diff --git a/what-changed/model/server.go b/what-changed/model/server.go
new file mode 100644
index 0000000..805636a
--- /dev/null
+++ b/what-changed/model/server.go
@@ -0,0 +1,67 @@
+// Copyright 2022 Princess B33f Heavy Industries / Dave Shanley
+// SPDX-License-Identifier: MIT
+
+package model
+
+import (
+    "github.com/pb33f/libopenapi/datamodel/low"
+    "github.com/pb33f/libopenapi/datamodel/low/v3"
+)
+
+type ServerChanges struct {
+    PropertyChanges
+    ServerVariableChanges map[string]*ServerVariableChanges
+}
+
+func (s *ServerChanges) TotalChanges() int {
+    c := s.PropertyChanges.TotalChanges()
+    for k := range s.ServerVariableChanges {
+        c += s.ServerVariableChanges[k].TotalChanges()
+    }
+    return c
+}
+
+func (s *ServerChanges) TotalBreakingChanges() int {
+    c := s.PropertyChanges.TotalBreakingChanges()
+    for k := range s.ServerVariableChanges {
+        c += s.ServerVariableChanges[k].TotalBreakingChanges()
+    }
+    return c
+}
+
+func CompareServers(l, r *v3.Server) *ServerChanges {
+    if low.AreEqual(l, r) {
+        return nil
+    }
+    var changes []*Change
+    var props []*PropertyCheck
+
+    // URL
+    props = append(props, &PropertyCheck{
+        LeftNode:  l.URL.ValueNode,
+        RightNode: r.URL.ValueNode,
+        Label:     v3.URLLabel,
+        Changes:   &changes,
+        Breaking:  true,
+        Original:  l,
+        New:       r,
+    })
+    // Description
+    props = append(props, &PropertyCheck{
+        LeftNode:  l.Description.ValueNode,
+        RightNode: r.Description.ValueNode,
+        Label:     v3.DescriptionLabel,
+        Changes:   &changes,
+        Breaking:  false,
+        Original:  l,
+        New:       r,
+    })
+
+    CheckProperties(props)
+    sc := new(ServerChanges)
+    sc.Changes = changes
+    sc.ServerVariableChanges = CheckMapForChanges(l.Variables.Value, r.Variables.Value,
+        &changes, v3.VariablesLabel, CompareServerVariables)
+
+    return sc
+}
diff --git a/what-changed/model/server_test.go b/what-changed/model/server_test.go
new file mode 100644
index 0000000..68d5b4f
--- /dev/null
+++ b/what-changed/model/server_test.go
@@ -0,0 +1,165 @@
+// Copyright 2022 Princess B33f Heavy Industries / Dave Shanley
+// SPDX-License-Identifier: MIT
+
+package model
+
+import (
+	"github.com/pb33f/libopenapi/datamodel/low"
+	v3 "github.com/pb33f/libopenapi/datamodel/low/v3"
+	"github.com/stretchr/testify/assert"
+	"gopkg.in/yaml.v3"
+	"testing"
+)
+
+func TestCompareServers(t *testing.T) {
+
+	left := `url: https://pb33f.io
+description: a server
+variables:
+  thing:
+    enum:
+      - choccy
+      - biccy
+    default: choccy`
+
+	right := `url: https://pb33f.io
+description: a server
+variables:
+  thing:
+    enum:
+      - choccy
+      - biccy
+    default: choccy`
+
+	var lNode, rNode yaml.Node
+	_ = yaml.Unmarshal([]byte(left), &lNode)
+	_ = yaml.Unmarshal([]byte(right), &rNode)
+
+	// create low level objects
+	var lDoc v3.Server
+	var rDoc v3.Server
+	_ = low.BuildModel(&lNode, &lDoc)
+	_ = low.BuildModel(&rNode, &rDoc)
+	_ = lDoc.Build(lNode.Content[0], nil)
+	_ = rDoc.Build(rNode.Content[0], nil)
+
+	// compare.
