Facebook messenger chatbot authentication

Question

How do you authenticate the chatbot backend per fb app? I have a chatbot id like to use with multiple applications, but id need to know what app is sending me a message. The only way I found so far is to include a unique (per app) token into the webhook url as a parameter. I am not sure if this is good/valid option or not?

I could not find any documentation about the topic either.

You will get page id on each webhook event. You could use that to identify different apps. — Azizul Hakim, Dec 07 '19 at 05:09
Thanks for answer @AzizulHakim, is it coming as part of header or how to I find it? — ArkadyB, Dec 07 '19 at 05:10
Ahhh url u mean.. The page ID can change I guess and I loose the identity. — ArkadyB, Dec 07 '19 at 05:11

score 0 · Accepted Answer · answered Mar 08 '20 at 13:30

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Assuming you refer to "multiple pages" and not "multiple apps" (at least that what your comments seem to refer to), each webhook event will include the actual page ID your app is connected to:

{"object":"page","entry":[{"id":"<this-is-the-page-id>","time":<timestamp>,"messaging": ...

answered Mar 08 '20 at 13:30

lars.schwarz

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Yup, found that already. Ignored that value for the first attempt. – ArkadyB Mar 09 '20 at 01:01

Facebook messenger chatbot authentication

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