Do map sharing agreements show AI where my special locations are?

[Hebrux]

I don't want them discovering my ship graveyards.

[Nightskies]

Three different tiers, IIRC.

Territory map: Reveals what is at your colonies. Might include what's in the same system.
Galaxy map: Reveals all information you've gathered so far.
Operations map: Actively reveals everything you uncover and have already uncovered.

I would generally advise caution when regarding any agreement beyond NAPs and trade, but especially so for maps and migration.

[Dray Prescot]

I don't take that chance, i.e. providing any form of mapping information to other Empires or Pirate Factions.

I will buy from them but never sell to them.

My experience with Pirate Factions offering to sell me info on Ruins and the like is to not bother. All (or at least almost all) of the information is unuseable by me, such as Ruins inside the Home Systems of other Empires, or their Colonies.

I also refuse Migration agreements since they normally lead to me losing Population to their Colonized Worlds.

I also do not sign Mining rights agreements, since it usually means that they want to build on Mining Sites inside your claimed territory. Let them buy those Resources from my Mining Stations instead.

[ZumZoom]

Originally posted by Dray Prescot:

I also do not sign Mining rights agreements, since it usually means that they want to build on Mining Sites inside your claimed territory. Let them buy those Resources from my Mining Stations instead.

You can game mining agreements - wait a while for them to build stuff in your territory, then cancel the agreement and buy out those stations, rinse and repeat. Useful when your warp drives are not very fast yet, to cover more locations.

[Hebrux]

This is what I thought but I wasn't sure, thanks for the answers everyone!

[TheMac]

Originally posted by Hebrux:

This is what I thought but I wasn't sure, thanks for the answers everyone!

I had the same question during my last game. Thanks. :)

[russlog6]

Originally posted by Dray Prescot:

I also do not sign Mining rights agreements, since it usually means that they want to build on Mining Sites inside your claimed territory. Let them buy those Resources from my Mining Stations instead.

The game is more nuanced than that. As with most of the agreement categories, there is a time and place. On harder levels of the game, it is to your advantage to have as many Defense Treaties as possible late game so that you are able to leverage War declarations. So you need the subordinate treaties to get there. I believe it is now easier to get Defense Treaties, as it was previously next to impossible (in higher levels of the game). Now most factions end game have many DTs and trying to navigate through the maze of who to conquer, who to intimidate etc, who to prepare your fleets for, has added complexity and challenge to the late game.

As to the nuances, eg with respect to Mining and Exploration Rights Agreements, if you have spammed the mining sites in your own and unclaimed territories (which you should) then other factions will have less to no opportunities, whereas you can create new work for your idle explorers and constructors in the relatively unmined territories of other factions.

Also you can tie up more vital resources such as Hexadorium and Caslon across the map - Denial of Access strategy. As a matter of course I prioritise all Hex and Caslon discoveries regardless of quality, for mining, both to feed future requirements and deny them to other factions.

[Nightskies]

And for more extra info...

A hidden advantage to Mining Rights is that it allows you to build any stations in their territory without diplomatic malus, not just mining stations. The big one being Research Bases, though they'll probably already have them. There are ways around that without cheating.

One of my favorites is to make a Monitoring Station to be a fuel depot with mining engines and cargo- you can build one at a location that already has a mining station. Freighters won't normally take the resources from them, so other empires won't fill up or buy from it, making it a dependable fuel point. It's probably a good spot for a long range sensor too, if you don't have their operations map. Its a lot safer in friendly territory than in neutral space.

You can also capture other empire's bases in their territory with just a couple raiders, luring forces to defend assets and assault their former station, potentially causing an armed conflict without war between your friendly empire and the target empire. Which could escalate to war, of course.

Not saying its generally worth it, though. It should be taken with consideration.