.

src/main/java/de/kencommand/api/KenCommandApi.java

@@ -1,17 +1,14 @@
 package de.kencommand.api;
 
-import de.kencommand.api.processing.CommandExecutor;
-import de.kencommand.api.processing.ParsedArgument;
+import de.kencommand.api.structure.argument.ArgumentType;
+import de.kencommand.api.structure.argument.CommandArgument;
 import de.kencommand.api.structure.node.CommandNode;
 
-import java.util.Iterator;
-import java.util.Map;
-
 public interface KenCommandApi<T> {
 
+    CommandNode<T> createNode(String... name);
+
+    <V> CommandArgument<T, V> createArgument(String id, ArgumentType<V> type);
+
     void invoke(CommandNode<T> node, T sender, String[] args);
-
-    CommandExecutor<T> processLiterals(CommandNode<T> node, Iterator<String> argsIterator);
-
-    Map<String, ParsedArgument<T, ?>> parseArguments(CommandNode<T> node, Iterator<String> argsIterator);
 }

src/main/java/de/kencommand/api/structure/argument/CommandArgument.java

@@ -1,6 +1,5 @@
 package de.kencommand.api.structure.argument;
 
-import de.kencommand.api.processing.CommandContext;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 

src/main/java/de/kencommand/api/structure/argument/suggestion/NoSuggestionProvider.java

@@ -0,0 +1,25 @@
+package de.kencommand.api.structure.argument.suggestion;
+
+import de.kencommand.api.processing.CommandContext;
+import de.kencommand.api.structure.argument.SuggestionProvider;
+import lombok.AccessLevel;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+import java.util.Set;
+
+@NoArgsConstructor(access = AccessLevel.NONE)
+public class NoSuggestionProvider implements SuggestionProvider<Object> {
+
+    @Getter(value = AccessLevel.PRIVATE, lazy = true)
+    private static final SuggestionProvider<Object> instance = new NoSuggestionProvider();
+
+    public static SuggestionProvider<Object> create() {
+        return getInstance();
+    }
+
+    @Override
+    public Set<String> suggest(CommandContext<Object> context) {
+        return Set.of();
+    }
+}

src/main/java/de/kencommand/api/structure/argument/types/IntegerArgumentType.java

@@ -0,0 +1,25 @@
+package de.kencommand.api.structure.argument.types;
+
+import de.kencommand.api.structure.argument.ArgumentType;
+import de.kencommand.api.structure.argument.SuggestionProvider;
+import de.kencommand.api.structure.argument.suggestion.NoSuggestionProvider;
+import lombok.AccessLevel;
+import lombok.NoArgsConstructor;
+
+@NoArgsConstructor(access = AccessLevel.PRIVATE)
+public class IntegerArgumentType implements ArgumentType<Integer> {
+
+    @Override
+    public Integer parseInput(String string) {
+        return Integer.parseInt(string);
+    }
+
+    @Override
+    public SuggestionProvider<?> defaultSuggestionProvider() {
+        return NoSuggestionProvider.create();
+    }
+
+    public static IntegerArgumentType create() {
+        return new IntegerArgumentType();
+    }
+}