Efficiently create device with IP address via API

[llamafilm]

I'm trying to build a script to help add batches of devices into Netbox when we commission a new room. This process typically involves adding 10-15 new devices, each with a power port connection, ethernet switch connection, and primary IP. I'm not seeing a way to create the device with a single API call; is this possible? The API schema docs show that primary_ip4 is a valid key for a POST request to /api/dcim/devices, but when I try it fails with error: "The specified IP address (192.168.5.1/24) is not assigned to this device."

The interface is created automatically because it's part of the Device Type, so I was hoping this could all be handled in a single API call. The alternative I found is convoluted and takes several API calls:

1. Create new device (POST /api/dcim/devices) and get its ID
2. Lookup interface filtered by name and device ID (GET /api/dcim/interfaces?device_id={x}&name={y})
3. Attach IP to Interface (PATCH /api/ipam/ip-addresses/{id})
4. Assign Primary IP (PATCH /api/dcim/devices/{id}

Then I would have to do a similar process to connect the power cable and ethernet cables.

[abhi1693]

You can only attach an IP address as primary if it exists on one of the interfaces for the device. So, your API calls look correct

[jburg379]

How did you get your script to automatically make new devices? I wrote a scrip to scan the network make the IPs on the netbox UI and its supposed to make new devices to go with the IPs but I keep getting this error.
{"role":["This field is required."]}

[llamafilm]

The error is clearly stated, so I'm not sure what you're asking? You need to define a role when creating a device.