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Formidable API

v2.0.2Unlimited sites

Formidable API is a WordPress plugin for connecting Formidable Forms with external services.

Product facts

Version
2.0.2
Released
14 October 2026
Type
Plugin
Licence
GPL
Included in
Every plan, or $1.03 on its own

Overview

Formidable API lets Formidable Forms exchange data with external services, including CRM systems, marketing platforms, and custom applications. It supports GET, POST, PUT, and DELETE requests, so you can choose how a form interacts with another system. This can help reduce manual handling of submitted information and connect form activity with broader workflows.

Configure requests and authentication in the plugin's dashboard, then use form submissions to trigger actions such as notifications, data syncing, or custom API calls. The plugin also logs requests and responses to help you review activity and troubleshoot integration issues. It is designed for WordPress sites that use Formidable Forms and need their forms to work with other applications.

Features

  • Configurable API requests: Set up GET, POST, PUT, or DELETE requests to control how form data is sent to or handled by an external system.
  • Submission-based triggers: Use form submissions to start actions such as notifications, data syncing, or custom API calls.
  • External service connections: Connect Formidable Forms with CRM systems, marketing platforms, or custom applications to exchange form data.
  • Authentication options: Connect to APIs using API keys, OAuth, or other authentication protocols supported by the service.
  • Request and response logs: Review logged API requests and responses to monitor activity and investigate integration issues.
  • Data synchronization: Sync form data with external databases and applications when users submit or update forms.

Best for

  • WordPress sites using Formidable Forms
  • Businesses connecting forms to CRM systems
  • Developers linking forms with custom applications

Changelog

Version 2.0.2 — 13 October 2026

  • New Add-ons that ship their own MCP support (Formidable, Pro, Views, Landing Pages, Coupons) now take over automatically. The API add-on only fills in what a plugin is missing. When all are up to date, the MCP setting no longer shows in the API settings.
  • New Pass a user_id when creating or updating an entry to set its owner. Only users who can manage entries can do this.
  • New The form actions list supports page and page_size.
  • New Deleting a style now moves the forms that used it to the default style. The response lists them in reassigned_form_ids.
  • Fixed Outbound webhook JSON now escapes a lone line break in a value. This fixes line breaks running together in services like Twilio.
  • Fixed Notice on WordPress older than 6.9 ("Call to undefined function wp_get_ability()") when registering the MCP server.
  • Fixed Updating an entry through the API copied the parent post ID onto repeater rows. This broke the entry's post and Views, and removing a row could delete the post.
  • Fixed Style, form style, and application endpoints accepted an ID from a different post type. Deleting a "style" could trash an unrelated page.
  • Fixed Saving a view layout failed on sites where the layouts table was made by an earlier version of the add-on. The table is now repaired.
  • Fixed The form actions type filter did nothing. An unknown action type was saved as another type. Both are fixed.
  • Fixed Views created through MCP now sanitize map, calendar, timeline, and table options the same way as updates.
  • Fixed Getting a trashed or invalid view now returns a "Invalid view ID" error.
  • Improved Deleting a view through the API now moves it to the trash instead of deleting it permanently.
  • Improved MCP activity log only lists Formidable abilities, not other plugins' abilities.

Earlier versions

  • 2.0.1 (17 August 2026): 1 new
  • 2.0 (11 August 2026): 5 new, 1 fixed, 2 security
  • 1.18 (11 December 2024): 1 new, 3 fixed

FAQ

Is Formidable API free?

The code of Formidable API is licensed under the GPL, so anyone may use, change and share it. GPL 247 is a paid service: a plan or a purchase of Formidable API gives you the download and its updates. The developer's own support, licence key and online services are not included.

Which version of Formidable API is this?

Version 2.0.2, released 14 October 2026. New versions appear here when the developer publishes them.

How do I update Formidable API?

Install GPL 247 Updater on your site and paste your key from My Account. It installs new versions of Formidable API for you.

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