Welcome! This tool will help you import CSV files into Firefly III. It works by reading your CSV file (possibly, according to a pre-generated configuration file) which will be submitted to the API endpoints of your Firefly III installation.
This tool is sparsely documented, you can find all the details you need in the documentation. Any links you see to the docs will open in a new window or tab.
In order to get access to your Firefly III installation, you will need to submit a valid Client ID. This is a number.
If you don't have one, you must create in your profile under "OAuth". Make sure you remove the checkbox under "Confidential".
The callback URL for this installation is