Testing a JSON request
- Last Updated: October 24, 2025
- 1 minute read
- Corticon
- Documentation
Formats of requests
You can specify JSON requests in either of two formats:

- Detailed with
__metadataannotations—The default format allows detailed, unambiguous requests. This format is especially useful when associations are involved, or when the entities have attributes that are used in many entities. - Native with no annotations—Many applications produce requests in the minimal format, presenting compact and readable files for requests. The format requires that Corticon parse the incoming data to identify the root entities and the attributes of the associated entities.

Sample request with full
__metadata
annotations{
"__metadataRoot": {"#locale": ""},
"Objects": [{
"preferredCard": {
"cumulativeCashBack": 9.24,
"__metadata": {
"#type": "PreferredAccount",
"#id": "PreferredAccount_id_1"
},
"cardNumber": "12"
},
"ShoppingCart": {
"totalAmount": null,
"Item": [
{
"price": 55,
"name": "Filet Mignon",
"__metadata": {
"#type": "Item",
"#id": "Item_id_1"
},
"department": null,
"barCode": "39-280-12345"
},
{
"price": 14.99,
"name": "Beach Towel",
"__metadata": {
"#type": "Item",
"#id": "Item_id_2"
},
"department": null,
"barCode": "32-300-23456"
},
{
"price": 12.5,
"name": "Ginger Ale Case",
"__metadata": {
"#type": "Item",
"#id": "Item_id_3"
},
"department": null,
"barCode": "32-285-34567"
}
],
"useCashBack": true,
"savings": null,
"__metadata": {
"#type": "ShoppingCart",
"#id": "ShoppingCart_id_1"
}
},
"__metadata": {
"#type": "Customer",
"#id": "Customer_id_1"
},
"Name": ""
}]
}