How much weaponry does a starbase carry to defend itself in Star Trek?

Starbase Yorktown had an veritable cloud of satellites armed with phasers as well as turrets aplenty on its exterior that could fire torpedoes and phasers. Based on its size (and what little we see of the distribution of weapons) we can presume that it had hundreds, if not thousands of phaser arrays at its disposal, more than enough to fend of even a fleet of well-armed vessels.

While it's hard to generalise from a single example, it's probably safe to say that the Federation place a premium on protecting large civilian populations. A large starbase or stardock would presumably be very well armed.

There is almost zero canon evidence of weapons on starbases and smaller bases.

The closest we get to see starbase armaments are the board games and PC games, such as Starfleet Command series which is based on Star fleet Battles the boardgame, and Star Trek: Armada series. And we can't rely on those as they are balanced for the game, except DS9, and that station is abnormal to the extreme.

I don't have my SFB Starbase SSD handy. But bases, due to their fixed location, and inability to rotate (unless they are already rotating), are equipped with some VERY heavy weapons.

For example: a "tournament base" in SFB, which is designed to balance with the tournament cruisers in competitions, has no less than 7 Phaser-4's, some point-defense phasers and shields 50% stronger than that of equivalent cruisers. And base station is the smallest "station" in SFB (battlestation and starbase are much bigger)

http://starfleetgames.com/federation/Commanders%20Circle/documents/ship%20cards/General/SFB%20Tournament%20Base%20Station%20tbs%20v2.jpg

DS9 was a Cardassian mining outpost initially and had some basic armaments (which the Cardassians stripped prior to them being driven off by the Bajorans).

It wasn't until few years later that Starfleet outfitted DS9 with massive weapons (5000 photon torpedoes and powerful deployable phaser banks) and it got turned into a proper starbase capable of destroying over 50 Dominion/Cardassian ships all on its own.

If SF was able to do that to a 'simple' mining outpost, then it stands to reason that ALL of its outposts and starbases would have defensive and offensive systems of some kind.

Outposts would likely have relatively minimal defenses, but it really depends on SF's approach, where those outposts are located, etc. Given SF's ships and stations are highly modular, they could relatively easily turn even simple outposts into battle installations.

The Mushroom type Starbase (Spacedock) in all probability DOES have a plethora of weapons installed (I would imagine even more so than DS9), even though we don't have canonical evidence it has any (but it would seem VERY strange if it didn't).

We already know that Yorktown has heavy defenses (though I didn't like how it had separate/vulnerable satellites - then again, Krall did hack into Federation communications and probably managed to bypass the shields - that's why they weren't particularly useful - but you'd think that those weapons platforms would be heavily shielded and have thick hulls).