February 17, 2026

API Changes

Retrieve Client Access Details for a Contact

You can now retrieve a list of clients a Contact has access to in Karbon for Clients along with the access level that has been granted.

Note that ClientAccess is a read-only property and access to Karbon for Clients cannot be created or removed via the API.

To use this feature, include the querystring parameter

in your request to the endpoint. This will return an array of associated clients this contact has access to in Karbon for Clients.

For example, a request to

will include the following array in the response:

JSONCopyCopied!
"ClientAccess": [
    {
        "ClientKey": "26L7dsVZ5DzR",
        "ClientType": "Contact",
        "AccessLevel": "Limited"
    },
    {
        "ClientKey": "4FVM9lWhb4mp",
        "ClientType": "Organization",
        "AccessLevel": "FullAccess"
    }
]

Based on this response, you can see that the contact

has access to two clients in Karbon for Clients. They have limited access the person and full access the orgnization .

The

property will be either or , corresponding to the access level set for that contact in Karbon.