Skip to main content
Send a transactional SMS message using the Antryk SMS Service. 
curl --request POST \
  --url https://ses.antryk.com/api/v1/sms/send \
  --header 'Content-Type: application/json' \
  --data '{
    "accessKey": "YOUR_ACCESS_KEY",
    "secretKey": "YOUR_SECRET_KEY",
    "to": "+1XXXXXXXXXX",
    "serviceId": "YOUR_SERVICE_ID"
  }'

​
Request Parameters

​
accessKey
string
required
The SMS service access key generated in the Antryk Console. Requests fail with 401 if missing or invalid.
​
secretKey
string
required
Secret key paired with the access key. Do not expose this in client-side code. Missing keys return 401 invalid credentials.
​
to
string
required
Recipient phone number in E.164 format (e.g. +1XXXXXXXXXX). Requests return 400 invalid_recipient for malformed numbers.
​
serviceId
string
required
Identifier of the SMS service configuration. Use the value from the console. Missing or disabled services return 404 service_not_found.

​
Successful Response

{
  "success": true,
  "messageId": "msg_5QZ9S6",
  "to": "+1XXXXXXXXXX",
  "queuedAt": "2025-11-06T11:21:00.000Z"
}

​
Error Scenarios

  • 401 invalid credentials – accessKey or secretKey missing/incorrect
  • 400 invalid_recipient – to not in E.164 or empty
  • 404 service_not_found – serviceId missing, revoked, or disabled
  • 429 rate_limited – service exceeds per-minute quota
  • 500 provider_unavailable – upstream SMS provider outage; retry with backoff
Always validate phone numbers and throttle retries to avoid rate limiting.