EU4 Modding Skill

Reference documentation for Europa Universalis IV modding, converted from the Paradox Wiki to Markdown for use with AI coding agents and offline reference.

39 topics are covered, from events and missions to governments, religions, and units.

Repository Layout

docs/                   # Markdown documentation (one file per topic)
SKILL.md                # Agent skill descriptor — start here if using an AI agent

Using with an AI Agent

Point your agent at SKILL.md. It describes what the skill does, when to use it, and indexes every doc file with a one-line description. The agent reads whichever docs/*.md files are relevant to the user's question.

Works with any coding agent that can read files: Claude Code, Cursor, Kimi, GPT, etc.

Documentation Topics

File	Topic
Advisor_modding.md	Advisor types
Age_modding.md	Ages and age abilities
Building_modding.md	Buildings
Casus_belli_modding.md	Casus belli types
Colonial_regions_modding.md	Colonial regions
Country_creation.md	Creating countries
Culture_modding.md	Culture groups
Decision_modding.md	Decisions
Defines.md	Global game constants
Diplomatic_action_modding.md	Diplomatic actions
Disaster_modding.md	Disasters
Empire_of_China_modding.md	Empire of China mechanics
Estate_modding.md	Estates
Event_modding.md	Events
Faction_modding.md	Factions
Government_modding.md	Governments and reforms
Government_mechanic_modding.md	Government mechanics
Great_project_modding.md	Great projects
History_modding.md	History files
Holy_Roman_Empire_modding.md	Holy Roman Empire
Idea_group_modding.md	Idea groups
Institutions_modding.md	Institutions
Mercenaries_modding.md	Mercenaries
Mission_modding.md	Mission trees
Modifier_modding.md	Modifiers
On_Actions.md	On Actions / event hooks
Parliament_modding.md	Parliament
Peace_treaty_modding.md	Peace treaties
Policy_modding.md	Policies
Rebel_modding.md	Rebel types
Religion_modding.md	Religions
Ruler_Personality_modding.md	Ruler personalities
Scenario_modding.md	Scenarios / bookmarks
Scripted_function_modding.md	Scripted functions
Subject_type_modding.md	Subject types
Technology_modding.md	Technology
Trade_company_modding.md	Trade companies
Trade_goods_modding.md	Trade goods
Unit_modding.md	Units

License

Documentation content is sourced from the Paradox Wiki under CC BY-SA 3.0.