Meta API Comment-to-DM Automation

I’m expanding an internal Instagram automation tool and need an extra pair of hands that knows the Meta Graph API inside out. My in-house developer has the core app running; what’s left is wiring the API so that every time a follower leaves a comment containing specific keywords, the system instantly turns that comment into a direct message.

Here’s the workflow we must nail down:

1. Authenticate our business account through the latest Meta Graph endpoints, ensuring all required permissions (pages_manage_metadata, instagram_manage_messages, etc.) are granted and approved.
2. Configure real-time webhooks so comment events hit our server with minimal latency.
3. Parse the comment, match it against a keyword list (I’ll provide or refine it with you), then send a predefined DM back to that user.
4. Return meaningful success/failure logs we can view in our dashboard.

Tech context: the existing codebase is Node.js with TypeScript, MongoDB, and Docker, but I’m open to small polyglot snippets if you can justify them. Clear, commented code and a quick read-me are a must so my dev can maintain it after hand-off.

Acceptance is simple: you demo a live post; I comment with a trigger word; I receive the correct DM within seconds and see the event recorded in the logs. If that happens reliably, we’re done.