For WordPress agencies, time is margin. A five-minute task doesn’t seem like much until it’s repeated across 30 clients. Suddenly, a full day is gone. That’s where automation earns its place. 

WordPress automation reduces repetitive manual work and frees developers and account managers to focus on high-value tasks. It’s also a competitive advantage. Agencies that respond faster with proactive support are better positioned to retain and grow accounts.

In this article, we explore one powerful automation tool: the webhook. A webhook is a way to make WordPress sites talk to other software automatically. A client site updates; your CRM gets the memo. A malware scan finds malicious code; your Slack lights up. 

We’ll show you how it works, what you can do with it, and how to add webhooks to your WordPress sites. 

What Is a Webhook?

A webhook is a way for one system to automatically notify another when something important happens. Technically, it’s an HTTP POST request triggered by an event: a plugin update, a form submission, or a new blog post, for instance. When that event fires, the system sends a small packet of data to a URL you’ve defined. 

Unlike tasks scheduled with WP Cron or Action Scheduler, webhooks respond instantly to events when they happen. They don’t waste resources checking for changes because they only act when there’s something to do. This “fire-and-forget” strategy is called event-driven automation. 

For WordPress agencies, webhooks enable real-time workflows across tools and teams. Let’s say a plugin update fails on a client site. A webhook could instantly trigger a Slack alert and open a Jira ticket for your dev team to investigate. The data flows where it needs to, automatically.

It’s important to distinguish webhooks from traditional Application Programming Interfaces (API) like WordPress’s REST API. APIs let systems ask for data or give commands. Webhooks do the opposite: they push data out the moment something changes. That makes them ideal for fast, low-overhead integrations in busy agency environments.

The Anatomy of a Webhook

Webhooks are one of the most straightforward ways to connect WordPress to other apps and services, but webhook creation will make more sense if you understand a bit of what’s going on under the hood. 

The webhook process starts with an event, like a blog post being published, that tells the system, “something just happened.” This event triggers an HTTP request to a specific URL you’ve configured, known as the endpoint. For instance, you could configure a WordPress webhook to send information to Airtable through an endpoint set up in your account. 

The request includes a payload, structured data that describes the event. The payload is typically sent in JSON format. For example:

{
  "event": "post_published",
  "post_title": "How to Use Webhooks in WordPress",
  "post_url": "https://pressable.com/blog/wordpress-webhooks",
  "author": "Jane Smith",
  "post_date": "2025-04-24T10:32:00Z"
}

Alongside the payload, webhooks often include HTTP headers to provide context or verify the request’s authenticity. Common headers might specify the content type (application/json) or include a signature used to validate the request’s origin.

Here’s what a webhook would look like if you sent it manually with curl.

curl -X POST https://hooks.example.com/webhook-endpoint \
  -H "Content-Type: application/json" \
  -H "X-Webhook-Signature: abc123hashvalue" \
  -d '{
    "event": "post_published",
    "post_title": "How to Use Webhooks in WordPress",
    "post_url": "https://pressable.com/blog/wordpress-webhooks",
    "author": "Jane Smith",
    "post_date": "2025-04-24T10:32:00Z"
  }'

Use Cases for WordPress Webhooks

Webhooks are quick to implement, which makes them an excellent automation and integration tool for busy agencies. You’ve probably thought of several use cases already, but here are a few more you may not have considered.

• Automated Lead Management: Send new contact form submissions directly to a sales CRM and notify the team via Slack.
• Streamlined Client Onboarding: Trigger user profile creation, email list additions, and project management task generation when a new client registers.
• Real-time E-commerce Sync: Instantly update external inventory systems or notify fulfillment partners on order creation or status changes.
• Content Syndication: Automatically push newly published blog posts to social media scheduling tools or other platforms.
• Enhanced Reporting: Send key site events (user registrations, important form submissions) to external analytics or business intelligence tools.

These automations save significant time, minimize errors, and allow agencies to focus on higher-value tasks.

Adding Webhook Functionality to Your WordPress Sites

WordPress lacks native webhook functionality; however, several plugins offer advanced automation capabilities, including the ability to trigger webhooks based on events from WordPress sites. Typically, these plugins deliver basic features for free, while the premium versions allow agencies to create custom webhook automations with payloads that can be tailored to any integration. 

WP Webhooks

WP Webhooks is a specialized plugin designed for WordPress automation and webhook integration. Its free version is quite capable. Users can create an unlimited number of outgoing “Triggers” based on core WordPress events and actions from popular plugins. 

The premium version offers extensive configuration options, allowing you to define the HTTP request method, select the data format, and establish various authentication methods. The ​​premium “Flows” feature is useful for agencies that need to build more complex, multi-step automations with conditional logic.

AutomatorWP

AutomatorWP also uses a trigger-action system to create automated workflows. It supports a wide range of automation capabilities, including pre-configured triggers for popular WordPress plugins like FluentCRM, Gravity Forms, and Easy Digital Downloads, as well as integrations with third-party services like HubSpot, Notion, and OpenAI. 

AutomatorWP’s webhooks functionality is provided by a premium add-on, which you can use to send data to any application or service that supports incoming webhooks. 

Webhooks Beyond WordPress with Pressable

Webhooks in WordPress are useful, but what about events that happen outside the content management system? You might want to trigger a webhook when a site is successfully restored from a backup or a Git deploy fails. These actions are the purview of the hosting platform, not the CMS, but it’s useful information for agencies to feed into dashboards and site monitoring platforms. 

That’s why Pressable makes a wide range of webhooks available to our hosting clients. When an event happens on the hosting platform, a webhook is triggered to send relevant information to your system. We support over 50 webhooks for events as diverse as new site creation, edge cache status updates, theme and plugin activations, and backup activities. 

Webhooks are just one aspect of Pressable’s commitment to supporting developer and agency workflows. We also provide an extensive REST API for controlling various standard hosting operations, SSH access, and support for the WP-CLI command-line tool. 

Pressable is a managed WordPress hosting platform built for agencies. To learn more, schedule a demo and explore Automattic for Agencies, a partner program designed for agencies like yours.