Point your browser to:
https://www.nicsys.eu/jiracula/jiracula.user.js
Accept script installation.
It should now appear in Tampermonkey dashboard.
Now go to Jira -> Tempo -> My work.
You should see the jiracula button when you are on tempo screen:

If it doesn't appear immediately after install, you might need to disable + re-enable the script in Tampermonkey dashboard.

3. Prepare your JSON file.

Caution:

It must end with ".jrcl.json" for Jiracula to see it.
All task codes must exist (it won't create your tickets !!).
Entries with non-existing task codes will be skipped.

[
  {
    "Date": "01/10/25",
    "TaskCode": "SMEIMKT-12345",
    "Duration": 1,
    "Description": "Hello world"
  },
  {
    "Date": "01/10/25",
    "TaskCode": "SMEIMKT-56789",
    "Duration": 2.5,
    "Description": "Did some testing of Jiracula and I love it."
  },
  {
    "Date": "01/10/25",
    "TaskCode": "SMEIMKT-56789",
    "Duration": 1,
    "Description": "Meeting with colleagues about the wonders of Jiracula."
  }
]

4. Click Jiracula button, get your ".jrcl.json" file.

Let it do its magic until the progress bar dissapears.
Now RELOAD THE PAGE
You should now see your entries in your timesheet.