diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..087fa3a
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,160 @@
+# Created by .ignore support plugin (hsz.mobi)
+### JetBrains template
+# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio and WebStorm
+# Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
+
+# User-specific stuff
+.idea/**/workspace.xml
+.idea/**/tasks.xml
+.idea/**/dictionaries
+.idea/**/shelf
+
+# Sensitive or high-churn files
+.idea/**/dataSources/
+.idea/**/dataSources.ids
+.idea/**/dataSources.local.xml
+.idea/**/sqlDataSources.xml
+.idea/**/dynamic.xml
+.idea/**/uiDesigner.xml
+.idea/**/dbnavigator.xml
+.idea/
+
+# Gradle
+.idea/**/gradle.xml
+.idea/**/libraries
+
+# CMake
+cmake-build-debug/
+cmake-build-release/
+
+# Mongo Explorer plugin
+.idea/**/mongoSettings.xml
+
+# File-based project format
+*.iws
+
+# IntelliJ
+out/
+
+# mpeltonen/sbt-idea plugin
+.idea_modules/
+
+# JIRA plugin
+atlassian-ide-plugin.xml
+
+# Cursive Clojure plugin
+.idea/replstate.xml
+
+# Crashlytics plugin (for Android Studio and IntelliJ)
+com_crashlytics_export_strings.xml
+crashlytics.properties
+crashlytics-build.properties
+fabric.properties
+
+# Editor-based Rest Client
+.idea/httpRequests
+### Java template
+# Compiled class file
+*.class
+
+# Log file
+*.log
+
+# BlueJ files
+*.ctxt
+
+# Mobile Tools for Java (J2ME)
+.mtj.tmp/
+
+# Package Files #
+*.jar
+*.war
+*.nar
+*.ear
+*.zip
+*.tar.gz
+*.rar
+
+# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
+hs_err_pid*
+### Eclipse template
+
+.metadata
+bin/
+tmp/
+*.tmp
+*.bak
+*.swp
+*~.nib
+local.properties
+.settings/
+.loadpath
+.recommenders
+
+# External tool builders
+.externalToolBuilders/
+
+# Locally stored "Eclipse launch configurations"
+*.launch
+
+# PyDev specific (Python IDE for Eclipse)
+*.pydevproject
+
+# CDT-specific (C/C++ Development Tooling)
+.cproject
+
+# CDT- autotools
+.autotools
+
+# Java annotation processor (APT)
+.factorypath
+
+# PDT-specific (PHP Development Tools)
+.buildpath
+
+# sbteclipse plugin
+.target
+
+# Tern plugin
+.tern-project
+
+# TeXlipse plugin
+.texlipse
+
+# STS (Spring Tool Suite)
+.springBeans
+
+# Code Recommenders
+.recommenders/
+
+# Scala IDE specific (Scala & Java development for Eclipse)
+.cache-main
+.scala_dependencies
+.worksheet
+### Gradle template
+.gradle
+/build/
+
+# Ignore Gradle GUI config
+gradle-app.setting
+
+# Avoid ignoring Gradle wrapper jar file (.jar files are usually ignored)
+!gradle-wrapper.jar
+
+# Cache of project
+.gradletasknamecache
+
+# # Work around https://youtrack.jetbrains.com/issue/IDEA-116898
+# gradle/wrapper/gradle-wrapper.properties
+### Kotlin template
+# Compiled class file
+
+# Log file
+
+# BlueJ files
+
+# Mobile Tools for Java (J2ME)
+
+# Package Files #
+
+# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
diff --git a/build.gradle b/build.gradle
new file mode 100644
index 0000000..2ba8a04
--- /dev/null
+++ b/build.gradle
@@ -0,0 +1,35 @@
+plugins {
+    id 'java'
+    id 'org.jetbrains.kotlin.jvm' version '1.3.21'
+}
+
+group 'io.github.thefrontier'
+version '1.0-SNAPSHOT'
+
+sourceCompatibility = 1.8
+
+repositories {
+    mavenCentral()
+    jcenter()
+    maven { url 'https://jitpack.io' }
+    maven {
+        name = 'sponge-repo'
+        url = 'https://repo.spongepowered.org/maven'
+    }
+}
+
+dependencies {
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8"
+    implementation "org.jetbrains.kotlin:kotlin-reflect"
+
+    implementation 'org.spongepowered:spongeapi:7.1.0'
