Update Custom Variable

Updates an existing custom variable by its ID. Use this endpoint to modify a variable’s source, default value, or other properties.

Partial updates: Only the provided fields are updated; omitted fields remain unchanged.

Restrictions: The variable name cannot be changed after creation.

PATCH /ai-agents/agent-builder/agents/variables/custom/{variableId}

Update Custom Variable

cURL

curl --request PATCH \
  --url https://{appid}.api-{region}.cometchat.io/v3/ai-agents/agent-builder/agents/variables/custom/{variableId} \
  --header 'Content-Type: application/json' \
  --header 'apikey: <api-key>' \
  --data '
{
  "description": "The preferred language of the user",
  "sourceType": "user_metadata",
  "sourcePath": "language",
  "constantValue": "en",
  "defaultValue": "en"
}
'

200

{
  "_id": "507f1f77bcf86cd799439011",
  "appId": "my-app-id",
  "name": "user.plan",
  "description": "The user subscription plan",
  "sourceType": "user_metadata",
  "sourcePath": "metadata.plan",
  "constantValue": "",
  "defaultValue": "free",
  "category": "custom",
  "createdAt": 1700000000000,
  "updatedAt": 1700000000000
}

Authorizations

apikey · string · header · required

API Key with fullAccess scope(i.e. Rest API Key from the Dashboard).

Path Parameters

variableId · string · required

Variable ID to update

Body

application/json

description · string

Human-readable description of the variable

Maximum string length: 200

Example:

"The preferred language of the user"

sourceType · enum<string>

Source from which the variable value is resolved

Available options: message_metadata, user_metadata, constant

Example:

"user_metadata"

sourcePath · string

Dot-notation path to extract the value from the source metadata

Maximum string length: 100

Example:

"language"

constantValue · string

Fixed value used when sourceType is constant

Maximum string length: 500

Example:

"en"

defaultValue · string

Fallback value used when the source path does not resolve

Maximum string length: 200

Example:

"en"

Response

200

application/json

Custom variable updated successfully

_id · string

Example:

"507f1f77bcf86cd799439011"

appId · string

Example:

"my-app-id"

name · string

Example:

"user.plan"

description · string

Example:

"The user subscription plan"

sourceType · enum<string>

Available options: message_metadata, user_metadata, constant

Example:

"user_metadata"

sourcePath · string

Example:

"metadata.plan"

constantValue · string

Example:

""

defaultValue · string

Example:

"free"

category · enum<string>

Available options: custom

Example:

"custom"

createdAt · number

Example:

1700000000000

updatedAt · number

Example:

1700000000000