IFTTT

IFTTT can make an HTTP request, and that is all it takes: one POST to /v1/jobs with a key in the header, a template name and your fields. Then any applet trigger prints the label.

How to set it up

1. 01Create a key in the dashboard under Keys.
2. 02In IFTTT, add an HTTP step: POST https://instntprint.com/v1/jobs, header Authorization: Bearer your-key.
3. 03Body: printer, template and data for the label. Run it once and read the answer.