CattyNebulart, You 'blue haired female combat andriods' contract would require you to put out enough chakra to summon the bosses of the cannon ones as a starting level summons. The Summon Grand fleet one would require you to sacrifice all the buji to get even a pair of minor ships.
The only way in cannon or anything even trying to be close to it, to get anywhere near that level of chakra you'd have to use Sasuke's absorb nuclear level (10 km blast radius) explosion and convert it directly in chakra and get a free time stop to use the chakra without being vaporized ability. Even then it required the author to almost kill him and give him the RPG charicter uber ability to heal any injury in one night while resting in an inn. So yeah even with absorb nuclear equivalent explosion ability you'd need to carry nukes with you to power the summons it makes the contract useless.
The only way in cannon or anything even trying to be close to it, to get anywhere near that level of chakra you'd have to use Sasuke's absorb nuclear level (10 km blast radius) explosion and convert it directly in chakra and get a free time stop to use the chakra without being vaporized ability. Even then it required the author to almost kill him and give him the RPG charicter uber ability to heal any injury in one night while resting in an inn. So yeah even with absorb nuclear equivalent explosion ability you'd need to carry nukes with you to power the summons it makes the contract useless.