In some chatbot systems, they can support Facebook, Instagram, and TikTok Messenger. When users comment with a specific keyword, it will trigger a predefined action, such as sending a PDF or an email.
May I check whether n8n can support this type of workflow?
Hi 
there
Yes N8n can do this type of workflows
Triggers: Watch Facebook and Instagram comments/messages (TikTok via API).
Keyword check: Use IF/Switch nodes to detect keywords.
Actions: Send emails, PDFs, or messages via supported nodes.
n8n can implement keyword triggered actions across multiple social channels, but TikTok may require custom API integration.
If your question is around triggering certain actions through your chatbot like sending emails etc, you can achieve this by using agent tool calls and setting your system prompt to understand when to trigger certain actions. Id be happy to build you and example chat agent which can perform tool call actions if you need