diff --git a/README.md b/README.md
index 7afea9d80..1b2be3a44 100644
--- a/README.md
+++ b/README.md
@@ -70,7 +70,7 @@ the `build/libs` directory.
 
 License:
 --------
-The entirety of the [API directory](api) is licensed under the MIT License; see [licenses/MIT.md](licenses/MIT.md) for
+The entirety of the [API directory](api) (including the legacy API directory) is licensed under the MIT License; see [licenses/MIT.md](licenses/MIT.md) for
 details.
 
 Everything else, unless explicitly stated otherwise, is licensed under the GNU General Public License, including the end
diff --git a/api-legacy/build.gradle.kts b/api-legacy/build.gradle.kts
new file mode 100644
index 000000000..a42a4f44d
--- /dev/null
+++ b/api-legacy/build.gradle.kts
@@ -0,0 +1,3 @@
+dependencies {
+    compileOnly(projects.viaversionApi)
+}
\ No newline at end of file
diff --git a/api-legacy/src/main/java/us/myles/ViaVersion/api/Via.java b/api-legacy/src/main/java/us/myles/ViaVersion/api/Via.java
new file mode 100644
index 000000000..c29f189e6
--- /dev/null
+++ b/api-legacy/src/main/java/us/myles/ViaVersion/api/Via.java
@@ -0,0 +1,102 @@
+/*
+ * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
+ * Copyright (C) 2016-2021 ViaVersion and contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package us.myles.ViaVersion.api;
+
+import io.netty.buffer.ByteBuf;
+import us.myles.ViaVersion.api.boss.BossBar;
+import us.myles.ViaVersion.api.boss.BossColor;
+import us.myles.ViaVersion.api.boss.BossStyle;
+
+import java.util.SortedSet;
+import java.util.UUID;
+
+/**
+ * @deprecated may be removed at some point, use {@link com.viaversion.viaversion.api.Via}
+ */
+@Deprecated
+public class Via<T> implements ViaAPI<T> {
+
+    private static final ViaAPI INSTANCE = new Via();
+
+    private Via() {
+    }
+
+    @Deprecated
+    public static ViaAPI getAPI() {
+        return INSTANCE;
+    }
+
+    @Override
+    public int getPlayerVersion(T player) {
+        return com.viaversion.viaversion.api.Via.getAPI().getPlayerVersion(player);
+    }
+
+    @Override
+    public int getPlayerVersion(UUID uuid) {
+        return com.viaversion.viaversion.api.Via.getAPI().getPlayerVersion(uuid);
+    }
+
+    @Override
+    public boolean isInjected(UUID playerUUID) {
+        return com.viaversion.viaversion.api.Via.getAPI().isInjected(playerUUID);
+    }
+
+    @Override
+    public String getVersion() {
+        return com.viaversion.viaversion.api.Via.getAPI().getVersion();
+    }
+
+    @Override
+    public void sendRawPacket(T player, ByteBuf packet) {
+        com.viaversion.viaversion.api.Via.getAPI().sendRawPacket(player, packet);
+    }
+
+    @Override
+    public void sendRawPacket(UUID uuid, ByteBuf packet) {
+        com.viaversion.viaversion.api.Via.getAPI().sendRawPacket(uuid, packet);
+    }
+
+    @Override
+    public BossBar createBossBar(String title, BossColor color, BossStyle style) {
+        return new BossBar(com.viaversion.viaversion.api.Via.getAPI().createBossBar(title,
+                com.viaversion.viaversion.api.boss.BossColor.values()[color.ordinal()],
+                com.viaversion.viaversion.api.boss.BossStyle.values()[style.ordinal()]));
+    }
+
+    @Override
+    public BossBar createBossBar(String title, float health, BossColor color, BossStyle style) {
+        return new BossBar(com.viaversion.viaversion.api.Via.getAPI().createBossBar(title, health,
+                com.viaversion.viaversion.api.boss.BossColor.values()[color.ordinal()],
+                com.viaversion.viaversion.api.boss.BossStyle.values()[style.ordinal()]));
+    }
+
+    @Override
+    public SortedSet<Integer> getSupportedVersions() {
+        return com.viaversion.viaversion.api.Via.getAPI().getSupportedVersions();
+    }
+
+    @Override
+    public SortedSet<Integer> getFullSupportedVersions() {
+        return com.viaversion.viaversion.api.Via.getAPI().getFullSupportedVersions();
