--- title: "[How-to Guides and Knowledgebase articles] - Creating an Automated Webhook Listener Using Webhooks and AWS Lambda" description: Creating an Automated Webhook Listener Using Webhooks and AWS Lambda url: https://www.contentstack.com/docs/developers/how-to-guides/creating-an-automated-webhook-listener-using-webhooks-and-aws-lambda product: Contentstack doc_type: how-to-guide audience: - developers version: unknown last_updated: 2026-03-25 --- # [How-to Guides and Knowledgebase articles] - Creating an Automated Webhook Listener Using Webhooks and AWS Lambda This page explains how to set up an automated webhook listener by connecting Contentstack Webhooks to an AWS Lambda function via API Gateway. It is intended for developers who want to automatically update entry fields when changes occur, and should be used when implementing webhook-driven automation with AWS services. ## Creating an Automated Webhook Listener Using Webhooks and AWS Lambda **Note: **This page is no longer maintained, and the underlying code may be outdated or unsupported. It may be removed in a future release. To learn how to automate workflows in Contentstack, refer to the [Connectors](/docs/developers/automation-hub-connectors) documentation. The combination of AWS Lambda and Contentstack [Webhook](/docs/developers/set-up-webhooks/about-webhooks) can be used to simplify working with the entries. You can use them to automatically update a particular field of an entry when any changes are made to it. In this guide, we will discuss the steps for creating an automated system that will do just that. **Process overview**: We will [create a content type](/docs/developers/create-content-types/create-a-content-type) and [add an entry](/docs/content-managers/working-with-entries/create-an-entry) to it. When the entry is updated (Date and Priority fields), a webhook will trigger and invoke the Lambda Function. The Lambda Function will then auto-update a specific field (Sort order, in our example) in the entry. ## Prerequisites - Basic knowledge of AWS Lambda - Working knowledge of AWS API Gateways - Access to the AWS environment - [Contentstack account](https://app.contentstack.com/) ## Steps for Execution - [Create a content type and add an entry](#create-a-content-type-and-add-an-entry) - [Create an AWS Lambda Function](#create-an-aws-lambda-function) - [Create an API Gateway](#create-an-api-gateway) - [Deploy your API](#deploy-your-api) - [Create a Webhook in Contentstack](#create-a-webhook-in-contentstack) - [Try it out](#try-it-out) Let's get started! ## Create a Content Type and Add an Entry The first step is to create a content type and add an entry to it. For this exercise, we will create a content type with specific [fields](/docs/developers/create-content-types/about-fields) as listed below: **Title** - **URL** - **Date** - **Select field** with name **Priority** (display type as **Radio**) - **Single Line Textbox** with name **Sort order** Once you have created the content model with the above configuration, add an entry inside it. This is what the entry will look like: **Note**: Do not add anything in the **Sort order** field yet, keep it blank for now. It will get auto-updated when we make changes in the Date and Priority fields. With this, we have the essentials ready, let's move on to creating a Lambda Function. ## Create an AWS Lambda Function Perform the following steps to set up your AWS Lambda function: Login to your **AWS Management Console** and select **Lambda** from the **Service **list. - Click on the **Create Function** button and then the **Author from Scratch** option. - Configure the lambda based on your requirements. Choose **Node.js 12.x** as your run-time language and click on the **Create function** button. - AWS Lambda offers an inline code editor. You can write your lambda code here or alternatively upload the code. For our example, we have created a sample code. Download the code from our [GitHub](https://github.com/contentstack/webhook-listener-using-lambda-function) repo. - Once you get the code, install the required dependency as mentioned in **package.json** and then upload it on Lambda by selecting the **Upload a .zip file** option from the **Code entry type** drop-down. Keep **Handler** as i**ndex/index.handler** and click on **Save**. This is how it will look when you upload the code in the editor: - Once we have uploaded the code in the editor, let's now set up the **Environment variables** by adding the **Stack API key, **your [Contentstack region](/docs/developers/contentstack-regions) (US, EU, Azure NA, or Azure EU), and **Stack Management Token** as follows: - - Once you add the environment variables, click **Save**. We now have set up our Lambda Function. Let's move ahead and create the API Gateway through which our Lambda Function will be invoked. ## Create an API Gateway Execute the following steps to create the API Gateway: Login to **AWS Management Console** (if you have logged out) and select **API Gateway** from the **Services** list. You can also type “API” in the search box to locate it quickly as shown: - Click on the **Getting started** or the **Create API button** (depending on whether you have an API already configured or not). - On the **Choose an API type** page, go to the **REST API** option (the public one) and click on **Build**. - On the next screen, ensure that **Choose the protocol** section has **REST** selected and the **Create new API** section has **New API** selected. Enter the API name and a description (optional) in the **Settings** section and click on **Create API**. - On the next page, from the **Actions** drop down in **Resources**, select **Create Method**. - From the resultant drop-down, select **POST** and click on the checkmark. - Select your Lambda function by typing the name of your function (it auto-populates) in the **Lambda Function** field. Ensure the **Use Lambda Proxy integration** option is checked as shown below and click on **Save**: - You'll get the **Add Permission to Lambda Function** pop-up, click on **OK**. With these steps, we have created the required API Gateway. ## Deploy your API Next, we need to deploy our API. Follow the steps given below: From the **Actions** drop-down in **Resources**, select the **Deploy API** option. - Select **[New Stage]** in the **Deployment stage** and enter “prod” (or anything you like to identify this stage with) in the **Stage** name. - Click on the **Deploy** button. - On the next screen, you'll get your deployed API under **Invoke URL**. We'll use this URL in the next step when we create a webhook to initiate notifications to our Lambda function. Once you have deployed your API, your Lambda Function will look similar to this: That's it! We have created the Lambda Function and have deployed the API to invoke it. ## Create a Webhook in Contentstack Let's now create a webhook in Contentstack to invoke the Lambda Function through the API that we just created. To do this, log in to your [Contentstack account](https://app.contentstack.com/#!/login) and follow the steps given below: Navigate to your stack, click on the “Settings” icon on the left navigation panel, and click on **Webhooks**. You can also use the shortcut keys “alt + W” for Windows OS users, and “option + W” for Mac OS users to access webhooks. - On the **Webhook** page, click on **+ New Webhook**. - On the **Create Webhook** page, fill up the **Name** field (for example, WebhookListener). In the **URL To Notify** field, enter the URL that you generated when you deployed your APIs, in the previous step. - Scroll down to the **Conditional View** section for creating a trigger for the webhook as shown below: - Select the **Enable Webhook** checkbox option and **Save** your webhook settings. Your webhook is now ready to invoke the Lambda Function when an entry in the Webhook listener content type is updated. ## Try it Out The entire set up is done and you are ready to try this out. Navigate to your entry and try changing the **Date** and **Priority** fields. - Save your entry. Upon saving, the webhook triggers. It then invokes the Lambda Function through the APIs and the **Sort order** field gets updated automatically. - Hard refresh (Ctrl + Shift + R) the entry page and you should see the changes as shown below: **Additional Resource**: You can also refer to our guides on how you can use [Contentstack Webhooks with AWS Lambda](/docs/developers/set-up-webhooks/webhook-integrations) to automate several content management tasks. ## Common questions ### Is this guide still supported? No. **Note: **This page is no longer maintained, and the underlying code may be outdated or unsupported. It may be removed in a future release. ### What triggers the Lambda function in this setup? When the entry is updated (Date and Priority fields), a webhook will trigger and invoke the Lambda Function through the API Gateway. ### What field is auto-updated in the example? The Lambda Function will then auto-update a specific field (Sort order, in our example) in the entry. ### Where can I find a maintained alternative for automation in Contentstack? Refer to the [Connectors](/docs/developers/automation-hub-connectors) documentation.