diff --git a/plugins/doc_fragments/attributes.py b/plugins/doc_fragments/attributes.py
index 3b084d8..44b76d1 100644
--- a/plugins/doc_fragments/attributes.py
+++ b/plugins/doc_fragments/attributes.py
@@ -18,6 +18,20 @@ class ModuleDocFragment(object):
     description: Can run in C(check_mode) and return changed status prediction without modifying target.
   diff_mode:
     description: Will return details on what has changed (or possibly needs changing in C(check_mode)), when in diff mode.
+  idempotent:
+    description:
+      - When run twice in a row outside check mode, with the same arguments, the second invocation indicates no change.
+      - This assumes that the system controlled/queried by the module has not changed in a relevant way.
+"""
+
+    # Should be used together with the standard fragment
+    IDEMPOTENT_NOT_MODIFY_STATE = r"""
+options: {}
+attributes:
+  idempotent:
+    support: full
+    details:
+      - This action does not modify state.
 """
 
     # Should be used together with the standard fragment
diff --git a/plugins/modules/boot.py b/plugins/modules/boot.py
index dcc54a5..779ce8b 100644
--- a/plugins/modules/boot.py
+++ b/plugins/modules/boot.py
@@ -34,6 +34,8 @@
     support: full
   diff_mode:
     support: none
+  idempotent:
+    support: full
 
 options:
   server_number:
diff --git a/plugins/modules/failover_ip.py b/plugins/modules/failover_ip.py
index e422423..996c7ce 100644
--- a/plugins/modules/failover_ip.py
+++ b/plugins/modules/failover_ip.py
@@ -34,6 +34,8 @@
     support: full
   diff_mode:
     support: full
+  idempotent:
+    support: full
 
 options:
   failover_ip:
diff --git a/plugins/modules/failover_ip_info.py b/plugins/modules/failover_ip_info.py
index 817e51d..2620b49 100644
--- a/plugins/modules/failover_ip_info.py
+++ b/plugins/modules/failover_ip_info.py
@@ -26,6 +26,7 @@
   - community.hrobot.robot
   - community.hrobot.attributes
   - community.hrobot.attributes.actiongroup_robot
+  - community.hrobot.attributes.idempotent_not_modify_state
   - community.hrobot.attributes.info_module
 
 attributes:
diff --git a/plugins/modules/firewall.py b/plugins/modules/firewall.py
index 0bc637b..cc66e1f 100644
--- a/plugins/modules/firewall.py
+++ b/plugins/modules/firewall.py
@@ -38,6 +38,8 @@
     support: full
   diff_mode:
     support: full
+  idempotent:
+    support: full
 
 options:
   server_ip:
diff --git a/plugins/modules/firewall_info.py b/plugins/modules/firewall_info.py
index eddb50a..463a17e 100644
--- a/plugins/modules/firewall_info.py
+++ b/plugins/modules/firewall_info.py
@@ -26,6 +26,7 @@
   - community.hrobot.robot
   - community.hrobot.attributes
   - community.hrobot.attributes.actiongroup_robot
+  - community.hrobot.attributes.idempotent_not_modify_state
   - community.hrobot.attributes.info_module
 
 attributes:
diff --git a/plugins/modules/reset.py b/plugins/modules/reset.py
index 9c2439a..05f01ed 100644
--- a/plugins/modules/reset.py
+++ b/plugins/modules/reset.py
@@ -29,6 +29,10 @@
     support: full
   diff_mode:
     support: none
+  idempotent:
+    support: none
+    details:
+      - This module performs an action on every invocation.
 
 options:
   server_number:
diff --git a/plugins/modules/reverse_dns.py b/plugins/modules/reverse_dns.py
index 14cc695..bfecdb2 100644
--- a/plugins/modules/reverse_dns.py
+++ b/plugins/modules/reverse_dns.py
@@ -32,6 +32,8 @@
     support: full
   diff_mode:
     support: none
+  idempotent:
+    support: full
 
 options:
   ip:
diff --git a/plugins/modules/server.py b/plugins/modules/server.py
index 3eb6f77..6ada7d9 100644
--- a/plugins/modules/server.py
+++ b/plugins/modules/server.py
@@ -30,6 +30,8 @@
     support: full
   diff_mode:
     support: none
+  idempotent:
+    support: full
 
 options:
   server_number:
diff --git a/plugins/modules/server_info.py b/plugins/modules/server_info.py
index ce2fcba..a1a49ce 100644
--- a/plugins/modules/server_info.py
+++ b/plugins/modules/server_info.py
@@ -21,6 +21,7 @@
   - community.hrobot.robot
   - community.hrobot.attributes
   - community.hrobot.attributes.actiongroup_robot
+  - community.hrobot.attributes.idempotent_not_modify_state
   - community.hrobot.attributes.info_module
 
 attributes:
diff --git a/plugins/modules/ssh_key.py b/plugins/modules/ssh_key.py
index 1767a90..e2e8bd8 100644
--- a/plugins/modules/ssh_key.py
+++ b/plugins/modules/ssh_key.py
@@ -32,6 +32,8 @@
     support: full
   diff_mode:
     support: none
+  idempotent:
+    support: full
 
 options:
   state:
diff --git a/plugins/modules/ssh_key_info.py b/plugins/modules/ssh_key_info.py
index 2baf20b..a7972ef 100644
--- a/plugins/modules/ssh_key_info.py
+++ b/plugins/modules/ssh_key_info.py
@@ -24,6 +24,7 @@
   - community.hrobot.robot
   - community.hrobot.attributes
   - community.hrobot.attributes.actiongroup_robot
+  - community.hrobot.attributes.idempotent_not_modify_state
   - community.hrobot.attributes.info_module
 attributes:
   action_group:
diff --git a/plugins/modules/v_switch.py b/plugins/modules/v_switch.py
index eb68e09..6e87531 100644
--- a/plugins/modules/v_switch.py
+++ b/plugins/modules/v_switch.py
@@ -32,6 +32,8 @@
     support: full
   diff_mode:
     support: none
+  idempotent:
+    support: full
 
 options:
   vlan: