COINBASE_ADV_API_KEY& COINBASE_ADV_SECRET_KEY- on Coinbase, there are 2 ways to get API keys. Go to https://www.coinbase.com/settings/api to generate the API key (do not generate it through Coinbase Cloud)
Page is here: Sign in > Profile (upper right) > My preferences > API (top menu bar)
For permissions, do not select "withdraw permissions", as they are not needed and pose the most security risk
Copy the "secret" key and store it somewhere safe, as it will not be revealed again
COINBASE_PRO_API_KEY ,COINBASE_PRO_SECRET_KEY& COINBASE_PRO_PASSPHRASE- Getting these API keys may follow a different flow than above. In addition, you may also receive a "passphrase".