			"const": "CatalogRequestMessage",
			"description": "The type of the message."
		},
		"filter": {
			"type": "array",
			"items": {},
			"description": "An implementation-specific query or filter expression."
		}
	},
	"required": ["@context", "@type"]
}