How to unblock cardyb on our server

[raphaelcockx]

First of all, I know quite a few issues have been written about link cards not working. However, I believe in this case the solution does lie on our end if we could just get the right info.

In short: link preview fetching fails because the Akamai configuration for our site is set up to block most bots and crawlers (returning a 403) except for those we whitelisted. As such, if we can create a pattern that matches the cardyb crawler, this would fix the problem. This is an example of a link that fails.

Is there any info on the referrer, user agent and/or ip range being used so we can add a rule?

[matteason]

I've just tested this - the user agent for Cardy B is (currently) Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Bluesky Cardyb/1.1; +mailto:support@bsky.app) Chrome/W.X.Y.Z Safari/537.36. So it looks like the solution is to allow UAs containing Bluesky Cardyb through (personally I wouldn't add the version number since we don't know how often that's likely to change)

Tested by pointing Cardy B at a https://webhook.site URL

[jessicalc]

I've just tested this - the user agent for Cardy B is (currently) Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Bluesky Cardyb/1.1; +mailto:support@bsky.app) Chrome/W.X.Y.Z Safari/537.36. So it looks like the solution is to allow UAs containing Bluesky Cardyb through (personally I wouldn't add the version number since we don't know how often that's likely to change)

Tested by pointing Cardy B at a https://webhook.site URL

@matteason Thanks for the webhook.site tip to derive the user agent! Super helpful.