Case Token

token

uuid

required
Globally unique identifier for the case.

Parameters for adding a comment to a case

comment

string
required
Text of the comment

actor_token

string
Optional client-provided identifier for the actor performing this action, recorded on the resulting activity entry. This value is supplied by the client (for example, your own internal user ID) and is not authenticated by Lithic.

201 Case activity entry

object

A single entry in a case's activity feed

token

uuid
required
Globally unique identifier for the activity entry

entry_type

string
enum
required
The case field that changed, or the action that was taken, in an activity entry:

• STATUS - The case status changed
• TITLE - The case title changed
• ASSIGNED_TO - The case assignee changed
• RESOLUTION_OUTCOME - The resolution outcome was set or changed
• RESOLUTION_NOTES - The resolution notes were set or changed
• TAGS - The case tags changed
• PRIORITY - The case priority changed
• COMMENT - A comment was added or edited
• FILE - A file was attached to the case

STATUS TITLE ASSIGNED_TO RESOLUTION_OUTCOME RESOLUTION_NOTES TAGS PRIORITY COMMENT FILE

actor_token

string | null
required
Identifier of the actor that produced the activity entry

previous_value

string | null
required
Previous value of the changed field, when applicable

new_value

string | null
required
New value of the changed field, when applicable

created

date-time
required
Date and time at which the activity entry was created

400 Bad Request

404 Not Found

CURL Example

curl --request POST \
     --url https://sandbox.lithic.com/v1/transaction_monitoring/cases/case_token/comments \
     --header 'accept: application/json' \
     --header 'content-type: application/json' \
     --data '
{
  "comment": "string",
  "actor_token": "string"
}
'

{
  "token": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
  "entry_type": "STATUS",
  "actor_token": "string",
  "previous_value": "string",
  "new_value": "string",
  "created": "2026-07-18T00:25:55.023Z"
}