Guild Wars 2

You need to take the Defend Event (ill try and find out the id) into account. If it failed, the temple will be contested.
The previous events will still be on Success until the chain restarts.

Edit: I have yet to see the event so this is just an educated guess but i would try this event:

589B1C41-DD96-4AEE-8A3A-4CC607805B05
Help the Pact hold the Altar of Betrayal from the Risen.

I think you got the wrong impression here.
This isnt an API like the LUA interfaces in WoW or LotRo.
You arent supposed to make addons to the game itself.
The GW2 Api is supposed to make ingame information avaiable from the outside, through websites or applications.
Also the info is extra restricted right now, because they are still working on implementing authentification, so they can only give general info out.
Give it time, they only released the APIs about 2 weeks ago

edit: ninjaed what ruhr said

I doubt they will introduce this, because it would go against their rule to give something thorugh the API that isnt apparent in-game. They made the nodes random for a reason, which the API would defeat. Also you would make farming easy again for bots.

Happened today in Southsun Cove, but it was not the first time, happened also in Melchor’s Leap once. I went through the zone, marked the nodes on a map for my guild.
Then some hours later, after they had problems finding them, i went back and the nodes were in completely different positions. There was no new build in the meantime, i did not get a notice about being in Overflow (also whats the chance we need one in Southsun) and there were also other people collecting the nodes so i havent imagined it.
Are we now getting node refreshs also outside of new builds or what is happening?

Also server is Whiteside Ridge.