+
+    implementation 'com.github.TheFrontier:SKE:8618c9d738'
+}
+
+compileKotlin {
+    kotlinOptions.jvmTarget = "1.8"
+}
+compileTestKotlin {
+    kotlinOptions.jvmTarget = "1.8"
+}
\ No newline at end of file
diff --git a/gradle.properties b/gradle.properties
new file mode 100644
index 0000000..29e08e8
--- /dev/null
+++ b/gradle.properties
@@ -0,0 +1 @@
+kotlin.code.style=official
\ No newline at end of file
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000..28861d2
Binary files /dev/null and b/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000..bc744c7
--- /dev/null
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Sun Mar 17 16:31:25 CDT 2019
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10-all.zip
diff --git a/gradlew b/gradlew
new file mode 100644
index 0000000..cccdd3d
--- /dev/null
+++ b/gradlew
@@ -0,0 +1,172 @@
+#!/usr/bin/env sh
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "$@"
diff --git a/gradlew.bat b/gradlew.bat
new file mode 100644
index 0000000..f955316
--- /dev/null
+++ b/gradlew.bat
@@ -0,0 +1,84 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/settings.gradle b/settings.gradle
new file mode 100644
index 0000000..165d2a8
--- /dev/null
+++ b/settings.gradle
@@ -0,0 +1,2 @@
+rootProject.name = 'skc'
+
diff --git a/src/main/kotlin/frontier/skc/ParameterMapping.kt b/src/main/kotlin/frontier/skc/ParameterMapping.kt
new file mode 100644
index 0000000..4e02183
--- /dev/null
+++ b/src/main/kotlin/frontier/skc/ParameterMapping.kt
@@ -0,0 +1,7 @@
+package frontier.skc
+
+import org.spongepowered.api.command.args.CommandElement
+import org.spongepowered.api.text.Text
+import kotlin.reflect.KParameter
+
+typealias ParameterMapping = (KParameter) -> ((Text) -> CommandElement)?
\ No newline at end of file
diff --git a/src/main/kotlin/frontier/skc/ParameterMappings.kt b/src/main/kotlin/frontier/skc/ParameterMappings.kt
new file mode 100644
index 0000000..3057665
--- /dev/null
+++ b/src/main/kotlin/frontier/skc/ParameterMappings.kt
@@ -0,0 +1,137 @@
+package frontier.skc
+
+import com.flowpowered.math.vector.Vector3d
+import frontier.skc.annotation.OrSource
+import frontier.skc.annotation.RemainingJoined
+import frontier.skc.annotation.Serialized
+import frontier.skc.annotation.Source
+import frontier.skc.util.CommandSourceCommandElement
+import frontier.skc.util.directlyMatchOnType
+import frontier.skc.util.isSubtypeOf
+import frontier.skc.util.matchOnType
+import frontier.ske.gameRegistry
+import frontier.ske.getType
+import org.spongepowered.api.CatalogType
+import org.spongepowered.api.command.CommandSource
+import org.spongepowered.api.command.args.CommandElement
+import org.spongepowered.api.command.args.GenericArguments
+import org.spongepowered.api.entity.living.player.Player
+import org.spongepowered.api.entity.living.player.User
+import org.spongepowered.api.plugin.PluginContainer
+import org.spongepowered.api.text.Text
+import org.spongepowered.api.text.serializer.TextSerializer
+import org.spongepowered.api.text.serializer.TextSerializers
+import org.spongepowered.api.world.DimensionType
+import org.spongepowered.api.world.Location
+import org.spongepowered.api.world.World
+import org.spongepowered.api.world.storage.WorldProperties
+import java.math.BigDecimal
+import java.math.BigInteger
+import kotlin.reflect.KClass
+import kotlin.reflect.KParameter
+import kotlin.reflect.full.findAnnotation
+import kotlin.reflect.full.isSubclassOf
+
+object ParameterMappings {
+
+    val PLAYER: ParameterMapping = matchOnType<Player> {
