expressCart/config/payment/schema/blockonomics.json

{
    "properties": {
        "apiKey": {
            "type": "string"
        },
        "hostUrl": {
            "type": "string"
        },
        "newAddressApi": {
            "type": "string"
        },        
        "priceApi": {
            "type": "string"
        }
    },
    "required": [
        "api_key", "hostUrl", "newAddressApi", "priceApi"
    ],
    "additionalProperties": false
}