https://docs.joinmastodon.org/methods/timelines/#tag notes that a 404 response is possible if the hashtag "does not exist" (https://docs.joinmastodon.org/methods/timelines/#404-not-found).
Some quick checking on mastodon.social suggests this is incorrect, and an empty array is returned instead (which also feels like the correct behaviour).
https://mastodon.social/api/v1/timelines/tag/pO8WHFw3JSGvLAt0iyQ08g (tag generated with head -c 16 /dev/urandom | base64 | tr -dc 'a-zA-Z0-9', so it's extremely unlikely to exist) returns a 200, with a JSON body, consisting of [].
https://docs.joinmastodon.org/methods/timelines/#tag notes that a 404 response is possible if the hashtag "does not exist" (https://docs.joinmastodon.org/methods/timelines/#404-not-found).
Some quick checking on mastodon.social suggests this is incorrect, and an empty array is returned instead (which also feels like the correct behaviour).
https://mastodon.social/api/v1/timelines/tag/pO8WHFw3JSGvLAt0iyQ08g (tag generated with
head -c 16 /dev/urandom | base64 | tr -dc 'a-zA-Z0-9', so it's extremely unlikely to exist) returns a 200, with a JSON body, consisting of[].