So many people need help. So many people don't get that help because nobody gets the chance to hear about it. There used to be a little village right outside of Belgrath. Know why nobody has heard of it? Because it was overrun with bandits years ago and it's not there anymore.

The Adventurers Guild is the place where jobs are requested and handed out for considerable bounties. It's at these various offices in every major city or village where people can go and post their problems up for a reward so that a specialist could come and take care of it. A village has a vampire problem? the villagers can request aid from The Adventurers Guild to contact a hunter who can deal with it.

Each office has a head boss who owns the establishment and handles the larger duties of the office.
Then there is the manager positions who are in charge of sorting out rewards and funds as needed per each contract and adventurer.
Lastly there is the clerks who are in charge of posting available jobs, accepting contracts, and handle sorting through and grading job requests into classifiable areas to determine who is the best adventurer for the job.

The client would come in to the Guild House and post a job for a minimum reward (Determined by the individual office). There are usually adventurers on hand waiting for a job, unless the job is deemed too dangerous for weaker adventurers the job will then be posted and seen by an adventurer capable of the job. Once the job is done the adventurer would return with proof of completion and collect the reward.

Adventurers affiliated with the guild are generally assessed and ranked by rate and quality of success. Perhaps given a beginning contract to see what level they are at and what dangers they are capable of facing. The clerks make sure that lower ranked guild members are not given contracts that they have no chance of completing, and the higher ranked members are given contracts worthy of said rank.

The ranks of guild adventurers are signified by metallic plates, gifted to the adventurer once the respective rank is reached which makes them eligible for contracts for that rank. Upon joining the adventurers guild the new member begins at a copper plate, but if his skills are sufficient he can rise high and fast through the ranks with little trouble.

(OOC. Creating advanced guild members is allowed of course. That's what I did ) - Isaias Kildare - Mithril Rank Adventurer.

Ranked from lowest to highest
Copper:
Iron:
Steel:
Silver:
Gold:
Rhodium:
Platinum:
Mithril:
Adamantite:

Contracts for each class of adventurer are competency based.
Copper to Steel ranked members would be eligible to handle smaller contracts such as extermination hunting, bodyguarding, search and rescue, aiding an endangered village, or escorting services.
Silver to Rhodium ranked members would be eligible to handle slightly more difficult contracts such as Monster hunting, Bounty hunting, Valuable items acquisition, or dungeon delving.
Platinum to Adamantite ranked members would be eligible for more heroic contracts such as dragon hunting, villain stomping, or a high risk special mission.
Naturally all of these jobs have different difficulty ratings based on the circumstance. The guild will do its best to investigate to see how difficult a certain contract is to make sure they don't send any member on a suicide mission.
So if a Dragon hunt is marked available to the Copper rank, then the adventurer can be assured that while the contract has its natural risk, it's deemed to be easy enough to not warrant the attention of a higher rank.
But if an animal extermination is marked for an Adamantite rank, Then the adventurer can be assured that the animals in question are far more dangerous than a beginning adventurer can handle.

In some cases when a contract is marked for more advanced adventurers, lower ranking adventures can still accept the contract if they form a party. This is usually measured by the monetary value of the guild badge.
For example: A contract is marked for a Silver class adventurer. A team of ten Copper class adventurers may be qualified to take up the contract.

The Adventurers Guild was started to help people. Plain and simple. So many times when a village was in danger the local regent was unable or unwilling to help, so the village would suffer or be destroyed.

The guild was founded to do away with that. Now there is a second option. If knights fail or are unavailable, perhaps the danger could still be dealt with by a band of men or women willing to put their lives on the line for coin.
Where corruption can drive knights and nobles to selfishness and corrupt deeds, the common man could still rely on the simple desire for coin to be what judges an adventurers actions.

The Adventurers Guild is not new, but that's not to say it shouldn't have been around sooner. Whenever a village is suffering from black magic or under attack by monsters, they know that they can ask the Adventurers Guild for aid.

Even private clients often go to the Adventurers Guild to hire Adventurers or Mercenaries for dangerous jobs, be it bodyguard duty or collecting herbs in a dangerous forest. For nearly any life threatening or risky situation the Adventurers Guild can help.

On the flip side. For the Adventurers. Some of the lands greatest heroes have found their renown first in the guild working for coin and getting their name spread across the land as their legend grows. The guild offices are also hubs for much gossip as information travels regularly through the billboards. The adventurers who become renown in certain areas can be recommended to assist in other regions as their name gets thrown around. Before you know it, you could be a wandering hero like in the stories of old!