Send Single SMS Message

Send an SMS message to a single recipient using the Single SMS endpoint.

POST /send/single

Required Permission

create:SingleSMS

Your API key must have this permission enabled in order to use this endpoint.

Example Request

curl --location 'https://<hostname>/send/single' \
  --header 'Accept: application/json' \
  --header 'Content-Type: application/json' \
  --header 'Authorization: Bearer YOUR_API_KEY' \
  --data '{
    "text": "test",
    "originator": "test",
    "recipient": "4479000000001",
    "shortenUrls": false,
    "excludeOptouts": true
  }'

Replace YOUR_API_KEY with your API key.

All endpoints shown in this documentation use a sample base URL. The production API endpoint is provided by our team upon request.

Request Parameters

Field	Type	Required	Description
text	string	Yes	The SMS message content.
originator	string	Yes	The sender ID displayed on the recipient’s handset.
recipient	string	Yes	The destination phone number in international format.
shortenUrls	boolean	No	Whether URLs in the message should be automatically shortened.
excludeOptouts	boolean	No	Whether opted-out recipients should be excluded from delivery.
scheduleDateTime	string (ISO 8601 datetime)	No	Schedules the message or campaign to be sent at a future date and time. The value must be provided in ISO 8601 format (e.g. 2025-03-01T14:30:00Z). If omitted, the message or campaign is sent immediately.

Responses

Authentication Error (HTTP 403)

Returned when the API key is invalid or does not have the required permission.

{
  "success": false,
  "error": {
    "name": "AuthenticationError",
    "statusCode": 403
  }
}

Validation Error (HTTP 400)

Returned when required fields are missing or invalid.

{
  "success": false,
  "error": {
    "name": "ValidationError",
    "statusCode": 400,
    "object": "Missing Originator object"
  }
}

Success (HTTP 200)

Returned when the message has been successfully accepted for delivery.

{
  "success": true,
  "record": {
    "id": "e5815fee-e86e-4fd7-9cad-55444f023bbb",
    "type": "SingleSMS",
    "scheduled": "2025-11-10T21:14:04.981Z",
    "recipientCount": 1
  }
}

A successful response confirms that the message has been queued for delivery. SMS delivery itself is handled asynchronously.