diff --git a/docs/vanilla.md b/docs/vanilla.md
index 9374c89..ac759b4 100644
--- a/docs/vanilla.md
+++ b/docs/vanilla.md
@@ -32,7 +32,6 @@ Use {@link vanilla.MakeCodeFrameDriver | MakeCodeFrameDriver} class to create a
 
 ```js
 import {
-  Project,
   MakeCodeFrameDriver,
   createMakeCodeURL,
 } from "@microbit/makecode-embed/vanilla";
diff --git a/src/react/MakeCodeBlocksRendering.tsx b/src/react/MakeCodeBlocksRendering.tsx
index ec20c0c..02319f3 100644
--- a/src/react/MakeCodeBlocksRendering.tsx
+++ b/src/react/MakeCodeBlocksRendering.tsx
@@ -4,11 +4,11 @@
  */
 import React, { useState, useEffect, ReactNode } from 'react';
 import { useMakeCodeRenderBlocksContext } from './MakeCodeRenderBlocksProvider.js';
-import { BlockLayout, Project } from '../vanilla/pxt.js';
+import { BlockLayout, MakeCodeProject } from '../vanilla/pxt.js';
 
 export interface MakeCodeBlocksRenderingProps {
   className?: string;
-  code?: string | Project;
+  code?: string | MakeCodeProject;
   packageId?: string;
   package?: string;
   snippetMode?: boolean;
diff --git a/src/react/MakeCodeFrame.tsx b/src/react/MakeCodeFrame.tsx
index fab7c4d..9f52aed 100644
--- a/src/react/MakeCodeFrame.tsx
+++ b/src/react/MakeCodeFrame.tsx
@@ -16,7 +16,7 @@ import {
   EditorMessageTutorialEventRequest,
   EditorWorkspaceSaveRequest,
   EditorWorkspaceSyncRequest,
-  Project,
+  MakeCodeProject,
   ProjectFilters,
 } from '../vanilla/pxt.js';
 
@@ -38,7 +38,7 @@ export interface MakeCodeFrameProps
   // https://github.com/microsoft/pxt-microbit/blob/master/pxtarget.json#L605C6-L605C14
   queryParams?: Record<string, string>;
 
-  initialProjects: () => Promise<Project[]>;
+  initialProjects: () => Promise<MakeCodeProject[]>;
 
   controllerId?: string;
   filters?: ProjectFilters;
diff --git a/src/react/index.ts b/src/react/index.ts
index be05503..4581050 100644
--- a/src/react/index.ts
+++ b/src/react/index.ts
@@ -42,7 +42,7 @@ export type {
   ImportProjectOptions,
   InfoMessage,
   LanguageRestriction,
-  Project,
+  MakeCodeProject,
   ProjectCreationOptions,
   ProjectFilters,
   RenderBlocksOptions,
diff --git a/src/stories/MakeCodeToolbar.tsx b/src/stories/MakeCodeToolbar.tsx
index 421b3c9..703ca5c 100644
--- a/src/stories/MakeCodeToolbar.tsx
+++ b/src/stories/MakeCodeToolbar.tsx
@@ -1,7 +1,7 @@
 import { MutableRefObject, RefObject } from 'react';
 import { MakeCodeFrameDriver } from '../vanilla/makecode-frame-driver.js';
 import { defaultMakeCodeProject } from '../vanilla/examples.js';
-import { Project } from '../vanilla/pxt.js';
+import { MakeCodeProject } from '../vanilla/pxt.js';
 
 const toolbarRowStyle = {
   fontFamily: 'sans-serif',
@@ -16,7 +16,7 @@ const MakeCodeToolbar = ({
   savedProjects,
 }: {
   driver: RefObject<MakeCodeFrameDriver>;
-  savedProjects: MutableRefObject<Map<string, Project>>;
+  savedProjects: MutableRefObject<Map<string, MakeCodeProject>>;
 }) => {
   return (
     <div style={{ display: 'flex', flexDirection: 'column' }}>
diff --git a/src/stories/fixtures.ts b/src/stories/fixtures.ts
index aea6897..8dd8816 100644
--- a/src/stories/fixtures.ts
+++ b/src/stories/fixtures.ts
@@ -1,4 +1,4 @@
-import { Project } from '../vanilla/pxt.js';
+import { MakeCodeProject } from '../vanilla/pxt.js';
 
 export const project = {
   text: {
@@ -9,7 +9,7 @@ export const project = {
     'pxt.json':
       '{\n    "name": "Untitled",\n    "dependencies": {\n        "core": "*"\n , "radio": "*"\n   },\n    "description": "",\n    "files": [\n        "main.blocks",\n        "main.ts",\n        "README.md"\n    ]\n}',
   },
-} as Project;
+} as MakeCodeProject;
 
 export const projectWithLayout = {
   text: {
@@ -63,9 +63,9 @@ export const projectWithLayout = {
     </block>
   </xml>`,
   },
-} as Project;
+} as MakeCodeProject;
 
-export const projectWithExtensionBlock: Project = {
+export const projectWithExtensionBlock: MakeCodeProject = {
   text: {
     'README.md': '',
     'main.blocks':
@@ -136,7 +136,7 @@ export const initialProject = {
   },
 };
 
-export const projectWithCustomBlock: Project = {
+export const projectWithCustomBlock: MakeCodeProject = {
   text: {
     'README.md': '',
     'custom.ts':
@@ -149,7 +149,7 @@ export const projectWithCustomBlock: Project = {
   },
 };
 
-export const projectWithUserLayout: Project = {
+export const projectWithUserLayout: MakeCodeProject = {
   text: {
     'README.md': '',
     'main.blocks':
diff --git a/src/stories/react/MakeCodeBlocksRendering.stories.tsx b/src/stories/react/MakeCodeBlocksRendering.stories.tsx
index 90c2a63..a094459 100644
--- a/src/stories/react/MakeCodeBlocksRendering.stories.tsx
+++ b/src/stories/react/MakeCodeBlocksRendering.stories.tsx
@@ -2,7 +2,7 @@ import { Meta, StoryObj } from '@storybook/react';
 import { ReactNode, useState } from 'react';
 import MakeCodeBlocksRendering from '../../react/MakeCodeBlocksRendering.js';
 import { MakeCodeRenderBlocksProvider } from '../../react/MakeCodeRenderBlocksProvider.js';
-import { BlockLayout, Project } from '../../vanilla/pxt.js';
+import { BlockLayout, MakeCodeProject } from '../../vanilla/pxt.js';
 import {
   initialProject,
   project,
@@ -190,7 +190,7 @@ export const Robust: Story = {
     return (
       <StoryWrapper key={version}>
         <MakeCodeRenderBlocksProvider version={adaptStorybookVersion(version)}>
-          <MakeCodeBlocksRendering code={{} as Project} />
+          <MakeCodeBlocksRendering code={{} as MakeCodeProject} />
         </MakeCodeRenderBlocksProvider>
       </StoryWrapper>
     );
@@ -229,7 +229,7 @@ export const EmptyToBlocksTransition: Story = {
   name: 'Empty to blocks transition',
   render: (args) => {
     const { version } = args;
-    const [project, setProject] = useState<Project>(initialProject);
+    const [project, setProject] = useState<MakeCodeProject>(initialProject);
     return (
       <StoryWrapper key={version}>
         <div style={{ display: 'grid', gridTemplateColumns: '50% 50%' }}>
diff --git a/src/stories/react/MakeCodeFrame.stories.tsx b/src/stories/react/MakeCodeFrame.stories.tsx
index 627337c..e41b196 100644
--- a/src/stories/react/MakeCodeFrame.stories.tsx
+++ b/src/stories/react/MakeCodeFrame.stories.tsx
@@ -6,7 +6,7 @@ import {
   default as MakeCodeFrame,
   MakeCodeFrameProps,
 } from '../../react/MakeCodeFrame.js';
-import { Project } from '../../vanilla/pxt.js';
+import { MakeCodeProject } from '../../vanilla/pxt.js';
 import { controllerId } from '../config.js';
 import StoryWrapper from '../StoryWrapper.js';
 import MakeCodeToolbar from '../MakeCodeToolbar.js';
@@ -30,7 +30,7 @@ type Story = StoryObj<typeof MakeCodeFrame>;
 const MakeCodeEditorWithControls = (
   props: Omit<MakeCodeFrameProps, 'initialProjects'>
 ) => {
-  const savedProjects = useRef<Map<string, Project>>(new Map());
+  const savedProjects = useRef<Map<string, MakeCodeProject>>(new Map());
   const ref = useRef<MakeCodeFrameDriver>(null);
   const initialProjects = useCallback(async () => {
     if (savedProjects.current.size === 0) {
diff --git a/src/stories/vanilla/makecode-frame-driver.stories.tsx b/src/stories/vanilla/makecode-frame-driver.stories.tsx
index e1b4b69..1dac623 100644
--- a/src/stories/vanilla/makecode-frame-driver.stories.tsx
+++ b/src/stories/vanilla/makecode-frame-driver.stories.tsx
@@ -6,7 +6,7 @@ import {
   MakeCodeFrameDriver,
   Options,
 } from '../../vanilla/makecode-frame-driver.js';
-import { Project } from '../../vanilla/pxt.js';
+import { MakeCodeProject } from '../../vanilla/pxt.js';
 import MakeCodeToolbar from '../MakeCodeToolbar.js';
 import StoryWrapper from '../StoryWrapper.js';
 
@@ -17,7 +17,7 @@ interface StoryArgs {
     controller?: 1 | 2;
     queryParams?: Record<string, string>;
   };
-  project?: Project;
+  project?: MakeCodeProject;
   callbacks?: Partial<Options>;
 }
 
@@ -30,7 +30,7 @@ export default meta;
 type Story = StoryObj<StoryArgs>;
 
 const renderEditor = (args: StoryArgs) => {
-  const savedProjects = useRef<Map<string, Project>>(new Map());
+  const savedProjects = useRef<Map<string, MakeCodeProject>>(new Map());
   const ref = useRef<MakeCodeFrameDriver | null>(null);
   const cbRef = (div: HTMLElement | null) => {
     if (!div) {
@@ -50,7 +50,7 @@ const renderEditor = (args: StoryArgs) => {
     iframe.height = '100%';
     div.appendChild(iframe);
 
-    const savedProjects: Map<string, Project> = new Map();
+    const savedProjects: Map<string, MakeCodeProject> = new Map();
 
     // Create and initialise an instance of MakeCodeFrameDriver.
