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Formidable API

v2.0.2Unlimited sites

Formidable API is a WordPress plugin that connects Formidable Forms to external services such as CRMs, email marketing tools and payment gateways.

Product facts

Version
2.0.2
Released
14 October 2026
Type
Plugin
Licence
GPL
Included in
Every plan, or $0.90 on its own

Overview

Forms often collect information that then has to be copied by hand into another system. Formidable API removes that step. When someone submits or updates a form, the plugin can pass the data to a CRM, an email marketing tool, a payment gateway or a custom application, and it can start actions such as notifications or data syncing.

Setup happens in a dashboard that does not require coding, so it suits users with different levels of technical skill. You choose the request type, pick an authentication method and review the logs to see what was sent and received. The plugin is designed to work alongside Formidable Forms, which makes it a fit for sites already built on that form builder.

Features

  • External service connections: Link your forms to CRMs, email marketing tools, payment gateways and other services, so submitted data flows to the systems you already use instead of being copied over manually.
  • Submission-based triggers: Set triggers that run when a form is submitted. They can start actions like notifications, data syncing or custom API calls, so routine follow-up tasks happen automatically.
  • Configurable API requests: Set up GET, POST, PUT and DELETE requests to control how your form data interacts with an external system, giving you direct say over each exchange.
  • Real-time data syncing: Keep external databases and applications current by syncing data whenever users submit or update forms, rather than waiting for a manual export or import.
  • Multiple authentication methods: Connect to APIs using API keys, OAuth or other authentication protocols, which gives you flexibility when working with services that each require a different kind of access.
  • Secure data handling: The plugin is built with security best practices in mind, so sensitive user information is transmitted safely between your forms and the connected platforms.
  • Code-free configuration dashboard: Set up integrations and automation from a straightforward dashboard. No coding is required, and the interface is designed for users of all technical levels.
  • Logging and debugging: Built-in logs record API requests and responses, so you can monitor how integrations behave and track down problems when a connection does not work as expected.

Best for

  • Sites already using Formidable Forms
  • Businesses sending form data to CRMs and marketing tools
  • Developers and freelancers building form integrations for clients

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