Apple watchOS shortcut that creates new *.md file instead of *.txt file?

I wanted to integrate my QuickNote Shortcut on the watch face of my apple watch to quickly capture thoughts into Obsidian.

As I am now using TaskNotes and Bases quite a lot, I would like to create a new file each time the shortcut is executed.

However, I encountered multiple problems creating markdown *.md files. It seems like Apple Shortcuts always tries to create a *.txt file when a text file is saved via shortcuts, especially from the watch:

The “append to file” step in my workflow runs into this bug. Changing it to the “set name” or “rename” workarounds works on macOS and iOS except watchOS as described here.

Finally I was able to get it to work, but only with the integration of the third party app Quick Capture for Obsidian.

Did anyone find a workaround for watchOS for creating new *.md files without third party apps?

Other users reported the same problem is this forum here but the thread was closed already for new posts)

As a (multi device) workaround: If you’re on MacOS 26 Tahoe, and don’t ever want .txt files in your vault, you could perhaps use a folder automation to change the filename extension once the file syncs to the Mac.

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Postprocessing on macOS (via Automator) or iOS (via Automation) is a good idea for a workaround :+1:

I would still be interested if it would possible to create markdown files directly from an Apple watch without third party apps or postprocessing.