+        when {
+            it.findAnnotation<OrSource>() != null -> GenericArguments::playerOrSource
+            else -> GenericArguments::player
+        }
+    }
+
+    val USER: ParameterMapping = matchOnType<User> {
+        when {
+            it.findAnnotation<OrSource>() != null -> GenericArguments::userOrSource
+            else -> GenericArguments::user
+        }
+    }
+
+    val STRING: ParameterMapping = matchOnType<String> {
+        when (it.findAnnotation<RemainingJoined>()?.raw) {
+            true -> GenericArguments::remainingRawJoinedStrings
+            false -> GenericArguments::remainingJoinedStrings
+            else -> GenericArguments::string
+        }
+    }
+
+    val BOOLEAN: ParameterMapping = directlyMatchOnType<Boolean>(GenericArguments::bool)
+
+    val INT: ParameterMapping = directlyMatchOnType<Int>(GenericArguments::integer)
+
+    val LONG: ParameterMapping = directlyMatchOnType<Long>(GenericArguments::longNum)
+
+    val DOUBLE: ParameterMapping = directlyMatchOnType<Float>(GenericArguments::doubleNum)
+
+    val BIGINTEGER: ParameterMapping = directlyMatchOnType<BigInteger>(GenericArguments::bigInteger)
+
+    val BIGDECIMAL: ParameterMapping = directlyMatchOnType<BigDecimal>(GenericArguments::bigDecimal)
+
+    val LOCATION: ParameterMapping = directlyMatchOnType<Location<World>>(GenericArguments::location)
+
+    val VECTOR3D: ParameterMapping = directlyMatchOnType<Vector3d>(GenericArguments::vector3d)
+
+    val WORLD: ParameterMapping = directlyMatchOnType<WorldProperties>(GenericArguments::world)
+
+    val DIMENSION: ParameterMapping = directlyMatchOnType<DimensionType>(GenericArguments::dimension)
+
+    val PLUGIN: ParameterMapping = directlyMatchOnType<PluginContainer>(GenericArguments::plugin)
+
+    val TEXT: ParameterMapping = matchOnType<Text> {
+        val serializer = it.findAnnotation<Serialized>()?.let { serialized ->
+            gameRegistry.getType<TextSerializer>(serialized.id)
+        } ?: TextSerializers.FORMATTING_CODE
+
+        val allRemaining = it.findAnnotation<RemainingJoined>()
+
+        return@matchOnType { key ->
+            GenericArguments.text(key, serializer, allRemaining != null)
+        }
+    }
+
+    @Suppress("UNCHECKED_CAST")
+    val CATALOG_TYPE: ParameterMapping = {
+        when (it.type.isSubtypeOf<CatalogType>()) {
+            true -> {
+                val clazz = (it.type.classifier as KClass<out CatalogType>).java
+
+                { key ->
+                    GenericArguments.catalogedElement(key, clazz)
+                }
+            }
+            else -> null
+        }
+    }
+
+    @Suppress("UNCHECKED_CAST")
+    fun commandSource(parameter: KParameter): ((Text) -> CommandElement)? {
+        val type = parameter.type.classifier as? KClass<*> ?: return null
+
+        return if (parameter.findAnnotation<Source>() != null && type.isSubclassOf(CommandSource::class)) {
+            { key -> CommandSourceCommandElement(key, type as KClass<out CommandSource>) }
+        } else {
+            null
+        }
+    }
+
+    val DEFAULT = listOf(
+        ::commandSource,
+        PLAYER,
+        USER,
+        STRING,
+        BOOLEAN,
+        INT,
+        LONG,
+        DOUBLE,
+        BIGINTEGER,
+        BIGDECIMAL,
+        LOCATION,
+        VECTOR3D,
+        WORLD,
+        DIMENSION,
+        PLUGIN,
+        TEXT,
+        CATALOG_TYPE
+    )
+}
\ No newline at end of file
