Makes the AI say yes to every offer
yesman
The AI accepts every diplomatic offer. Alliances, royal marriages and peace take a single click, and typing the command again returns things to normal.
These commands turn the diplomacy table completely in your favor. The AI agreement command makes the AI accept all your offers, from alliances to royal marriages. The annex and integrate commands add a country to your territory without a war, and the difference lies in cores: Annexing does not add cores, integrating does. The vassal command binds a country to you with a single line.
Most codes here need cheats turned on first. See the section on how to open the console.
cash
Pick what you want to do and the target country, and the command is ready.
{action} {country}
Annexing does not add cores to the provinces, integrating does.
yesman
The AI accepts every diplomatic offer. Alliances, royal marriages and peace take a single click, and typing the command again returns things to normal.
annex BYZ
Adds the country of the tag at the end to your territory without a war, and BYZ in the example is Byzantium. According to the Paradox wiki, this command does not add cores.
integrate BYZ
Adds the country of the tag at the end to your territory and, unlike annexing, adds cores to the provinces.
vassalize BYZ
The country of the tag at the end becomes your vassal without a war. If you add a second tag at the end, you make that country the vassal of another country.
add_opinion BYZ TUR
The opinion of the first country you type toward the second one improves. In the example, Byzantium's opinion of the Ottomans goes up.