+	extChanges := CompareServers(&lDoc, &rDoc)
+	assert.Nil(t, extChanges)
+}
+
+func TestCompareServers_Modified(t *testing.T) {
+
+	left := `url: https://pb33f.io
+description: a server
+variables:
+  thing:
+    enum:
+      - choccy
+      - biccy
+    default: choccy`
+
+	right := `url: https://pb33f.io/hotness
+description: a server that is not
+variables:
+  thing:
+    enum:
+      - choccy
+      - biccy
+    default: biccy`
+
+	var lNode, rNode yaml.Node
+	_ = yaml.Unmarshal([]byte(left), &lNode)
+	_ = yaml.Unmarshal([]byte(right), &rNode)
+
+	// create low level objects
+	var lDoc v3.Server
+	var rDoc v3.Server
+	_ = low.BuildModel(&lNode, &lDoc)
+	_ = low.BuildModel(&rNode, &rDoc)
+	_ = lDoc.Build(lNode.Content[0], nil)
+	_ = rDoc.Build(rNode.Content[0], nil)
+
+	// compare.
+	extChanges := CompareServers(&lDoc, &rDoc)
+	assert.Equal(t, 3, extChanges.TotalChanges())
+	assert.Equal(t, 2, extChanges.TotalBreakingChanges())
+}
+
+func TestCompareServers_Added(t *testing.T) {
+	left := `url: https://pb33f.io
+variables:
+  thing:
+    enum:
+      - choccy
+      - biccy
+    default: choccy`
+
+	right := `url: https://pb33f.io
+description: a server
+variables:
+  thing:
+    enum:
+      - choccy
+      - biccy
+      - tea
+    default: choccy`
+
+	var lNode, rNode yaml.Node
+	_ = yaml.Unmarshal([]byte(left), &lNode)
+	_ = yaml.Unmarshal([]byte(right), &rNode)
+
+	// create low level objects
+	var lDoc v3.Server
+	var rDoc v3.Server
+	_ = low.BuildModel(&lNode, &lDoc)
+	_ = low.BuildModel(&rNode, &rDoc)
+	_ = lDoc.Build(lNode.Content[0], nil)
+	_ = rDoc.Build(rNode.Content[0], nil)
+
+	// compare.
+	extChanges := CompareServers(&lDoc, &rDoc)
+	assert.Equal(t, 2, extChanges.TotalChanges())
+	assert.Equal(t, 0, extChanges.TotalBreakingChanges())
+	assert.Equal(t, PropertyAdded, extChanges.Changes[0].ChangeType)
+	assert.Equal(t, ObjectAdded, extChanges.ServerVariableChanges["thing"].Changes[0].ChangeType)
+}
+
+func TestCompareServers_Removed(t *testing.T) {
+	left := `url: https://pb33f.io
+variables:
+  thing:
+    enum:
+      - choccy
+      - biccy
+    default: choccy`
+
+	right := `url: https://pb33f.io
+description: a server
+variables:
+  thing:
+    enum:
+      - choccy
+      - biccy
+      - tea
+    default: choccy`
+
+	var lNode, rNode yaml.Node
+	_ = yaml.Unmarshal([]byte(left), &lNode)
+	_ = yaml.Unmarshal([]byte(right), &rNode)
+
+	// create low level objects
+	var lDoc v3.Server
+	var rDoc v3.Server
+	_ = low.BuildModel(&lNode, &lDoc)
+	_ = low.BuildModel(&rNode, &rDoc)
+	_ = lDoc.Build(lNode.Content[0], nil)
+	_ = rDoc.Build(rNode.Content[0], nil)
+
+	// compare.
+	extChanges := CompareServers(&rDoc, &lDoc)
+	assert.Equal(t, 2, extChanges.TotalChanges())
+	assert.Equal(t, 1, extChanges.TotalBreakingChanges())
+	assert.Equal(t, PropertyRemoved, extChanges.Changes[0].ChangeType)
+	assert.Equal(t, ObjectRemoved, extChanges.ServerVariableChanges["thing"].Changes[0].ChangeType)
+}
diff --git a/what-changed/model/server_variable_test.go b/what-changed/model/server_variable_test.go
index da55fc4..e6b46f0 100644
--- a/what-changed/model/server_variable_test.go
+++ b/what-changed/model/server_variable_test.go
@@ -106,12 +106,12 @@ enum:
 func TestCompareServerVariables_Added(t *testing.T) {
 
 	left := `description: hi
-default: hello
 enum:
   - one
   - two`
 
-	right := `description: hi
+	right := `default: hello
+description: hi
 enum:
   - one
   - two`