diff --git a/src/main/kotlin/frontier/skc/SKCCommand.kt b/src/main/kotlin/frontier/skc/SKCCommand.kt
new file mode 100644
index 0000000..f8667b1
--- /dev/null
+++ b/src/main/kotlin/frontier/skc/SKCCommand.kt
@@ -0,0 +1,41 @@
+package frontier.skc
+
+import com.google.inject.Injector
+import frontier.skc.annotation.Command
+import frontier.skc.util.newSpec
+import frontier.ske.commandManager
+import kotlin.reflect.KClass
+import kotlin.reflect.KFunction
+import kotlin.reflect.full.findAnnotation
+
+class SKCCommand(
+    private val mappings: List<ParameterMapping> = ParameterMappings.DEFAULT,
+    private val injector: Injector? = null
+) {
+
+    inline fun <reified T : Any> register(plugin: Any) = register(plugin, T::class)
+
+    fun register() {
+
+    }
+
+    fun register(plugin: Any, clazz: KClass<*>) {
+        val command = requireNotNull(clazz.findAnnotation<Command>()) {
+            "${clazz.simpleName} must be annotated with @Command"
+        }
+
+        val spec = clazz.newSpec(mappings, injector).build()
+
+        commandManager.register(plugin, spec, *command.aliases)
+    }
+
+    fun register(plugin: Any, function: KFunction<*>) {
+        val command = requireNotNull(function.findAnnotation<Command>()) {
+            "${function.name} must be annotated with @Command"
+        }
+
+        val spec = function.newSpec(mappings).build()
+
+        commandManager.register(plugin, spec, *command.aliases)
+    }
+}
\ No newline at end of file
diff --git a/src/main/kotlin/frontier/skc/annotation/Command.kt b/src/main/kotlin/frontier/skc/annotation/Command.kt
new file mode 100644
index 0000000..012a405
--- /dev/null
+++ b/src/main/kotlin/frontier/skc/annotation/Command.kt
@@ -0,0 +1,4 @@
+package frontier.skc.annotation
+
+@Target(AnnotationTarget.FUNCTION, AnnotationTarget.CLASS)
+annotation class Command(vararg val aliases: String)
diff --git a/src/main/kotlin/frontier/skc/annotation/Description.kt b/src/main/kotlin/frontier/skc/annotation/Description.kt
new file mode 100644
index 0000000..ff29c2a
--- /dev/null
+++ b/src/main/kotlin/frontier/skc/annotation/Description.kt
@@ -0,0 +1,4 @@
+package frontier.skc.annotation
+
+@Target(AnnotationTarget.FUNCTION, AnnotationTarget.CLASS)
+annotation class Description(val value: String)
\ No newline at end of file
diff --git a/src/main/kotlin/frontier/skc/annotation/Executor.kt b/src/main/kotlin/frontier/skc/annotation/Executor.kt
new file mode 100644
index 0000000..ccb0a3f
--- /dev/null
+++ b/src/main/kotlin/frontier/skc/annotation/Executor.kt
@@ -0,0 +1,4 @@
+package frontier.skc.annotation
+
+@Target(AnnotationTarget.FUNCTION)
+annotation class Executor
\ No newline at end of file
diff --git a/src/main/kotlin/frontier/skc/annotation/Flag.kt b/src/main/kotlin/frontier/skc/annotation/Flag.kt
new file mode 100644
index 0000000..aa83ee7
--- /dev/null
+++ b/src/main/kotlin/frontier/skc/annotation/Flag.kt
@@ -0,0 +1,4 @@
+package frontier.skc.annotation
+
+@Target(AnnotationTarget.VALUE_PARAMETER)
+annotation class Flag(vararg val specs: String)
\ No newline at end of file
diff --git a/src/main/kotlin/frontier/skc/annotation/OrSource.kt b/src/main/kotlin/frontier/skc/annotation/OrSource.kt
new file mode 100644
index 0000000..29b5156
--- /dev/null
+++ b/src/main/kotlin/frontier/skc/annotation/OrSource.kt
@@ -0,0 +1,4 @@
+package frontier.skc.annotation
+
+@Target(AnnotationTarget.VALUE_PARAMETER)
+annotation class OrSource
diff --git a/src/main/kotlin/frontier/skc/annotation/Permission.kt b/src/main/kotlin/frontier/skc/annotation/Permission.kt
