Facebook Messenger

Flow

1. User messages your Page on Messenger.
2. Meta sends webhook events to your server.
3. Your server calls GeniStudio /api/v1/message.
4. Reply to the user through Messenger Send API.

Setup (Meta)

• Create an app, add Messenger product.
• Connect your Facebook Page.
• Generate a Page Access Token.
• Set up Webhooks: subscribe to messages on the Page.

Webhook (Express example)

// Similar to WhatsApp example; extract sender PSID and text
const sender = entry.messaging[0].sender.id;
const text = entry.messaging[0].message?.text;
// Forward to GeniStudio, then reply using `/me/messages?access_token=PAGE_TOKEN`.

Reply

POST https://graph.facebook.com/v20.0/me/messages?access_token=PAGE_TOKEN
{
  "recipient": { "id": "<PSID>" },
  "message": { "text": "<AI response>" }
}

Security: verify webhook, store tokens securely, handle rate limits.