Idempotency-Key
Provide this header with any arbitrary string to prevent duplicate submissions of the same status. Consider using a hash or UUID generated client-side. Idempotency keys are stored for up to 1 hour.
Some web client will always send it regardless of server software, so I think it's reasonable to at least accept it even not implement it yet.
It's used by Mastodon and Pleroma
Some web client will always send it regardless of server software, so I think it's reasonable to at least accept it even not implement it yet.