new file mode 100644
index 0000000..e55af48
--- /dev/null
+++ b/src/main/kotlin/frontier/skc/annotation/Permission.kt
@@ -0,0 +1,4 @@
+package frontier.skc.annotation
+
+@Target(AnnotationTarget.FUNCTION, AnnotationTarget.CLASS, AnnotationTarget.VALUE_PARAMETER)
+annotation class Permission(val value: String)
\ No newline at end of file
diff --git a/src/main/kotlin/frontier/skc/annotation/Regex.kt b/src/main/kotlin/frontier/skc/annotation/Regex.kt
new file mode 100644
index 0000000..4034b69
--- /dev/null
+++ b/src/main/kotlin/frontier/skc/annotation/Regex.kt
@@ -0,0 +1,7 @@
+package frontier.skc.annotation
+
+import org.intellij.lang.annotations.Language
+import javax.annotation.RegEx
+
+@Target(AnnotationTarget.VALUE_PARAMETER)
+annotation class Regex(@RegEx @Language("regexp") val regex: String)
\ No newline at end of file
diff --git a/src/main/kotlin/frontier/skc/annotation/RemainingJoined.kt b/src/main/kotlin/frontier/skc/annotation/RemainingJoined.kt
new file mode 100644
index 0000000..5885413
--- /dev/null
+++ b/src/main/kotlin/frontier/skc/annotation/RemainingJoined.kt
@@ -0,0 +1,4 @@
+package frontier.skc.annotation
+
+@Target(AnnotationTarget.VALUE_PARAMETER)
+annotation class RemainingJoined(val raw: Boolean = false)
\ No newline at end of file
diff --git a/src/main/kotlin/frontier/skc/annotation/Serialized.kt b/src/main/kotlin/frontier/skc/annotation/Serialized.kt
new file mode 100644
index 0000000..f8870fb
--- /dev/null
+++ b/src/main/kotlin/frontier/skc/annotation/Serialized.kt
@@ -0,0 +1,4 @@
+package frontier.skc.annotation
+
+@Target(AnnotationTarget.VALUE_PARAMETER)
+annotation class Serialized(val id: String = "sponge:formatting_code_&")
\ No newline at end of file
diff --git a/src/main/kotlin/frontier/skc/annotation/Source.kt b/src/main/kotlin/frontier/skc/annotation/Source.kt
new file mode 100644
index 0000000..2ed4293
--- /dev/null
+++ b/src/main/kotlin/frontier/skc/annotation/Source.kt
@@ -0,0 +1,4 @@
+package frontier.skc.annotation
+
+@Target(AnnotationTarget.VALUE_PARAMETER)
+annotation class Source
\ No newline at end of file
diff --git a/src/main/kotlin/frontier/skc/annotation/Weak.kt b/src/main/kotlin/frontier/skc/annotation/Weak.kt
new file mode 100644
index 0000000..db2f219
--- /dev/null
+++ b/src/main/kotlin/frontier/skc/annotation/Weak.kt
@@ -0,0 +1,4 @@
+package frontier.skc.annotation
+
+@Target(AnnotationTarget.VALUE_PARAMETER)
+annotation class Weak
\ No newline at end of file
diff --git a/src/main/kotlin/frontier/skc/util/CommandSourceCommandElement.kt b/src/main/kotlin/frontier/skc/util/CommandSourceCommandElement.kt
new file mode 100644
index 0000000..87a9403
--- /dev/null
+++ b/src/main/kotlin/frontier/skc/util/CommandSourceCommandElement.kt
@@ -0,0 +1,28 @@
+package frontier.skc.util
+
+import frontier.ske.text.not
+import org.spongepowered.api.command.CommandException
+import org.spongepowered.api.command.CommandSource
+import org.spongepowered.api.command.args.CommandArgs
+import org.spongepowered.api.command.args.CommandContext
+import org.spongepowered.api.command.args.CommandElement
+import org.spongepowered.api.text.Text
+import kotlin.reflect.KClass
+
+class CommandSourceCommandElement(key: Text, private val required: KClass<out CommandSource> = CommandSource::class) :
+    CommandElement(key) {
+
+    override fun parseValue(source: CommandSource, args: CommandArgs): Any? {
+        if (!required.isInstance(source)) {
+            throw CommandException(!"You must be a ${required.simpleName} to use that command!")
