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Question

Cloudflare blocking Zapier Formidable Forms API

  • March 19, 2026
  • 1 reply
  • 10 views

I'm trying to connect Formidable Forms to Zapier, but authentication fails because Zapier receives a Cloudflare challenge page instead of the API JSON response.

Setup:

  • Site: https://XXXXXXXXX.us

  • API endpoint: https://XXXXXXXXX.us/frm-api/v1/forms

  • Endpoint works correctly in browser (returns valid JSON)

  • Correct API key and URL confirmed

Error:

What I’ve tried:

  • Reconnected Zapier account multiple times

  • Verified API is working

  • Created Cloudflare WAF rule to skip security checks for /frm-api/* (including managed rules, rate limiting, browser integrity, etc.)

  • Placed rule at highest priority

This post has been edited by a moderator to remove personally identifiable information (PII). Please remember that this is a public forum and avoid sharing personal or potentially sensitive details.

1 reply

Troy Tessalone
Zapier Orchestrator & Solution Partner
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  • Zapier Orchestrator & Solution Partner
  • March 20, 2026

Hi ​@icpdaswebdev 

Help links for using Formidable Forms in Zaps: 

https://formidableforms.com/knowledgebase/formidable-zapier/

https://zapier.com/apps/formidable/integrations#help

 

Prerequisites

To use the Formidable Forms app on Zapier, you must have:

  • A Formidable Forms Business license or higher.
  • The Formidable Forms Zapier add-on installed and activated on your WordPress site (available through Formidable → Add-Ons page after purchasing a qualifying license).
  • Your Formidable Forms API key, which can be found at Formidable → Global Settings → API tab in your WordPress admin. 
  • WordPress permalinks not be set to default. If you need to use any permalink structure other than the default "Plain" option (Settings → Permalinks in WordPress).