Formidable API is a technical bridge that connects WordPress forms to any external service supporting REST APIs through webhooks. It allows developers to send form entries to customer databases, update mailing lists, or sync data across multiple platforms. This add-on functions as a powerful integration hub for advanced data-driven applications.
WPExclusive members get access to Formidable API as part of a full plugin and theme library — plans from $9.99/month. See the full Formidable Forms collection →
What Is Formidable API?
Formidable API is developed by Formidable Forms and is an automation plugin for WordPress. It belongs to the automation category on WPExclusive, alongside other tools for developers and site engineers. The plugin acts as a Webhooks add-on, enabling seamless communication between site forms and third-party RESTful APIs.
It solves the problem of siloed data by pushing form entries to external CRMs, databases, or notification systems. It is designed for developers who need to create custom-coded solutions or integrate with complex RESTful architectures.
Formidable API Features
The core feature set is built around data synchronization and external triggers.
REST API Webhooks
The plugin allows you to send form data when an entry is created, updated, deleted, or even saved as a draft. It supports Basic Authorization for secure requests, ensuring that your data transfers safely between WordPress and your external endpoints. This is essential for automation workflows involving high-volume data handling.
Data Synchronization and Mapping
Users can map form fields to specific API keys using custom key/value pairs. Formidable API supports default shortcodes as values, allowing for dynamic data passing such as user IDs or timestamps. It also handles complex processes like sending entries between different Formidable forms across separate web properties.
External Publishing with Shortcodes
If you have created a form or View on one WordPress site, you can use the frm-api shortcode to display that content on a second site. This feature effectively turns one WordPress installation into a data source for multiple satellite websites. It reduces the need for duplicate form creation and centralizes entry management.
Pricing
Check current pricing on the Formidable API sales page — WPExclusive members access it as part of their plan.
| Plan | Price | Sites | Includes |
|---|---|---|---|
| Standard Individual License | Varies by Bundle | 1-3 Sites | Add-on Access |
| WPExclusive Membership | From $9.99/month | Unlimited | Formidable API + full library |
For developers managing multiple sites, a WPExclusive membership covers Formidable API plus hundreds of other plugins and themes — usually less than one premium license.
Latest Version
The plugin receives regular updates to ensure compatibility with the WordPress REST API and the core Formidable builder. WPExclusive updates plugin files promptly after each release.
How to Install
- Download the Formidable API .zip from your WPExclusive member account
- In WordPress: Plugins → Add New → Upload Plugin
- Select the .zip and click Install Now → Activate
- Navigate to Formidable → Global Settings → API tab to find your API key
- Configure your Webhook form actions within individual form settings
Use Cases
CRM and Lead Integration
Automatically push lead data from WordPress forms directly into a custom CRM using the automation features. This eliminates manual data entry and ensures sales teams have real-time access to prospect information.
Cross-site Form Publishing
Agencies can build a central “master” form on one domain and display it across multiple client sites via the REST API. All submissions are funneled back to the central master site for unified management.
Zapier Workflows
Use the API to connect with Zapier or Make.com to trigger thousands of third-party apps. This is ideal for sites that need to send form data to non-standard platforms that do not have a dedicated WordPress plugin.
Agencies and Developers Managing Multiple Client Sites
WPExclusive provides a single source for all Formidable add-ons, making it easier for agencies to manage budgets while deploying advanced data-driven applications for clients.
vs Alternatives
| Feature | Formidable API | Gravity Forms Webhooks |
|---|---|---|
| Trigger on Delete | ✅ Yes | ❌ Limited |
| Cross-Site Shortcodes | ✅ Yes | ❌ No |
| REST API Integration | ✅ Native | ✅ Native |
| Starting Price | Part of Elite | Part of Pro/Elite |
| Available on WPExclusive | ✅ Yes | ✅ Yes |
Browse the full automation plugins on WPExclusive →
Pros and Cons
✅ Strengths
- Supports complex data mapping with key/value pairs and dynamic shortcodes
- Allows displaying forms and Views on remote, non-origin WordPress sites
- Comprehensive triggers including entry creation, updates, and deletions
⚠️ Limitations
- Requires familiarity with RESTful concepts and Basic Authorization
- Complex multi-form logic requires additional add-ons like Form Action Automation
- Developer auto-updates require an active license key. WPExclusive publishes updates manually when new versions are released.
Is Formidable API GPL Licensed?
Yes. Formidable API is distributed under the GNU General Public License (GPL) — the same license that governs WordPress itself. GPL gives any user the legal right to use, study, share, and redistribute the software. This is the legal framework that makes WPExclusive’s membership model possible.
WPExclusive distributes 100% original, unmodified files — the same release the developer publishes. No injected code, no alterations, no security risks.
Get Formidable API on WPExclusive
WPExclusive membership starts at $9.99/month, $87/year, or $149 lifetime — giving you Formidable API plus every plugin and theme in the library, on unlimited sites.
Explore the full Formidable Forms collection → or browse all WordPress plugins →
Frequently Asked Questions
What does Formidable API do?
Formidable API is an automation add-on that connects WordPress forms to external RESTful services. It allows Formidable API to send data to CRMs, databases, and other sites via webhooks.
Is Formidable API free?
The plugin is a premium extension of Formidable Forms. While a lite version of the builder exists, the API features are premium and can be accessed via WPExclusive from $9.99/month.
What is the latest version of Formidable API?
The plugin is actively maintained — WPExclusive members always receive the most current release as soon as it is verified and uploaded.
How much does Formidable API cost?
It is typically bundled with high-tier Elite developer plans. Via WPExclusive, it is included in plans from $9.99/month.
Is it legal to use Formidable API via WPExclusive?
The plugin is GPL licensed, which explicitly permits redistribution. WPExclusive provides original, unmodified files — fully within GPL terms.
Can I use Formidable API on multiple sites?
Yes, a WPExclusive membership allows you to use the plugin on unlimited websites, making it a cost-effective solution for developers.
