Instagram Auto DM & Story Replies

I need a working integration between my Instagram Business account and Meta’s Graph API that will automatically:

— reply to every new DM with a text response chosen from a predefined keyword list that I will supply
— send a text reply when the account is tagged in a story

Nothing but plain-text messages are required. The reply must vary by keyword; if no keyword matches, a single fallback message is fine.

I already have Meta developer access but the app, webhooks, and tokens still need to be configured. Your job is to:

• set up or update the Meta app, enable the messages and story_mention webhooks, and finish the verification handshake
• write the webhook endpoint (Python, Node.js, or PHP—your choice) that inspects incoming payloads, looks up the keyword table, and fires back the correct reply through the Instagram Graph API
• make the keyword-to-response list easy for me to edit later (simple JSON, CSV, or a lightweight admin page)
• deploy the code on my VPS or give step-by-step hosting instructions
• walk me through generating and refreshing long-lived tokens

Acceptance: after hand-over I will send test DMs and story mentions; a correct reply within five seconds will mark the task complete.

Let me know your preferred language and estimated turnaround.