node-red-contrib-chatbot

WhatsApp Cloud API talks to RedBot through an HTTPS callback (a self-signed certificate is **not** accepted). For local development we expose Node-RED through an [ngrok](https://ngrok.com/) tunnel; for production you'll point Meta at your real HTTPS hostname. ## 1. Expose Node-RED over HTTPS with ngrok Install ngrok and sign in (`ngrok config add-authtoken …`), then open a shell and run: ```bash ngrok http 127.0.0.1:1880 ``` ngrok prints a forwarding URL such as `https://abcd-1234.ngrok-free.app`. The full webhook RedBot listens on is: ```plain text https://<your-tunnel>.ngrok-free.app/redbot/whatsapp ``` Keep this terminal open while testing — every time you restart ngrok the URL changes (unless you have a reserved domain), and you'll have to update the webhook in Meta. > Tip: a paid ngrok plan gives you a static domain (`--domain my-bot.ngrok.app`) so you don't have to reconfigure the webhook on every restart. ## 2. Create the Meta app and WhatsApp Business Account (WABA) The Meta flow has been reorganised since the original guide. Two things must exist: 1. A **Meta Business Portfolio** (formerly "Business Manager") at [https://business.facebook.com/](https://business.facebook.com/). Create one if you don't have it — this is what owns the WABA, the app, and billing. 2. A **Meta for Developers app** at [https://developers.facebook.com/apps/create/](https://developers.facebook.com/apps/create/). ### 2.1 Create the app - Go to [https://developers.facebook.com/apps/](https://developers.facebook.com/apps/) → **Create app**. - Use case: **Other** → app type: **Business**. - Give it a name, attach the **Business Portfolio** from step 1. ### 2.2 Add the WhatsApp product In the app dashboard sidebar choose **Add product → WhatsApp → Set up**. This automatically provisions: - A test **WhatsApp Business Account** (WABA) - A **test phone number** (Meta-owned, you can use it free of charge to send messages to up to 5 verified recipients) - A **temporary access token** valid for 24 hours These three things are enough to get a "hello world" working. Production setup (real phone number + permanent token) is in [§6](https://www.notion.so/redbot/Whatsapp-Receiver-node-47c201b9b9e945fb909580bab9c31b87#6-going-to-production). ### 2.3 Collect the IDs Open **WhatsApp → API setup** in the app dashboard and copy: | Field in Meta UI | Field in RedBot | | ---------------------------- | ------------------------ | | Temporary access token | **Token** (Access Token) | | Phone number ID | **Phone Number ID** | | WhatsApp Business Account ID | **Business Account ID** | Also add your personal phone number to **To → Manage phone number list** so you can receive test messages. ## 3. Configure the webhook in Meta In **WhatsApp → Configuration**: 3. Click **Edit** next to _Webhook_. 4. **Callback URL**: `https://<your-tunnel>.ngrok-free.app/redbot/whatsapp` 5. **Verify token**: any arbitrary string, e.g. `redbot-test`. Remember it — you'll paste the same string into the RedBot config. 6. Click **Verify and save**. Meta hits your callback with a `GET` to confirm the verify token; if ngrok is up and Node-RED is running, the check passes. 7. Click **Manage** under _Webhook fields_ and **Subscribe** to at least the `messages` field. (You can add `message_template_status_update` later if you use templates.) ## 4. Configure the RedBot nodes In Node-RED drop three nodes and wire them: ```plain text Whatsapp Receiver → Text → Whatsapp Sender ``` Set the **Text** node to something like `Hello world!`. ### 4.1 Whatsapp Receiver Double-click and create a new configuration: - **Bot Name**: any label - **Token**: temporary access token from §2.3 - **Phone Number ID**: from §2.3 - **Business Account ID**: from §2.3 - **Verify token**: the exact string you typed in §3 step 3 ### 4.2 Whatsapp Sender Select the same bot configuration you just created. Deploy the flow. --- ## 5. Test it From the phone number you whitelisted in §2.3, send any text to the **test phone number** shown in the Meta dashboard. You should get `Hello world!` back, and the Receiver node should light up in the Node-RED debug panel. If nothing happens: - ngrok dashboard at [http://127.0.0.1:4040](http://127.0.0.1:4040/) shows incoming requests — useful to confirm Meta is calling you. - `/redbot/whatsapp/test` returns `ok` if the route is mounted. Visit `https://<your-tunnel>.ngrok-free.app/redbot/whatsapp/test` in a browser. - Check that your number is on the recipient allow-list — Meta silently drops messages to non-whitelisted numbers when using the test phone. --- ## 6. Going to production The 24-hour temporary token and the Meta test phone number are fine for development, but for production you need: ### 6.1 A real phone number on the WABA In the WhatsApp dashboard (or directly in Business Portfolio → **WhatsApp Accounts → Phone numbers**): 8. **Add phone number**. Use a number that is **not currently active on a personal/Business WhatsApp app** — if it is, fully delete the WhatsApp account on the device first. 9. Verify by SMS or voice. 10. Set the display name. The first display name goes through a Meta review (usually a few minutes to a day). ### 6.2 Business verification For anything beyond the test sandbox (sending to numbers that aren't on your allow-list, increasing tier limits, using templates with media) the owning Business Portfolio must complete **Business Verification** under **Business Portfolio → Security Center**. Plan for a few business days; you'll need a company registration document. ### 6.3 A permanent access token via a System User Temporary tokens expire after 24 hours and are not suitable for production. Generate a permanent one: 11. **Business Portfolio → Settings → Users → System users → Add**. Create a **System user** with role **Admin**. 12. **Assign assets**: add the WhatsApp app and the WABA, granting _Full control_. 13. Click **Generate new token**, pick the app, and select scopes **`whatsapp_business_messaging`** and **`whatsapp_business_management`**. 14. Copy the token (you won't see it again) and paste it into the **Token** field of the Whatsapp Receiver config in place of the temporary one. ### 6.4 Production webhook Replace the ngrok URL with your real HTTPS endpoint in **WhatsApp → Configuration → Webhook**. The verify token can stay the same. Don't forget the path is still `/redbot/whatsapp`. > If you run RedBot behind a reverse proxy, make sure the proxy forwards the raw request body — the receiver validates Meta's payload format before processing it. ### 6.5 App review (only if you let third parties install your bot) If your app stays internal (one Business Portfolio, one WABA), you don't need App Review. If you're building a product that other businesses connect to via Embedded Signup, submit the `whatsapp_business_messaging` and `whatsapp_business_management` permissions for review. --- ## 7. Reference - WhatsApp Cloud API version used by RedBot: `v22.0` (see [`lib/platforms/whatsapp/index.js`](https://www.notion.so/lib/platforms/whatsapp/index.js)). - Callback path: `/redbot/whatsapp` - Health check: `/redbot/whatsapp/test` returns `ok` - Meta docs: [https://developers.facebook.com/docs/whatsapp/cloud-api](https://developers.facebook.com/docs/whatsapp/cloud-api)