diff --git a/defaults/main.yml b/defaults/main.yml
index 53ffc92..4bb7579 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -89,6 +89,26 @@ checkmk_server__prerequisite_packages: [ 'apache2' ]
 checkmk_server__site: 'debops'
 
 
+# .. envvar:: checkmk_server__hostname
+#
+# Set Check_MK server DNS hostname (e.g. for agent download, API calls, ...).
+checkmk_server__hostname: '{{ ansible_fqdn }}'
+
+
+# .. envvar:: checkmk_server__site_url
+#
+# Check_MK server site URL.
+checkmk_server__site_url: '{{ ("https://" if checkmk_server__pki else "http://") +
+                               checkmk_server__hostname + "/" +
+                               checkmk_server__site }}'
+
+
+# .. envvar:: checkmk_server__webapi_url
+#
+# WebAPI URL of monitoring site.
+checkmk_server__webapi_url: '{{ checkmk_server__site_url + "/check_mk/webapi.py" }}'
+
+
 # .. envvar:: checkmk_server__runtime_config
 #
 # Check_MK site runtime configuration (``omd config``). Changing
diff --git a/tasks/site.yml b/tasks/site.yml
index 238ca54..775c7be 100644
--- a/tasks/site.yml
+++ b/tasks/site.yml
@@ -125,7 +125,7 @@
 - name: Read SSH public key
   command: 'cat {{ checkmk_server__site_home }}/.ssh/id_rsa.pub'
   changed_when: False
-  register: checkmk_server_register_ssh_pubkey
+  register: checkmk_server__register_ssh_public_key
   when: checkmk_server__sshkeys|d()
 
 - name: Wait for the site to be started
diff --git a/templates/etc/ansible/facts.d/checkmk_server.fact.j2 b/templates/etc/ansible/facts.d/checkmk_server.fact.j2
index 238d75b..531d3c8 100644
--- a/templates/etc/ansible/facts.d/checkmk_server.fact.j2
+++ b/templates/etc/ansible/facts.d/checkmk_server.fact.j2
@@ -1,3 +1,8 @@
-{
-"ssh_publickey": "{{ checkmk_server_register_ssh_pubkey.stdout }}"
-}
+{% set _site_facts = {} %}
+{% set _ = _site_facts.update({checkmk_server__site: {"version": checkmk_server__version_label}}) %}
+{% set _ = _site_facts[checkmk_server__site].update({"site_url": checkmk_server__site_url}) %}
+{% set _ = _site_facts[checkmk_server__site].update({"webapi_url": checkmk_server__webapi_url}) %}
+{% if checkmk_server__register_ssh_public_key.stdout|d() %}
+{%   set _ = _site_facts[checkmk_server__site].update({"ssh_public_key": checkmk_server__register_ssh_public_key.stdout}) %}
+{% endif %}
+{{ _site_facts | to_nice_json }}