diff --git a/reapi/extra/amxmodx/scripting/include/reapi_reunion.inc b/reapi/extra/amxmodx/scripting/include/reapi_reunion.inc
index ea85bce..311f0c2 100644
--- a/reapi/extra/amxmodx/scripting/include/reapi_reunion.inc
+++ b/reapi/extra/amxmodx/scripting/include/reapi_reunion.inc
@@ -39,6 +39,18 @@ native REU_GetProtocol(const index);
 */
 native client_auth_type:REU_GetAuthtype(const index);
 
+/*
+* Get client authkey
+*
+* @param index  Client index
+* @param index  Buffer to copy the authkey
+* @param index  Maximum buffer size
+*
+* @return       Number of cells copied to buffer
+*
+*/
+native REU_GetAuthKey(const index, dest[], maxlen);
+
 /*
 * Check if the client is running RevEmu with limited user rights.
 *
diff --git a/reapi/src/natives/natives_reunion.cpp b/reapi/src/natives/natives_reunion.cpp
index 3437b4a..4dad578 100644
--- a/reapi/src/natives/natives_reunion.cpp
+++ b/reapi/src/natives/natives_reunion.cpp
@@ -36,6 +36,36 @@ cell AMX_NATIVE_CALL REU_GetAuthtype(AMX *amx, cell *params)
 	return g_ReunionApi->GetClientAuthtype(params[arg_index] - 1);
 }
 
+/*
+* Get client authkey
+*
+* @param index  Client index
+* @param index  Buffer to copy the authkey
+* @param index  Maximum buffer size
+*
+* @return       Number of cells copied to buffer
+*
+* native REU_GetAuthKey(const index, dest[], maxlen);
+*/
+cell AMX_NATIVE_CALL REU_GetAuthKey(AMX *amx, cell *params)
+{
+	enum args_e { arg_count, arg_index, arg_output, arg_maxlen };
+
+	CHECK_ISPLAYER(arg_index);
+
+	int clientId = params[arg_index] - 1;
+
+	char buffer[256];
+	size_t size = g_ReunionApi->GetClientAuthdata(clientId, buffer, sizeof buffer);
+	if (size <= 0)
+		return 0;
+
+	size_t numToCopy = min<size_t>(size, params[arg_maxlen]);
+	cell *dest = getAmxAddr(amx, params[arg_output]);
+	setAmxString(dest, buffer, numToCopy);
+	return numToCopy;
+}
+
 /*
 * Check if the client is running RevEmu with limited user rights.
 *
@@ -70,6 +100,7 @@ AMX_NATIVE_INFO Reunion_Natives[] =
 {
 	{ "REU_GetProtocol",                REU_GetProtocol                },
 	{ "REU_GetAuthtype",                REU_GetAuthtype                },
+	{ "REU_GetAuthKey",                 REU_GetAuthKey                 },
 	{ "REU_IsRevemuWithoutAdminRights", REU_IsRevemuWithoutAdminRights },
 
 	{ nullptr, nullptr }