Repmundo was a swampy planet. When the auctors, the race who live on the planet became techonologicly advanced they began to extract all resources from it. Now it is practically an artificial structure with large towering structures reaching into the upper atmosphere. It is around 0.9 AU distance from its sun. The Seas are gone, But Water is artificially extracted and purified from the air. Auctors Are augmented sufficiently to need very little water every day, and can go up to a month without it.
It is primarily inhabited by slave races, most breathe different types of air. To solve they use air exchanges to create suitable gasses for the creatures in the workplaces.
Only the most important auctors live here, the few who do deal with politcal problems.