The provided URL has not returned the requested challenge

[kyle_vella_user]

I am attempting to trigger a webhook within my workflow based on a Monday.com automation. When I insert the webhook provided by my workflow into Monday, I receive the message "The provided URL has not returned the requested challenge." Is this because I need to specify the API key from Retool to authenticate requests? I'm not sure if Monday supports this, but I would love to know if this is possible.

[MiguelOrtiz]

Hi @kyle_vella_user,

So you need to program your workflow to return the requested challenge. You can find information here

I actually tried to do this myself but was not able to do it, as I was trying to get a sample of what the webhook is sending as data:

However I click Connect and I don't get any logs in the History....

[kyle_vella_user]

@MiguelOrtiz Thank you - This is helpful. I also tried to log the trigger but not seeing the workflow run. I will let you know if I make any progress.

[kyle_vella_user]

@Tess Is there anyone on the Retool Team that could provide some guidance on setting up these webhooks?

[Tess]

Hi @kyle_vella_user

The docs for this are a bit hidden, but if you hover over "Api key" in Retool's webhook triggers, it shows that you can add the api key to the url as a query param

Please note the warning described in the product documentation:

I've confirmed that adding the webhook url as https://api.retool.com/v1/workflows/workflow-id-here/startTrigger?workflowApiKey=api-key-here with Monday

[kyle_vella_user]

@Tess Thank you so much for the help. Following the format you described: https://api.retool.com/v1/workflows/workflow-id-here/startTrigger?workflowApiKey=api-key-here, I am still receiving the same message for some reason. Is there anything else I can try?

[Tess]

Is the url working if you call it in Postman or a Retool rest api query?

[kyle_vella_user]

Yes it is - I am returning the following 200 response: { "challenge": "{{startTrigger.data.challenge}}" }

Should I be using a webhook return here? I submitted an issue w/Monday given the url seems to be working.

[kyle_vella_user]

This url syntax worked: https://api.retool.com/v1/workflows/workflow-id-here/startTrigger?workflowApiKey=api-key-here

with this syntax in the response body:

{
  challenge: startTrigger.data.challenge
}

[Tess]

Oh good!