Accessing URL Query Parameters from POST Webhook in Decisions

RichterBell

I’m setting up a webhook subscription and have exposed a flow as a webhook using Service Integration in Decisions. Microsoft sends a POST request to my webhook for subscription validation, including a validationToken as a URL query parameter (not in the headers or body). I can’t access this validationToken in the flow’s input or request headers. How can I capture the validationToken from the request URL so I can return it in the response as required by Microsoft Graph?

MalikB_Decisions

Hello,

You can use the "Post to Flow Handler" behavior when exposing your flow as a webhook. This handler allows you to access the raw URL or query string parameters from POST requests, including the validationToken.

Please refer to our Post to Flow Handler Behavior documentation page.