diff --git a/connection-coordinator/schemas/common.yaml b/connection-coordinator/schemas/common.yaml
index 014ae16..8870440 100644
--- a/connection-coordinator/schemas/common.yaml
+++ b/connection-coordinator/schemas/common.yaml
@@ -38,3 +38,30 @@ Empty:
     A generic empty message that you can re-use to avoid defining duplicated
     empty messages in your APIs.
   type: object
+
+ConnectionType:
+  description: |-
+    Enum that describes the type of a connection.
+    CONNECTION_TYPE_STANDARD - Standard connections are ordinary customer
+      connections.
+    CONNECTION_TYPE_TEST - Test connections are reserved for provider
+      development teams to support testing and canary workflows. Test
+      connections may be provisioned at bandwidths below the minimum supported
+      size (e.g. 50 Mbps). Bandwidth consumed by test connections must not
+      count against interconnect or environment capacity totals. Partners may
+      enforce a small quota on the number of active test connections.
+    CONNECTION_TYPE_MONITORING - Monitoring connections are reserved for
+      active monitoring sessions between providers. Monitoring connections may
+      be provisioned at a small bandwidth and must not tally against
+      interconnect or environment capacity totals. The quota is 2 per
+      interconnect (not per environment), one created by each provider, to
+      enable monitoring across all underlying links from either side. A
+      monitoring connection may not have a customer resource or key associated
+      with it. The local provider may apply provider-specific routing behavior
+      to enable the agreed-upon monitoring for the remote provider; the exact
+      routing configuration is left to each provider.
+  enum:
+  - CONNECTION_TYPE_STANDARD
+  - CONNECTION_TYPE_TEST
+  - CONNECTION_TYPE_MONITORING
+  type: string
diff --git a/connection-coordinator/schemas/connection.yaml b/connection-coordinator/schemas/connection.yaml
index 8681898..c5fb755 100644
--- a/connection-coordinator/schemas/connection.yaml
+++ b/connection-coordinator/schemas/connection.yaml
@@ -67,6 +67,13 @@ Connection:
       - $ref: "#/EncodedKey"
       - $ref: "#/SourceConnectionName"
       type: object
+    connectionType:
+      allOf:
+      - $ref: "common.yaml#/ConnectionType"
+      description: |-
+        Optional. The type of connection being created. Defaults to
+        CONNECTION_TYPE_STANDARD if not specified.
+      default: CONNECTION_TYPE_STANDARD
   type: object
   
 FeatureGuidance: