diff --git a/src/main/java/io/supertokens/pluginInterface/oauth/OAuthLogoutChallenge.java b/src/main/java/io/supertokens/pluginInterface/oauth/OAuthLogoutChallenge.java
new file mode 100644
index 00000000..1bed85ab
--- /dev/null
+++ b/src/main/java/io/supertokens/pluginInterface/oauth/OAuthLogoutChallenge.java
@@ -0,0 +1,19 @@
+package io.supertokens.pluginInterface.oauth;
+
+public class OAuthLogoutChallenge {
+    public final String challenge;
+    public final String clientId;
+    public final String postLogoutRedirectionUri;
+    public final String gid;
+    public final String state;
+    public final long timeCreated;
+
+    public OAuthLogoutChallenge(String challenge, String clientId, String postLogoutRedirectionUri, String gid, String state, long timeCreated) {
+        this.challenge = challenge;
+        this.clientId = clientId;
+        this.postLogoutRedirectionUri = postLogoutRedirectionUri;
+        this.gid = gid;
+        this.state = state;
+        this.timeCreated = timeCreated;
+    }
+}
diff --git a/src/main/java/io/supertokens/pluginInterface/oauth/OAuthStorage.java b/src/main/java/io/supertokens/pluginInterface/oauth/OAuthStorage.java
index 94cb5e78..a840034f 100644
--- a/src/main/java/io/supertokens/pluginInterface/oauth/OAuthStorage.java
+++ b/src/main/java/io/supertokens/pluginInterface/oauth/OAuthStorage.java
@@ -48,4 +48,12 @@ public boolean doesClientIdExistForApp(AppIdentifier appIdentifier, String clien
     public int countTotalNumberOfM2MTokensAlive(AppIdentifier appIdentifier) throws StorageQueryException;
 
     public void cleanUpExpiredAndRevokedTokens(AppIdentifier appIdentifier) throws StorageQueryException;
+
+    public void addLogoutChallenge(AppIdentifier appIdentifier, String challenge, String clientId, String postLogoutRedirectionUri, String state, long timeCreated) throws StorageQueryException;
+
+    public OAuthLogoutChallenge getLogoutChallenge(AppIdentifier appIdentifier, String challenge) throws StorageQueryException;
+
+    public void deleteLogoutChallenge(AppIdentifier appIdentifier, String challenge) throws StorageQueryException;
+
+    public void deleteLogoutChallengesBefore(AppIdentifier appIdentifier, long time) throws StorageQueryException;
 }