+        }
+
+        return source
+    }
+
+    override fun complete(src: CommandSource, args: CommandArgs, context: CommandContext): List<String> =
+        emptyList()
+
+    override fun getUsage(src: CommandSource): Text =
+        Text.EMPTY
+}
\ No newline at end of file
diff --git a/src/main/kotlin/frontier/skc/util/ConstantNoUsageCommandElement.kt b/src/main/kotlin/frontier/skc/util/ConstantNoUsageCommandElement.kt
new file mode 100644
index 0000000..f00f817
--- /dev/null
+++ b/src/main/kotlin/frontier/skc/util/ConstantNoUsageCommandElement.kt
@@ -0,0 +1,19 @@
+package frontier.skc.util
+
+import org.spongepowered.api.command.CommandSource
+import org.spongepowered.api.command.args.CommandArgs
+import org.spongepowered.api.command.args.CommandContext
+import org.spongepowered.api.command.args.CommandElement
+import org.spongepowered.api.text.Text
+
+class ConstantNoUsageCommandElement(key: Text, private val value: Any) : CommandElement(key) {
+
+    override fun parseValue(source: CommandSource, args: CommandArgs): Any? =
+        value
+
+    override fun complete(src: CommandSource, args: CommandArgs, context: CommandContext): List<String> =
+        emptyList()
+
+    override fun getUsage(src: CommandSource): Text =
+        Text.EMPTY
+}
\ No newline at end of file
diff --git a/src/main/kotlin/frontier/skc/util/KAnnotatedElement.kt b/src/main/kotlin/frontier/skc/util/KAnnotatedElement.kt
new file mode 100644
index 0000000..d3498ef
--- /dev/null
+++ b/src/main/kotlin/frontier/skc/util/KAnnotatedElement.kt
@@ -0,0 +1,16 @@
+package frontier.skc.util
+
+import frontier.skc.annotation.Description
+import frontier.skc.annotation.Permission
+import frontier.ske.text.unaryPlus
+import org.spongepowered.api.command.spec.CommandSpec
+import kotlin.reflect.KAnnotatedElement
+import kotlin.reflect.full.findAnnotation
+
+inline fun <reified T : Annotation> List<Annotation>.findAnnotation(): T? =
+    this.firstOrNull { it is T } as T?
+
+fun KAnnotatedElement.applyAnnotations(spec: CommandSpec.Builder) {
+    this.findAnnotation<Permission>()?.let { spec.permission(it.value) }
+    this.findAnnotation<Description>()?.let { spec.description(+it.value) }
+}
\ No newline at end of file
diff --git a/src/main/kotlin/frontier/skc/util/KClass.kt b/src/main/kotlin/frontier/skc/util/KClass.kt
new file mode 100644
index 0000000..d2ba8eb
--- /dev/null
+++ b/src/main/kotlin/frontier/skc/util/KClass.kt
@@ -0,0 +1,56 @@
+package frontier.skc.util
+
+import com.google.inject.Injector
+import frontier.skc.ParameterMapping
+import frontier.skc.annotation.Command
+import frontier.skc.annotation.Executor
+import org.spongepowered.api.command.spec.CommandSpec
+import kotlin.reflect.KClass
+import kotlin.reflect.full.findAnnotation
+import kotlin.reflect.full.functions
+
+fun KClass<*>.newSpec(mappings: List<ParameterMapping>, injector: Injector? = null): CommandSpec.Builder {
+    val spec = CommandSpec.builder()
+
+    val instance = this.objectInstance ?: requireNotNull(injector?.getInstance(this.java)) {
+        "Could not instantiate Command for ${this.simpleName}: must be an object, or provide an injector if class"
+    }
+
+    val finalMappings = mappings + ObjectInstanceParameterMapping(this, instance)
+
+    this.checkCommand()
+    this.applyAnnotations(spec)
+
+    // Register child objects/classes.
+    for (childClass in this.nestedClasses) {
+        val aliases = childClass.findAnnotation<Command>()?.aliases ?: continue
+        val childSpec = childClass.newSpec(finalMappings).build()
+        spec.child(childSpec, *aliases)
+    }
+
+    var hasDefault = false
+
+    // Register child functions and the default executor, if available.
