Validating Server to Server Endpoint URL

API and Webhooks
1

Format Your New Topic as Follows:

API Endpoint(s) and/or Zoom API Event(s)
Link the API endpoint(s) and/orZoom API Event(s) you’re working with to help give context.

Endpoint URL Validation

Description
Details on your question, workflow or the problem you’re trying to solve.
I’m trying to validate a Power Automate Endpoint URL. However it will not validate. I’ve used a webhooksite tester URL and that validates fine, however the power automate URL will not validate.
From other topics I’ve found that you must set a custom Auth header & must set up a response for the CRC However even after setting these up Validation is still failing.

Error?
The full error message or issue you are running into, where applicable.

When selecting Validate I get the following Error:
URL validation failed. Try again later.

How To Reproduce
Steps to reproduce the behavior:
1. Request URL / Headers (without credentials or sensitive info like emails, uuid, etc.) / Body
Validate Request sent to Power Automate:
{
“payload”: {
“plainToken”: “CaA4i4GMT6qugjVidrb6HQ”
},
“event_ts”: 1748362518271,
“event”: “endpoint.url_validation”
}
Response Sent to Zoom:
{
“statusCode”: “200”,
“headers”: {
“Content-Type”: “application/json”
},
“body”: {
“plainToken”: “CaA4i4GMT6qugjVidrb6HQ”,
“encryptedToken”: “a0d33113947ed01b99050e11585ca4ffd1f28151dfcad979be36b60da8d753b9”
}
}
2. Authentication method or app type
3. Any errors

Any help, or an example response i can reverse enginnerr would be appreciated

2

Hey @Jon1989
Thanks for reaching out to us!
Have you had a chance to review our sample app?

3

Hi Elisa,
Thanks for the response. I’ve managed to resolve the issue.
The issue was with my hash function not outputting the correct value as it was using the secret key as a string instead of the byte value.

Thanks again,

Jon

4

Thank you so much for sharing your findings with the Community! @Jon1989