Authority

Authority is the equivalent of a village's health points. A newly founded village starts with 125k authority, with an initial maximum limit of 250k authority and a drain of 5k authority per in-game day.

Drain
Authority is automatically drained from a village every in-game day, based on village claim structures that village has built. This authority loss occurs gradually over the day. (with just a village idol, the authority drain is around 200 every 20 real-time minutes - a total of 5k authority per in-game day)

If a village's authority falls below 50k, the village claim will lose its effectiveness. That is, anyone will be able to freely interact with objects inside the village claim (including stealing) without leaving any scents. The village idol can also be destroyed by outsiders when the authority is under this threshold.

Gain
A village gains authority whenever any of its villagers earn learning points. How much authority is gained per learning point earned is based on a villager's charisma and intelligence: The base LP gain, multiplied by the geometric value of your Intelligence and Charisma divided by thirty. AuthGain = LP_Gain * (sqrt( (Int*Cha/10) ) /3).

How much authority a village can store (the maximum authority limit) may be increased by building the following structures. Note that these structures also increase the daily authority drain as a side effect.
 * Banner - Adds 13k maximum authority and drains 250 authority per in-game day.
 * Statue - Adds 20k maximum authority and drains 350 authority per in-game day.

Using Authority
The following actions require authority points to use:
 * Revoke personal claim - Lawspeakers may revoke personal claims inside the village claim, at a cost of about 250 authority per square of the personal claim.
 * Summon hirdsman - Chieftains may summon a village's appointed hirdsmen at a cost of 50k authority. (needs confirmation)
 * Leaving a village - A village will lose 25k authority every time a villager is exiled or gives up membership in that village.
 * Dissolve the Hird - Removes the hird members from their positions for 75k authority. (needs confirmation)