Hi,
As many of you have noted the API began returning errors over the weekend. The failure was brought to our attention yesterday, and we got out a fix today that should have solved it. While the API is no longer officially supported, it should continue to work and we're sorry for any disruption this caused.
This version of the API will continue to exist for now, but is not supported and will eventually be fully deprecated. Depending on your use-case, you may be better served going forward using our embeddable petition widget. This will allow you to display a petition info card, along with an up to date signature count, on your web page. If you have other use-cases, like a fully embedded sign experience, please let us know so that we can correctly prioritize those types of widgets.
Thank you,
Mark Dimas
CTO - Change.org