diff --git a/Tholus.Console/ModBags.cs b/Tholus.Console/ModBags.cs
new file mode 100644
index 0000000..3da6166
--- /dev/null
+++ b/Tholus.Console/ModBags.cs
@@ -0,0 +1,36 @@
+using Cocona;
+
+namespace Tholus.Console;
+
+public class ModBags {
+
+    [Command("add", Description = "Add a mod to a bag")]
+    public void Add(ModBagParameters bag, ModSourceParameters mod) {
+        System.Console.WriteLine($"TODO: Add new mod to bag: '{bag}' '{mod}'");
+    }
+
+    [Command("remove", Description = "Remove a mod from a bag")]
+    public void Remove(ModBagParameters bag, ModParameters mod) {
+        System.Console.WriteLine($"TODO: Remove mod from bag: '{bag}' '{mod}'");
+    }
+
+    [Command("list", Description = "List the mods contained in a bag")]
+    public void List(ModBagParameters bag) {
+        System.Console.WriteLine($"TODO: List mods of bag: '{bag}'");
+    }
+
+    [Command("apply", Description = "Apply a mod bag to an installation")]
+    public void Apply(ModBagParameters bag, InstallParameters install) {
+        System.Console.WriteLine($"TODO: Apply bag: '{bag}' '{install}'");
+    }
+
+    [Command("create", Description = "Create a new empty mod bag")]
+    public void Create(ModBagParameters bag) {
+        System.Console.WriteLine($"TODO: Create bag: '{bag}'");
+    }
+
+    [Command("destroy", Description = "Destroy an existing mod bag")]
+    public void Destroy(ModBagParameters bag) {
+        System.Console.WriteLine($"TODO: Destroy bag: '{bag}'");
+    }
+}
diff --git a/Tholus.Console/Mods.cs b/Tholus.Console/Mods.cs
new file mode 100644
index 0000000..fec78d4
--- /dev/null
+++ b/Tholus.Console/Mods.cs
@@ -0,0 +1,46 @@
+using Cocona;
+
+namespace Tholus.Console;
+
+public class Mods {
+
+    [Command("add", Description = "Add a mod to an installation")]
+    public void Add(ModSourceParameters mod, InstallParameters install) {
+        System.Console.WriteLine($"TODO: Add new mod: '{install}' '{mod}'");
+    }
+
+    [Command("remove", Description = "Remove a mod from an installation")]
+    public void Remove(ModParameters mod, InstallParameters install) {
+        System.Console.WriteLine($"TODO: Remove mod: '{install}' '{mod}'");
+    }
+
+    [Command("list", Description = "List all mods enabled for an installation")]
+    public void List(InstallParameters install) {
+        System.Console.WriteLine($"TODO: List mods: '{install}'");
+    }
+
+    [Command("enable", Description = "Enable a mod for an installation")]
+    public void Enable(ModParameters mod, InstallParameters install) {
+        System.Console.WriteLine($"TODO: Enable mod: '{install}' '{mod}'");
+    }
+
+    [Command("disable", Description = "Disable a mod for an installation")]
+    public void Disable(ModParameters mod, InstallParameters install) {
+        System.Console.WriteLine($"TODO: Disable mod: '{install}' '{mod}'");
+    }
+
+    [Command("create", Description = "Create a new mod from a template")]
+    public void Create(ModParameters mod, [Argument(Description = "Template for the mod")] string template, InstallParameters install) {
+        System.Console.WriteLine($"TODO: Create mod: '{install}' '{template}' '{mod}'");
+    }
+
+    [Command("build", Description = "Build a mod's source code")]
+    public void Build(ModParameters mod, InstallParameters install) {
+        System.Console.WriteLine($"TODO: Build mod: '{install}' '{mod}'");
+    }
+
+    [Command("purge", Description = "Remove outdated or unused dependency mods for an installation")]
+    public void Purge(InstallParameters install, bool outdated, bool implicitlyInstalled) {
+        System.Console.WriteLine($"TODO: Purge mods: '{install}' Outdated: '{outdated}' ImplicityInstalled: {implicitlyInstalled}");
+    }
+}
diff --git a/Tholus.Console/Program.cs b/Tholus.Console/Program.cs
index 27f5b8f..e8d77d3 100644
--- a/Tholus.Console/Program.cs
+++ b/Tholus.Console/Program.cs
@@ -1,14 +1,71 @@
 using Cocona;
+using Tholus.Console;
 
-internal class Program
+public record InstallParameters(
+    [Argument("install", Description = "Name of the target installation")]
+    string? Name
+) : ICommandParameterSet;
+
+public record ModBagParameters(
+    [Argument("bag", Description = "Name of the target mod bag")]
+    string Name
+) : ICommandParameterSet;
+
+public record ModParameters(
+    [Argument("name", Description = "Name of the mod")]
+    string Name
+) : ICommandParameterSet;
+
+public record ModSourceParameters(
+    [Argument("source", Description = "Source of the mod to be installed")]
+    string Source
+) : ICommandParameterSet;
+
+[HasSubCommands(typeof(Mods), Description = "Manage individual mods of installations")]
+[HasSubCommands(typeof(ModBags), Description = "Manage collections of mods which can be applied to installations")]
+public class Program
 {
     public static void Main(string[] args)
     {
-        CoconaApp.Run<Program>(args);
+        CoconaApp.Run<Program>(args, options =>
+        {
+            options.TreatPublicMethodsAsCommands = false;
+        });
+    }
+
+    [Command("add", Description = "Add an existing installation to the list Tholus knows about")]
+    public static void Add(string name, string path)
+    {
+        System.Console.WriteLine($"TODO: Add new install: '{name}' '{path}'");
+    }
+
+    [Command("remove", Description = "Remove an installation from the list Tholus knows about")]
+    public static void Remove(string name)
+    {
+        System.Console.WriteLine($"TODO: Remove install: '{name}'");
+    }
+
+    [Command("list", Description = "List all known installations")]
+    public static void List()
+    {
+        System.Console.WriteLine($"TODO: List installs");
+    }
+
+    [Command("install", Description = "Install Everest to an installation")]
+    public static void InstallEverest(string name, string everestVersion)
+    {
+        System.Console.WriteLine($"TODO: Install Everest: '{name}' '{everestVersion}'");
+    }
+
+    [Command("uninstall", Description = "Uninstall Everest from an installation")]
+    public static void UninstallEverest(string name)
+    {
+        System.Console.WriteLine($"TODO: Uninstall Everest: '{name}'");
     }
 
-    public void Run()
+    [Command("launch", Description = "Launch an installation")]
+    public static void Launch(string name, bool vanilla)
     {
-        Console.WriteLine("Not yet implemented.");
+        System.Console.WriteLine($"TODO: Launch install: '{name}' Vanilla: {vanilla}");
     }
 }