diff --git a/scripts-available/CDB_FederatedServerDiagnostics.sql b/scripts-available/CDB_FederatedServerDiagnostics.sql
new file mode 100644
index 0000000..7b16263
--- /dev/null
+++ b/scripts-available/CDB_FederatedServerDiagnostics.sql
@@ -0,0 +1,12 @@
+--------------------------------------------------------------------------------
+-- Public functions
+--------------------------------------------------------------------------------
+
+CREATE OR REPLACE FUNCTION @extschema@.CDB_Federated_Server_Diagnostics(server TEXT)
+RETURNS json -- TODO decide if json or jsonb
+AS $$
+BEGIN
+    RETURN '{}'::json;
+END
+$$
+LANGUAGE PLPGSQL VOLATILE PARALLEL UNSAFE;
diff --git a/scripts-enabled/403-CDB_FederatedServerDiagnostics.sql b/scripts-enabled/403-CDB_FederatedServerDiagnostics.sql
new file mode 120000
index 0000000..edab4d4
--- /dev/null
+++ b/scripts-enabled/403-CDB_FederatedServerDiagnostics.sql
@@ -0,0 +1 @@
+../scripts-available/CDB_FederatedServerDiagnostics.sql
\ No newline at end of file
diff --git a/test/CDB_FederatedServerDiagnostics.sql b/test/CDB_FederatedServerDiagnostics.sql
new file mode 100644
index 0000000..d0af580
--- /dev/null
+++ b/test/CDB_FederatedServerDiagnostics.sql
@@ -0,0 +1,2 @@
+\echo '%% It raises an error if the server does not exist'
+SELECT '1.1', cartodb.CDB_Federated_Server_Diagnostics(server => 'doesNotExist');
diff --git a/test/CDB_FederatedServerDiagnostics_expect b/test/CDB_FederatedServerDiagnostics_expect
new file mode 100644
index 0000000..ea8ac49
--- /dev/null
+++ b/test/CDB_FederatedServerDiagnostics_expect
@@ -0,0 +1,2 @@
+%% It raises an error if the server does not exist
+1.1|{}