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Webhook Validation Problem



I need to create a hook for actions of a Trello card.

I receive this from Trello API:


{"message":"URL ( not reachable. Error: tunneling socket could not be established, statusCode=503","error":"ERROR"}


I got custom tests on this URL and it respond 200 for HEAD requests.

1 answer

0 votes
Vishaal S Atlassian Team Feb 21, 2022

Hello Hesam,

You can find information about setting up webhooks to use with our API here:

In general, if you have questions about using our API, I'd recommend asking these in our developer forum here: This is where our API experts and Trello developers are based to help you with questions as they come up.

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