diff --git a/runelite-api/src/main/java/net/runelite/api/Client.java b/runelite-api/src/main/java/net/runelite/api/Client.java
index 6efbd4f892..0fc76067ce 100644
--- a/runelite-api/src/main/java/net/runelite/api/Client.java
+++ b/runelite-api/src/main/java/net/runelite/api/Client.java
@@ -407,6 +407,11 @@ public interface Client extends GameShell
 	 */
 	IndexDataBase getIndexScripts();
 
+	/**
+	 * Gets the config index.
+	 */
+	IndexDataBase getIndexConfig();
+
 	/**
 	 * Returns the x-axis base coordinate.
 	 * <p>
@@ -769,6 +774,16 @@ public interface Client extends GameShell
 	 */
 	void setVarbit(Varbits varbit, int value);
 
+	/**
+	 * Gets the varbit composition for a given varbit id
+	 *
+	 * @param id
+	 * @return
+	 */
+	@VisibleForDevtools
+	@Nullable
+	VarbitComposition getVarbit(int id);
+
 	/**
 	 * Gets the value of a given variable.
 	 *
diff --git a/runelite-api/src/main/java/net/runelite/api/IndexDataBase.java b/runelite-api/src/main/java/net/runelite/api/IndexDataBase.java
index 58fb7d498a..bb96b6801d 100644
--- a/runelite-api/src/main/java/net/runelite/api/IndexDataBase.java
+++ b/runelite-api/src/main/java/net/runelite/api/IndexDataBase.java
@@ -9,4 +9,11 @@ public interface IndexDataBase
 	 * Returns true if any cache overlay in this index is outdated due to hash mismatch
 	 */
 	boolean isOverlayOutdated();
+
+	/**
+	 * Get the child file ids for a given archive
+	 * @param archiveId
+	 * @return
+	 */
+	int[] getFileIds(int archiveId);
 }
diff --git a/runelite-api/src/main/java/net/runelite/api/VarbitComposition.java b/runelite-api/src/main/java/net/runelite/api/VarbitComposition.java
new file mode 100644
index 0000000000..1e46fd4d76
--- /dev/null
+++ b/runelite-api/src/main/java/net/runelite/api/VarbitComposition.java
@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 2020, Adam <Adam@sigterm.info>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+package net.runelite.api;
+
+public interface VarbitComposition
+{
+	/**
+	 * The varp index for this varbit
+	 *
+	 * @return
+	 */
+	int getIndex();
+
+	/**
+	 * The least significant bit of the varbit
+	 *
+	 * @return
+	 */
+	int getLeastSignificantBit();
+
+	/**
+	 * The most significant bit of the varbit (inclusive)
+	 *
+	 * @return
+	 */
+	int getMostSignificantBit();
+}