diff --git a/libs/awcp/jex.eterms b/libs/awcp/jex.eterms
index ddebe0b..91e853b 100644
--- a/libs/awcp/jex.eterms
+++ b/libs/awcp/jex.eterms
@@ -1,5 +1,5 @@
 {type, library}.
 {realm, local}.
 {name, awcp}.
-{version, "0.1.0"}.
+{version, "0.2.0"}.
 {deps, []}.
diff --git a/libs/awcp/src/awcp.ts b/libs/awcp/src/awcp.ts
index 850a4d4..de4e94a 100644
--- a/libs/awcp/src/awcp.ts
+++ b/libs/awcp/src/awcp.ts
@@ -716,7 +716,14 @@ type EventData_W2A_tx_sign_noprop
 //----------------------------------------------------------------------------
 
 /**
- * Parameters for "transaction.sign" (do not propagate)
+ * Parameters for "message.sign"
+ *
+ * FIXME: example
+ *
+ * ```ts
+ * {message   : 'hello world',
+ *  onAccount : 'ak_...'}
+ * ```
  *
  * (layer 4)
  */
@@ -727,50 +734,50 @@ type Params_A2W_msg_sign
 
 
 /**
- * Success result type for "transaction.sign" (do not propagate)
+ * Success result type for "message.sign"
  *
  * (layer 4)
  */
-type Result_W2A_tx_sign_noprop
-    = {signedTransaction : string};
+type Result_W2A_msg_sign
+    = {signature : string};
 
 
 /**
- * Request type for "transaction.sign" (do not propagate)
+ * Request type for "message.sign" (do not propagate)
  *
  * (layer 3)
  */
-type RpcCall_A2W_tx_sign_noprop
-    = RpcCall<"transaction.sign",
-              Params_A2W_tx_sign_noprop>;
+type RpcCall_A2W_msg_sign
+    = RpcCall<"message.sign"
+              Params_A2W_msg_sign>;
 
 
 
 /**
- * Response type for "transaction.sign" (do not propagate)
+ * Response type for "message.sign" (do not propagate)
  *
  * (layer 3)
  */
-type RpcResp_W2A_tx_sign_noprop
-    = RpcResp<"transaction.sign",
-              Result_W2A_tx_sign_noprop>;
+type RpcResp_W2A_msg_sign
+    = RpcResp<"message.sign",
+              Result_W2A_msg_sign>;
 
 
 
 /**
- * Event data for aepp-to-waellet "transaction.sign" (do not propagate) message
+ * Event data for aepp-to-waellet "message.sign" (do not propagate) message
  *
  * (layer 2)
  */
-type EventData_A2W_tx_sign_noprop
-    = EventData_A2W<RpcCall_A2W_tx_sign_noprop>;
+type EventData_A2W_msg_sign
+    = EventData_A2W<RpcCall_A2W_msg_sign>;
 
 
 
 /**
- * Event data for aepp-to-waellet "transaction.sign" (do not propagate) response
+ * Event data for aepp-to-waellet "message.sign" (do not propagate) response
  *
  * (layer 2)
  */
-type EventData_W2A_tx_sign_noprop
-    = EventData_W2A<RpcResp_W2A_tx_sign_noprop>;
+type EventData_W2A_msg_sign
+    = EventData_W2A<RpcResp_W2A_msg_sign>;