Sorry for the long delay, but are you still able to reproduce this issue? I've checked again on my end, and manually verified that the first 5 posts in the API call you specified are identical to the first 5 posts on
.
To answer your other question, the Tumblr Firehose is our real-time streaming service which allows you to receive
all posts created on Tumblr. However, it is not free like the Tumblr API. I unfortunately do not have much information about its sale, though if you fill out the form and ask at
https://www.tumblr.com/support, they should be able to direct you to the right place.