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Best answer

POST request is working via Postman, but not via Zapier Webhook custom request

  • April 7, 2025
  • 7 replies
  • 121 views

  • Beginner
  • 3 replies

I’ve setup a zap step that I’m expecting to update a custom value via a Webhooks by Zapier. I’ve set the header like I saw in other asks, it didn’t change the response. 

I’m getting an Unauthorized error, my testing API key works fine. Any ideas?

 

 

Best answer by Troy Tessalone

@rc27 

For the field Basic Auth, try like this:

API_KEY|

NOTE: Make sure to replace API_KEY with your actual API Key.

 

 

This post has been closed for comments. Please create a new post if you need help or have a question about this topic.

7 replies

Troy Tessalone
Zapier Orchestrator & Solution Partner
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  • Zapier Orchestrator & Solution Partner
  • 34032 replies
  • April 7, 2025

Hi ​@rc27 

Click the Basic Auth field label to see a tooltip about how to configure the field value by using a pipe |

 

Check the capitalization on your Header labels.

  • Accept and Content-Type
  • accept and content-type

 


  • Author
  • Beginner
  • 3 replies
  • April 7, 2025

Thanks ​@Troy Tessalone! I added a pipe ahead of the API key, and made my headers consistent, still getting the same error. 


Troy Tessalone
Zapier Orchestrator & Solution Partner
Forum|alt.badge.img+14
  • Zapier Orchestrator & Solution Partner
  • 34032 replies
  • April 7, 2025

@rc27 

Post these screenshots:

  • how your Zap step is configured now that it has been updated
  • the encountered error

Also, include the link to the app API endpoint documentation you used to configure the API request.


  • Author
  • Beginner
  • 3 replies
  • April 7, 2025

Troy Tessalone
Zapier Orchestrator & Solution Partner
Forum|alt.badge.img+14
  • Zapier Orchestrator & Solution Partner
  • 34032 replies
  • Answer
  • April 7, 2025

@rc27 

For the field Basic Auth, try like this:

API_KEY|

NOTE: Make sure to replace API_KEY with your actual API Key.

 

 


  • Author
  • Beginner
  • 3 replies
  • April 7, 2025

That did it. Thanks so much, ​@Troy Tessalone


  • New
  • 1 reply
  • April 11, 2025

Yo he realizado una configuración POST usando el método JSON.

  1. Vincule un formulario de LinkedIn
  2. Una vez llenado, esa información hace un POST a un endpoint privado.

Nota: Mi problema fue la autentificación solo me todo modificar el Headers, mi autenticación por API_KEY