端的次郎 is a free Chrome add-on developed by Takara Hamaguchi. It falls under the category of Browsers and is specifically classified as an Add-ons & Tools subcategory. This add-on allows users to easily simplify text with just a few simple steps.

With 端的次郎, users can:

1. Click on the "端" icon in the add-on bar (it is recommended to keep it fixed for convenience).

2. Input the text that needs to be simplified.

3. Click the "Simplify" button.

It's important to note that 端的次郎 requires an OpenAI API key as it utilizes the ChatGPT API internally. Users will need to obtain an API key from OpenAI to use this add-on. However, future updates may eliminate the need for users to provide their own API key.

Please be aware that the text inputted into the ChatGPT API is currently not used for training the ChatGPT model. Nevertheless, there is a possibility of changes in future terms and conditions or internal monitoring of data by OpenAI. The developer, Takara Hamaguchi, does not assume any responsibility for any confidential information leakage.