⚡ Java WhatsApp Bot with Vonage Function

Simple bot to answer WhatsApp messages.

🧰 Usage

GET /

HTML form for interacting with the function.

POST /

Receives a message, validates its signature, and sends a response back to the sender.

Parameters

Name	Description	Location	Type	Sample Value
Content-Type	Content type of the request	Header	application/json	N/A
Authorization	Webhook signature for verification	Header	String	Bearer <signature>
from	Sender's identifier.	Body	String	12345
text	Text content of the message.	Body	String	Hello!

All parameters are coming from Vonage webhook. Exact documentation can be found in Vonage API Docs.

Response

Sample 200 Response:

{
  "ok": true
}

Sample 400 Response:

{
  "ok": false,
  "error": "Missing required parameter: from"
}

Sample 401 Response:

{
  "ok": false,
  "error": "Payload hash mismatch."
}

⚙️ Configuration

Setting	Value
Runtime	Java (18)
Entrypoint	src/Main.java
Permissions	any
Timeout (Seconds)	15

🔒 Environment Variables

VONAGE_API_KEY

API Key to use the Vonage API.

Question	Answer
Required	Yes
Sample Value	62...97
Documentation	Vonage: Q&A

VONAGE_API_SECRET

Secret to use the Vonage API.

Question	Answer
Required	Yes
Sample Value	Zjc...5PH
Documentation	Vonage: Q&A

VONAGE_API_SIGNATURE_SECRET

Secret to verify the webhooks sent by Vonage.

Question	Answer
Required	Yes
Sample Value	NXOi3...IBHDa
Documentation	Vonage: Webhooks

VONAGE_WHATSAPP_NUMBER

Vonage WhatsApp number to send messages from.

Question	Answer
Required	Yes
Sample Value	+14000000102
Documentation	Vonage: Q&A