The Mesaversal APIs are systems set in place by the Illuminati to allow for communication between different mesaverses within a xeroverse. Ordinarily, they are locked off to the civilisations within a mesaverse, but proper usage of mesaversal buffer overflows can allow information to be injected into the APIs.
Physically, a mesaversal APIs resembles a multiverse-scale structure, with various connections linking to neighboring mesaverses.
The types of channels present in a mesaversal API vary; some unlucky mesaverses have none, and some important mesaverses (known as core mesaverses) have almost every kind of known channel connecting with almost every other mesaverse in the xeroverse.
Typical types of channels that are widely found include:
- Creation channels: Allows for the creation of new multiverses built to desired specifications in the targeted mesaverse.
- Surveillance channels: Allows for remote viewing of events in any multiverse in the targeted mesaverse, presented as a high-dimensional holographic image in the mesaversal API.
- Modification channels: Allow for the creation of matter in targeted multiverses. Often, the first thing a newly-xeroversal civilisation does is create a mesaversal buffer overflow engine in a neighboring mesaverse using a modification channel, and then uses that to access the mesaversal APIs in the other mesaverse.
- Destruction channels: Allows for the destruction of multiverses in the targeted mesaverse.
Often, the use of these mesaversal APIs is inherently restricted - it is often a major undertaking to find a core mesaverse with an appropriate API for increasing the permissions of the APIs of the other mesaverses in the civilisation.