+    for (childFunction in this.functions) {
+        if (childFunction.findAnnotation<Executor>() != null) {
+            // Found a default executor
+            require(!hasDefault) { "${this.simpleName} already has a default executor." }
+
+            spec.arguments(childFunction.mapParameters(finalMappings))
+            spec.executor(childFunction.createExecutor())
+
+            hasDefault = true
+        }
+
+        val aliases = childFunction.findAnnotation<Command>()?.aliases ?: continue
+        val childSpec = childFunction.newSpec(finalMappings).build()
+        spec.child(childSpec, *aliases)
+    }
+
+    return spec
+}
+
+fun KClass<*>.checkCommand() {
+    require(!this.isAbstract) { "Unsupported class modifier: abstract" }
+    require(!this.isSealed) { "Unsupported class modifier: sealed" }
+}
\ No newline at end of file
diff --git a/src/main/kotlin/frontier/skc/util/KFunction.kt b/src/main/kotlin/frontier/skc/util/KFunction.kt
new file mode 100644
index 0000000..16eaeff
--- /dev/null
+++ b/src/main/kotlin/frontier/skc/util/KFunction.kt
@@ -0,0 +1,81 @@
+package frontier.skc.util
+
+import frontier.skc.ParameterMapping
+import frontier.skc.annotation.Flag
+import frontier.skc.annotation.Permission
+import org.spongepowered.api.command.CommandResult
+import org.spongepowered.api.command.args.CommandElement
+import org.spongepowered.api.command.args.GenericArguments
+import org.spongepowered.api.command.spec.CommandExecutor
+import org.spongepowered.api.command.spec.CommandSpec
+import java.util.*
+import kotlin.reflect.KFunction
+import kotlin.reflect.full.findAnnotation
+import kotlin.reflect.jvm.isAccessible
+
+fun KFunction<*>.newSpec(mappings: List<ParameterMapping>): CommandSpec.Builder {
+    val spec = CommandSpec.builder()
+
+    this.checkCommand()
+    this.applyAnnotations(spec)
+
+    spec.arguments(this.mapParameters(mappings))
+    spec.executor(this.createExecutor())
+
+    return spec
+}
+
+fun KFunction<*>.checkCommand() {
+    require(this.isAccessible) { "Function must be accessible." }
+
+    require(this.returnType.isSubtypeOf<CommandResult>() || this.returnType.isSubtypeOf<Unit>()) {
+        "Unsupported return type (${this.returnType}), must be CommandResult or Unit"
+    }
+
+    require(!this.isAbstract) { "Unsupported function modifier: abstract" }
+    require(!this.isExternal) { "Unsupported function modifier: external" }
+    require(!this.isInfix) { "Unsupported function modifier: infix" }
+    require(!this.isInline) { "Unsupported function modifier: inline" }
+    require(!this.isOperator) { "Unsupported function modifier: operator" }
+    require(!this.isSuspend) { "Unsupported function modifier: suspend" }
+}
+
+fun KFunction<*>.mapParameters(mappings: List<ParameterMapping>): CommandElement {
+    val flags = GenericArguments.flags()
+    val elements = LinkedList<CommandElement>()
+
+    for (parameter in this.parameters) {
+        val flag = parameter.findAnnotation<Flag>()
+
+        if (flag != null) {
+            // Flag element.
+            if (parameter.type.isType<Boolean>()) {
+                // Boolean flag.
+                val permission = parameter.findAnnotation<Permission>()
+
+                when (permission) {
+                    null -> flags.flag(*flag.specs)
+                    else -> flags.permissionFlag(permission.value, *flag.specs)
+                }
+            } else {
+                // Value flag.
+                flags.valueFlag(mappings.match(parameter), *flag.specs)
+            }
+        } else {
+            // Non-flag element.
+            elements += mappings.match(parameter)
+        }
+    }
+
+    return flags.buildWith(GenericArguments.seq(*elements.toTypedArray()))
+}
+
+fun KFunction<*>.createExecutor(): CommandExecutor = CommandExecutor { _, ctx ->
+    val result = this.callBy(this.parameters.buildCallingArguments(ctx))
+
+    if (result is CommandResult) {
+        result
+    } else {
+        CommandResult.success()
+    }
+}
\ No newline at end of file
diff --git a/src/main/kotlin/frontier/skc/util/KParameter.kt b/src/main/kotlin/frontier/skc/util/KParameter.kt
new file mode 100644
index 0000000..dbf8e89
--- /dev/null
+++ b/src/main/kotlin/frontier/skc/util/KParameter.kt
@@ -0,0 +1,27 @@
+package frontier.skc.util
+
+import frontier.ske.text.not
+import org.spongepowered.api.command.CommandException
+import org.spongepowered.api.command.args.CommandContext
+import kotlin.reflect.KParameter
+
+val KParameter.effectiveName: String get() = this.name ?: "arg${this.index}"
+
+fun List<KParameter>.buildCallingArguments(ctx: CommandContext): Map<KParameter, Any?> {
+    val values = hashMapOf<KParameter, Any?>()
+
+    for (parameter in this) {
+        if (ctx.hasAny(parameter.effectiveName)) {
+            // A value is available, use it.
