Twitter automation - their ground rules

I. Ground Rules
Do!

• Build solutions that automatically broadcast helpful information in Tweets.
• Run creative campaigns that auto-reply to users who engage with your content.
• Build solutions that automatically respond to users in Direct Messages.
• Try new things that help people (and comply with our rules).
• Make sure your application provides a good user experience and performs well — and confirm that remains the case over time.
  

Don’t!

• Violate these or other policies. Be extra mindful of our rules about abuse and user privacy.
• Abuse the Twitter API or attempt to circumvent rate limits.
• Use non-API-based forms of automation, such as scripting the Twitter website. The use of these techniques may result in the permanent suspension of your account.
• Spam or bother users, or otherwise send them unsolicited messages.

PS last update in 2017 Nov....​