To update the JumpCloud RADIUS server public IP via the API, the following is needed:

• Your API Key
• The ObjectId of the RADIUS server
• The new IP address

To get a list of all RADIUS servers in the organization:
 

curl \
  -X 'GET' \
  -H 'Content-Type: application/json' \
  -H 'Accept: application/json' \
  -H "x-api-key: YOUR_API_KEY" \
  "https://console.jumpcloud.com/api/radiusservers/"

Note the RADIUS server _id from the results above to be updated, then, to update the RADIUS server with a given _id, replace :id in the below URL:
 

curl \
  -X 'PUT' \
  -H 'Content-Type: application/json' \
  -H 'Accept: application/json' \
  -H "x-api-key: YOUR_API_KEY" \
  -d '{"networkSourceIp":"YOUR.NEW.IP.ADDR"}' \
  "https://console.jumpcloud.com/api/radiusservers/:id"

For an example bash script that can be configured to run as a regular cron job on a system that is on a network using your dynamic public IP, see our support repository on GitHub.