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How to send and receive SMS using the REST API

Use the SMS incoming endpoint to send a message to a device. 
curl --request POST \
  'https://dashboard.hologram.io/api/1/sms/incoming' \
  -u apikey:YOUR_HOLOGRAM_API_KEY \
  --header 'Content-Type: application/json' \
  --data-raw '{
    "deviceid": YOUR_DEVICE_ID,
    "body": "Hello world!"
  }'
Note: Messages originate from a +44 number. Replies from the device appear in logs.

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View device SMS replies from logs

Query Data Engine CSR logs for SMS activity. 
curl --request GET \
  'https://dashboard.hologram.io/api/1/csr/rdm?deviceid=YOUR_DEVICE_ID' \
  -u apikey:YOUR_HOLOGRAM_API_KEY
The data field is Base64-encoded; decode to read the text payload.

Send TCP/UDP messages to a device

Dashboard bulk actions

Send SMS messages, or TCP or UDP cloud messages to your SIMs. No SIM limit.