+            values[parameter] = ctx.requireOne(parameter.effectiveName)
+        } else if (parameter.type.isMarkedNullable) {
+            // No value is available, but the type is nullable, so set it to null.
+            values[parameter] = null
+        } else if (!parameter.isOptional) {
+            // There is no available value to use! What do we do?!
+            throw CommandException(!"No value found for parameter '${parameter.effectiveName}'")
+        }
+    }
+
+    return values
+}
\ No newline at end of file
diff --git a/src/main/kotlin/frontier/skc/util/KType.kt b/src/main/kotlin/frontier/skc/util/KType.kt
new file mode 100644
index 0000000..bdfeef7
--- /dev/null
+++ b/src/main/kotlin/frontier/skc/util/KType.kt
@@ -0,0 +1,11 @@
+package frontier.skc.util
+
+import kotlin.reflect.KType
+import kotlin.reflect.full.createType
+import kotlin.reflect.full.isSubtypeOf
+
+inline fun <reified T : Any> KType.isSubtypeOf() =
+    this.isSubtypeOf(T::class.createType())
+
+inline fun <reified T : Any> KType.isType() =
+    this.classifier == T::class
\ No newline at end of file
diff --git a/src/main/kotlin/frontier/skc/util/ObjectInstanceParameterMapping.kt b/src/main/kotlin/frontier/skc/util/ObjectInstanceParameterMapping.kt
new file mode 100644
index 0000000..47b8358
--- /dev/null
+++ b/src/main/kotlin/frontier/skc/util/ObjectInstanceParameterMapping.kt
@@ -0,0 +1,14 @@
+package frontier.skc.util
+
+import frontier.skc.ParameterMapping
+import org.spongepowered.api.command.args.CommandElement
+import org.spongepowered.api.text.Text
+import kotlin.reflect.KClass
+import kotlin.reflect.KParameter
+
+class ObjectInstanceParameterMapping(private val clazz: KClass<*>, private val instance: Any) : ParameterMapping {
+    override fun invoke(parameter: KParameter): ((Text) -> CommandElement)? = when (parameter.type.classifier) {
+        clazz -> { key -> ConstantNoUsageCommandElement(key, instance) }
+        else -> null
+    }
+}
\ No newline at end of file
diff --git a/src/main/kotlin/frontier/skc/util/ParameterMatching.kt b/src/main/kotlin/frontier/skc/util/ParameterMatching.kt
new file mode 100644
index 0000000..0805ca3
--- /dev/null
+++ b/src/main/kotlin/frontier/skc/util/ParameterMatching.kt
@@ -0,0 +1,52 @@
+package frontier.skc.util
+
+import frontier.skc.ParameterMapping
+import frontier.skc.annotation.Permission
+import frontier.skc.annotation.Weak
+import frontier.ske.text.not
+import org.spongepowered.api.command.args.CommandElement
+import org.spongepowered.api.command.args.GenericArguments
+import org.spongepowered.api.text.Text
+import kotlin.reflect.KParameter
+import kotlin.reflect.full.findAnnotation
+
+fun List<ParameterMapping>.match(parameter: KParameter): CommandElement {
+    var element: CommandElement? = null
+
+    for (mapper in this) {
+        element = mapper(parameter)?.invoke(!parameter.effectiveName)
+    }
+
+    var result = requireNotNull(element) {
+        "Could not find a ParameterMapping that matches ${parameter.type}"
+    }
+
+    parameter.findAnnotation<Permission>()?.let {
+        result = GenericArguments.requiringPermission(result, it.value)
+    }
+
+    if (parameter.isOptional || parameter.type.isMarkedNullable) {
+        result = when {
+            parameter.findAnnotation<Weak>() != null -> GenericArguments.optionalWeak(result)
+            else -> GenericArguments.optional(result)
+        }
+    }
+
+    return result
+}
+
+inline fun <reified T> matchOnType(crossinline process: ParameterMapping): ParameterMapping =
+    { parameter ->
+        when (parameter.type.classifier) {
+            T::class -> process(parameter)
+            else -> null
+        }
+    }
+
+inline fun <reified T> directlyMatchOnType(noinline init: (Text) -> CommandElement): ParameterMapping =
+    { parameter ->
+        when (parameter.type.classifier) {
+            T::class -> init
+            else -> null
+        }
+    }
\ No newline at end of file