You can find your client_ID & client_Secret on your dashboard.
Step 1: Navigate to your Profile Page. Make sure the top right toggle is on 'MY ACCOUNT' and your left menu is on the 'ME' tab.
Your account should have SEND-AND-RECEIVE Permissions.
Step 2: Reveal your Client Keys. Navigate to the 'Reveal Keys' section of your profile. Click on the eye symbols to reveal or hide your keys.
Step 3: Remember to oauth your account. You only have to do this once. Here's a guide for that.
IMPORTANT NOTICE: Please keep these keys secure. If you need to send it via email, we recommend using an encrypted service like Virtu. If your keys are compromised at any point, please contact us immediately.