+    }
+}
diff --git a/api-legacy/src/main/java/us/myles/ViaVersion/api/ViaAPI.java b/api-legacy/src/main/java/us/myles/ViaVersion/api/ViaAPI.java
new file mode 100644
index 000000000..a255bf86b
--- /dev/null
+++ b/api-legacy/src/main/java/us/myles/ViaVersion/api/ViaAPI.java
@@ -0,0 +1,63 @@
+/*
+ * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
+ * Copyright (C) 2016-2021 ViaVersion and contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package us.myles.ViaVersion.api;
+
+import com.viaversion.viaversion.api.Via;
+import io.netty.buffer.ByteBuf;
+import us.myles.ViaVersion.api.boss.BossBar;
+import us.myles.ViaVersion.api.boss.BossColor;
+import us.myles.ViaVersion.api.boss.BossStyle;
+
+import java.util.SortedSet;
+import java.util.UUID;
+
+/**
+ * @deprecated may be removed at some point, use {@link Via#getAPI()}
+ */
+@Deprecated
+public interface ViaAPI<T> {
+
+    int getPlayerVersion(T player);
+
+    int getPlayerVersion(UUID uuid);
+
+    default boolean isPorted(UUID playerUUID) {
+        return isInjected(playerUUID);
+    }
+
+    boolean isInjected(UUID playerUUID);
+
+    String getVersion();
+
+    void sendRawPacket(T player, ByteBuf packet);
+
+    void sendRawPacket(UUID uuid, ByteBuf packet);
+
+    BossBar createBossBar(String title, BossColor color, BossStyle style);
+
+    BossBar createBossBar(String title, float health, BossColor color, BossStyle style);
+
+    SortedSet<Integer> getSupportedVersions();
+
+    SortedSet<Integer> getFullSupportedVersions();
+}
diff --git a/api-legacy/src/main/java/us/myles/ViaVersion/api/boss/BossBar.java b/api-legacy/src/main/java/us/myles/ViaVersion/api/boss/BossBar.java
new file mode 100644
index 000000000..8c7460f39
--- /dev/null
+++ b/api-legacy/src/main/java/us/myles/ViaVersion/api/boss/BossBar.java
@@ -0,0 +1,135 @@
+/*
+ * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
+ * Copyright (C) 2016-2021 ViaVersion and contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package us.myles.ViaVersion.api.boss;
+
+import java.util.Set;
+import java.util.UUID;
+
+@Deprecated
+public class BossBar<T> {
+
+    private final com.viaversion.viaversion.api.boss.BossBar<T> bossBar;
+
+    public BossBar(com.viaversion.viaversion.api.boss.BossBar<T> bossBar) {
+        this.bossBar = bossBar;
+    }
+
+    public String getTitle() {
+        return bossBar.getTitle();
+    }
+
+    public BossBar setTitle(String title) {
+        bossBar.setTitle(title);
+        return this;
+    }
+
+    public float getHealth() {
+        return bossBar.getHealth();
+    }
+
+    public BossBar setHealth(float health) {
+        bossBar.setHealth(health);
+        return this;
+    }
+
+    public BossColor getColor() {
+        return BossColor.values()[bossBar.getColor().ordinal()];
+    }
+
+    public BossBar setColor(BossColor color) {
+        bossBar.setColor(com.viaversion.viaversion.api.boss.BossColor.values()[color.ordinal()]);
+        return this;
+    }
+
+    public BossStyle getStyle() {
+        return BossStyle.values()[bossBar.getStyle().ordinal()];
+    }
+
+    public BossBar setStyle(BossStyle style) {
+        bossBar.setStyle(com.viaversion.viaversion.api.boss.BossStyle.values()[style.ordinal()]);
+        return this;
+    }
+
+    public BossBar addPlayer(T player) {
+        bossBar.addPlayer(player);
+        return this;
+    }
+
+    public BossBar addPlayer(UUID player) {
+        bossBar.addPlayer(player);
+        return this;
+    }
+
+    @Deprecated
+    public BossBar addPlayers(T... players) {
+        bossBar.addPlayers(players);
+        return this;
+    }
+
+    @Deprecated
+    public BossBar removePlayer(T player) {
+        bossBar.removePlayer(player);
+        return this;
+    }
+
+    public BossBar removePlayer(UUID uuid) {
+        bossBar.removePlayer(uuid);
+        return this;
+    }
+
+    public BossBar addFlag(BossFlag flag) {
