# Webhook A webhook listens for incoming events on a specified endpoint and triggers the next step in the workflow upon receiving relevant data. Webhooks listen for events from third-party apps. They are commonly used for tasks like payment collection, where the chatbot waits for a payment processor to notify it once the payment is received. ![](https://1047404187-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FeyvV4WfyYBGZdBoAuetg%2Fuploads%2FB0wksXB8dZoPqjzkc3gE%2FWebhook%201.png?alt=media\&token=57f1644f-825b-42a5-8f83-7bf32e336338) ### **Endpoint:** Set this webhook endpoint in the application that will send the event. When calling this endpoint, you must include the conversation\_key in the response payload. If it’s missing, the system will not consider the response successful. You can extract the conversation\_key from the Conversation URL variable. Before using the webhook block, add a JavaScript Action Block with the following code. ```json const conversation_url = "Conversation URL"; const conversation_url = "Conversation URL"; // Function to extract the conversation key from the URL function getLastPartOfUrl(url) { // Split the URL by slashes const parts = url.split('/'); // Return the last part return parts[parts.length - 1]; } // Retrieve the conversation key from the URL const conversation_key = getLastPartOfUrl(conversation_url); // Sets the conversation key into a new variable wn.setConversationVariable("conversation_key", conversation_key); // This variable will be used to push the conversation_key to the third-party app. ``` #### **Timeout:** The chat flow will wait for the webhook call for a set duration. If the webhook is not triggered within this timeframe, the chat flow will continue through the **FAILURE** path. {% hint style="info" %} **Set the duration between 1 and 300 seconds.** {% endhint %} #### **Response:** When a webhook response is received, you can assign specific fields to variables for storage. {% hint style="info" %} **You can map a maximum of 50 variables.** {% endhint %}