diff --git a/agent/consul/catalog_endpoint.go b/agent/consul/catalog_endpoint.go
index c6997fa702..75adf6cfd6 100644
--- a/agent/consul/catalog_endpoint.go
+++ b/agent/consul/catalog_endpoint.go
@@ -28,7 +28,7 @@ func (c *Catalog) Register(args *structs.RegisterRequest, reply *struct{}) error
 	defer metrics.MeasureSince([]string{"catalog", "register"}, time.Now())
 
 	// Verify the args.
-	if args.Node == "" || args.Address == "" {
+	if args.Node == "" || (args.Address == "" && !args.SkipNodeUpdate) {
 		return fmt.Errorf("Must provide node and address")
 	}
 	if args.ID != "" {
diff --git a/agent/structs/structs.go b/agent/structs/structs.go
index ca6628d130..cf8961f8bc 100644
--- a/agent/structs/structs.go
+++ b/agent/structs/structs.go
@@ -482,6 +482,11 @@ type HealthCheck struct {
 	ServiceName string        // optional service name
 	ServiceTags []string      // optional service tags
 
+	HTTP     string `json:",omitempty"`
+	TCP      string `json:",omitempty"`
+	Interval string `json:",omitempty"`
+	Timeout  string `json:",omitempty"`
+
 	RaftIndex
 }
 
diff --git a/api/agent.go b/api/agent.go
index 533b245578..a53ab386eb 100644
--- a/api/agent.go
+++ b/api/agent.go
@@ -15,6 +15,10 @@ type AgentCheck struct {
 	Output      string
 	ServiceID   string
 	ServiceName string
+	HTTP        string
+	TCP         string
+	Interval    string
+	Timeout     string
 }
 
 // AgentService represents a service known to the agent
diff --git a/api/catalog.go b/api/catalog.go
index babfc9a1df..08da6e16ea 100644
--- a/api/catalog.go
+++ b/api/catalog.go
@@ -42,6 +42,7 @@ type CatalogRegistration struct {
 	Datacenter      string
 	Service         *AgentService
 	Check           *AgentCheck
+	SkipNodeUpdate  bool
 }
 
 type CatalogDeregistration struct {
diff --git a/api/health.go b/api/health.go
index 38c105fdb9..ebdd2a47d7 100644
--- a/api/health.go
+++ b/api/health.go
@@ -34,6 +34,11 @@ type HealthCheck struct {
 	ServiceID   string
 	ServiceName string
 	ServiceTags []string
+
+	HTTP     string
+	TCP      string
+	Interval string
+	Timeout  string
 }
 
 // HealthChecks is a collection of HealthCheck structs.