diff --git a/API.md b/API.md
index fff93ef2d7..8bef3c3889 100644
--- a/API.md
+++ b/API.md
@@ -71,9 +71,10 @@ Custom types may be registered via
 [`openmct.types`]{@link module:openmct.MCT#types}:
 
 ```
-openmct.types.addType('my-type', new openmct.Type({
+openmct.types.addType('my-type', {
     label: "My Type",
-    description: "This is a type that I added!"
+    description: "This is a type that I added!",
+    creatable: true
 });
 ```
 
diff --git a/src/MCT.js b/src/MCT.js
index c1b328b736..31cf0dbf47 100644
--- a/src/MCT.js
+++ b/src/MCT.js
@@ -248,6 +248,13 @@ define([
             }.bind(this)
         });
 
+        this.types.listKeys().forEach(function (typeKey) {
+            var type = this.types.get(typeKey);
+            var legacyDefinition = type.toLegacyDefinition();
+            legacyDefinition.key = typeKey;
+            this.legacyExtension('types', legacyDefinition);
+        }.bind(this));
+
         legacyRegistry.register('adapter', this.legacyBundle);
         legacyRegistry.enable('adapter');
         /**
diff --git a/src/api/api.js b/src/api/api.js
index f68460578b..c118e84ef7 100644
--- a/src/api/api.js
+++ b/src/api/api.js
@@ -21,7 +21,6 @@
  *****************************************************************************/
 
 define([
-    './Type',
     './TimeConductor',
     './objects/ObjectAPI',
     './composition/CompositionAPI',
@@ -30,7 +29,6 @@ define([
     './ui/GestureAPI',
     './telemetry/TelemetryAPI'
 ], function (
-    Type,
     TimeConductor,
     ObjectAPI,
     CompositionAPI,
@@ -40,7 +38,6 @@ define([
     TelemetryAPI
 ) {
     return {
-        Type: Type,
         TimeConductor: TimeConductor,
         ObjectAPI: ObjectAPI,
         CompositionAPI: CompositionAPI,
diff --git a/src/api/Type.js b/src/api/types/Type.js
similarity index 72%
rename from src/api/Type.js
rename to src/api/types/Type.js
index 717e417b21..c135972b31 100644
--- a/src/api/Type.js
+++ b/src/api/types/Type.js
@@ -21,21 +21,12 @@
  *****************************************************************************/
 
 define(function () {
-    /**
-     * @typedef TypeDefinition
-     * @memberof module:openmct.Type~
-     * @property {Metadata} metadata displayable metadata about this type
-     * @property {function (object)} [initialize] a function which initializes
-     *           the model for new domain objects of this type
-     * @property {boolean} [creatable] true if users should be allowed to
-     *           create this type (default: false)
-     */
 
     /**
      * A Type describes a kind of domain object that may appear or be
      * created within Open MCT.
      *
-     * @param {module:opemct.Type~TypeDefinition} definition
+     * @param {module:opemct.TypeRegistry~TypeDefinition} definition
      * @class Type
      * @memberof module:openmct
      */
@@ -55,5 +46,29 @@ define(function () {
         return domainObject.type === this.key;
     };
 
+    /**
+     * Get a definition for this type that can be registered using the
+     * legacy bundle format.
+     * @private
+     */
+    Type.prototype.toLegacyDefinition = function () {
+        var def = {};
+        def.name = this.definition.label;
+        def.cssclass = this.definition.cssclass;
+        def.description = this.definition.description;
+        def.properties = this.definition.form;
+
+        if (this.definition.initialize) {
+            def.model = {};
+            this.definition.initialize(def.model);
+        }
+
+        if (this.definition.creatable) {
+            def.features = ['creation'];
+        }
+
+        return def;
+    };
+
     return Type;
 });
diff --git a/src/api/types/TypeRegistry.js b/src/api/types/TypeRegistry.js
index e01bea4a9d..6a887850a2 100644
--- a/src/api/types/TypeRegistry.js
+++ b/src/api/types/TypeRegistry.js
@@ -20,7 +20,18 @@
  * at runtime from the About dialog for additional information.
  *****************************************************************************/
 
-define([], function () {
+define(['./Type'], function (Type) {
+    /**
+     * @typedef TypeDefinition
+     * @memberof module:openmct.TypeRegistry~
+     * @property {string} label the name for this type of object
+     * @property {string} description a longer-form description of this type
+     * @property {function (object)} [initialize] a function which initializes
+     *           the model for new domain objects of this type
+     * @property {boolean} [creatable] true if users should be allowed to
+     *           create this type (default: false)
+     * @property {string} [cssclass] the CSS class to apply for icons
+     */
 
     /**
      * A TypeRegistry maintains the definitions for different types
@@ -37,13 +48,33 @@ define([], function () {
      *
      * @param {string} typeKey a string identifier for this type
      * @param {module:openmct.Type} type the type to add
-     * @method addProvider
+     * @method addType
      * @memberof module:openmct.TypeRegistry#
      */
-    TypeRegistry.prototype.addType = function (typeKey, type) {
-        this.types[typeKey] = type;
+    TypeRegistry.prototype.addType = function (typeKey, typeDef) {
+        this.types[typeKey] = new Type(typeDef);
     };
 
+    /**
+     * List keys for all registered types.
+     * @method listKeys
+     * @memberof module:openmct.TypeRegistry#
+     * @returns {string[]} all registered type keys
+     */
+    TypeRegistry.prototype.listKeys = function () {
+        return Object.keys(this.types);
+    };
+
+    /**
+     * Retrieve a registered type by its key.
+     * @method get
+     * @param {string} typeKey the key for htis type
+     * @memberof module:openmct.TypeRegistry#
+     * @returns {module:openmct.Type} the registered type
+     */
+    TypeRegistry.prototype.get = function (typeKey) {
+        return this.types[typeKey];
+    };
 
     return TypeRegistry;
 });