Photoshop api use

Hello,

I would like to use the Photoshop API for my project, but I'm not sure how to get started.

Our company already has an active Adobe Creative Cloud subscription (enterprise/team plan). I'd like to know:

1. Do we need to sign up for a separate API access, or is the Photoshop API included in our existing subscription?

2. Where can I obtain the API credentials (Client ID, Client Secret, etc.)?

3. Are there any additional costs or usage limits associated with the Photoshop API?

4. What is the correct process to set up a project on the Adobe Developer Console and enable the Photoshop API?

5. Is there any official documentation or quickstart guide you would recommend?

Any guidance or step-by-step instructions would be greatly appreciated. Thank you!