+        bossBar.addFlag(com.viaversion.viaversion.api.boss.BossFlag.values()[flag.ordinal()]);
+        return this;
+    }
+
+    public BossBar removeFlag(BossFlag flag) {
+        bossBar.removeFlag(com.viaversion.viaversion.api.boss.BossFlag.values()[flag.ordinal()]);
+        return this;
+    }
+
+    public boolean hasFlag(BossFlag flag) {
+        return bossBar.hasFlag(com.viaversion.viaversion.api.boss.BossFlag.values()[flag.ordinal()]);
+    }
+
+    public Set<UUID> getPlayers() {
+        return bossBar.getPlayers();
+    }
+
+    public BossBar show() {
+        bossBar.show();
+        return this;
+    }
+
+    public BossBar hide() {
+        bossBar.hide();
+        return this;
+    }
+
+    public boolean isVisible() {
+        return bossBar.isVisible();
+    }
+
+    public UUID getId() {
+        return bossBar.getId();
+    }
+}
diff --git a/api-legacy/src/main/java/us/myles/ViaVersion/api/boss/BossColor.java b/api-legacy/src/main/java/us/myles/ViaVersion/api/boss/BossColor.java
new file mode 100644
index 000000000..b325ede00
--- /dev/null
+++ b/api-legacy/src/main/java/us/myles/ViaVersion/api/boss/BossColor.java
@@ -0,0 +1,45 @@
+/*
+ * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
+ * Copyright (C) 2016-2021 ViaVersion and contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package us.myles.ViaVersion.api.boss;
+
+@Deprecated
+public enum BossColor {
+
+    PINK(0),
+    BLUE(1),
+    RED(2),
+    GREEN(3),
+    YELLOW(4),
+    PURPLE(5),
+    WHITE(6);
+
+    private final int id;
+
+    BossColor(int id) {
+        this.id = id;
+    }
+
+    public int getId() {
+        return id;
+    }
+}
diff --git a/api-legacy/src/main/java/us/myles/ViaVersion/api/boss/BossFlag.java b/api-legacy/src/main/java/us/myles/ViaVersion/api/boss/BossFlag.java
new file mode 100644
index 000000000..14cf29a19
--- /dev/null
+++ b/api-legacy/src/main/java/us/myles/ViaVersion/api/boss/BossFlag.java
@@ -0,0 +1,40 @@
+/*
+ * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
+ * Copyright (C) 2016-2021 ViaVersion and contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package us.myles.ViaVersion.api.boss;
+
+@Deprecated
+public enum BossFlag {
+
+    DARKEN_SKY(1),
+    PLAY_BOSS_MUSIC(2);
+
+    private final int id;
+
+    BossFlag(int id) {
+        this.id = id;
+    }
+
+    public int getId() {
+        return id;
+    }
+}
diff --git a/api-legacy/src/main/java/us/myles/ViaVersion/api/boss/BossStyle.java b/api-legacy/src/main/java/us/myles/ViaVersion/api/boss/BossStyle.java
new file mode 100644
index 000000000..2e9567635
--- /dev/null
+++ b/api-legacy/src/main/java/us/myles/ViaVersion/api/boss/BossStyle.java
@@ -0,0 +1,43 @@
+/*
+ * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
+ * Copyright (C) 2016-2021 ViaVersion and contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package us.myles.ViaVersion.api.boss;
+
+@Deprecated
+public enum BossStyle {
+
+    SOLID(0),
+    SEGMENTED_6(1),
+    SEGMENTED_10(2),
+    SEGMENTED_12(3),
+    SEGMENTED_20(4);
+
+    private final int id;
+
+    BossStyle(int id) {
+        this.id = id;
+    }
+
+    public int getId() {
+        return id;
+    }
+}
diff --git a/common/build.gradle.kts b/common/build.gradle.kts
index 8d6ef9165..99e589eac 100644
--- a/common/build.gradle.kts
+++ b/common/build.gradle.kts
@@ -9,4 +9,5 @@ blossom {
 
 dependencies {
     api(projects.viaversionApi)
+    api(projects.viaversionApiLegacy)
 }
diff --git a/settings.gradle.kts b/settings.gradle.kts
index f19cd4ee3..db3f54f08 100644
--- a/settings.gradle.kts
+++ b/settings.gradle.kts
@@ -7,6 +7,7 @@ include("adventure")
 include("java-compat", "java-compat:java-compat-common", "java-compat:java-compat-unsafe")
 
 setupViaSubproject("api")
+setupViaSubproject("api-legacy")
 setupViaSubproject("common")
 setupViaSubproject("bukkit")
 setupViaSubproject("bukkit-legacy")