I'm trying to post a webhook on Autodesk which callbackurl is an Appian web API. The problem I have, I can't expose any Appian service without authentication, and on the post method I don't see any option where I can write an API-key or something similar, only the callbackurl.
Is there any method where I can expose an Appian Web Api?
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You could try to use basic authentication like in the curl examples:
https://docs.appian.com/suite/help/23.4/Web_API_Authentication.html#api-key-authentication