Yes, the file with the test you need to create somehow.
If you're looking for an YAML file example - check
Taurus tool documentation, the minimal one would be something like:
execution:
- concurrency: 100
ramp-up: 1m
hold-for: 5m
scenario: quick-test
scenarios:
quick-test:
requests:
-
http://blazedemo.com
BlazeMeter supports both.
The easiest way of creating a test plan is just recording it using BlazeMeter Chrome Extension.
Once you have the test script you can
upload it and use the relevant API endpoints for running the test.