     ref.current = new MakeCodeFrameDriver(
diff --git a/src/stories/vanilla/makecode-render-blocks.stories.tsx b/src/stories/vanilla/makecode-render-blocks.stories.tsx
index ef0ba12..03bdd54 100644
--- a/src/stories/vanilla/makecode-render-blocks.stories.tsx
+++ b/src/stories/vanilla/makecode-render-blocks.stories.tsx
@@ -13,12 +13,12 @@ import {
   projectWithMelody,
   projectWithTwoExtensions,
 } from '../fixtures.js';
-import { Project } from '../../vanilla/pxt.js';
+import { MakeCodeProject } from '../../vanilla/pxt.js';
 import StoryWrapper from '../StoryWrapper.js';
 
 interface StoryArgs {
   options: MakeCodeRenderBlocksOptions | undefined;
-  project: Project;
+  project: MakeCodeProject;
 }
 
 const meta: Meta<StoryArgs> = {
diff --git a/src/vanilla/examples.ts b/src/vanilla/examples.ts
index 0bb4216..9f5bf1d 100644
--- a/src/vanilla/examples.ts
+++ b/src/vanilla/examples.ts
@@ -1,6 +1,6 @@
-import { Project } from './pxt.js';
+import { MakeCodeProject } from './pxt.js';
 
-export const defaultMakeCodeProject: Project = {
+export const defaultMakeCodeProject: MakeCodeProject = {
   text: {
     'main.blocks':
       '<xml xmlns="http://www.w3.org/1999/xhtml">\n  <block type="pxt-on-start" id=",{,HjW]u:lVGcDRS_Cu|" x="-247" y="113"></block>\n</xml>',
@@ -11,7 +11,7 @@ export const defaultMakeCodeProject: Project = {
   },
 };
 
-export const emptyMakeCodeProject: Project = {
+export const emptyMakeCodeProject: MakeCodeProject = {
   text: {
     'main.blocks':
       '<xml xmlns="http://www.w3.org/1999/xhtml">\n  <variables></variables>\n</xml>',
diff --git a/src/vanilla/index.ts b/src/vanilla/index.ts
index 3a689ec..588d0bb 100644
--- a/src/vanilla/index.ts
+++ b/src/vanilla/index.ts
@@ -38,7 +38,7 @@ export type {
   LanguageRestriction,
   PackageConfig,
   PackageExtension,
-  Project,
+  MakeCodeProject,
   ProjectCreationOptions,
   ProjectFilters,
   ProjectTemplate,
diff --git a/src/vanilla/makecode-frame-driver.ts b/src/vanilla/makecode-frame-driver.ts
index 1358ffe..6fd7e57 100644
--- a/src/vanilla/makecode-frame-driver.ts
+++ b/src/vanilla/makecode-frame-driver.ts
@@ -29,7 +29,7 @@ import {
   ImportProjectOptions,
   InfoMessage,
   LanguageRestriction,
-  Project,
+  MakeCodeProject,
   ProjectCreationOptions,
   ProjectFilters,
   RenderBlocksOptions,
@@ -64,7 +64,7 @@ export interface Options {
    * The projects will receive updates via `onWorkspaceSave` and should be stored keyed by header
    * id.
    */
-  initialProjects: () => Promise<Project[]>;
+  initialProjects: () => Promise<MakeCodeProject[]>;
 
   /**
    * Set this to a value representing your app.
diff --git a/src/vanilla/makecode-render-blocks.ts b/src/vanilla/makecode-render-blocks.ts
index de9fd83..a868694 100644
--- a/src/vanilla/makecode-render-blocks.ts
+++ b/src/vanilla/makecode-render-blocks.ts
@@ -2,7 +2,7 @@
  * MakeCode handling that does not depend on React.
  */
 
-import { BlockLayout, Project } from './pxt.js';
+import { BlockLayout, MakeCodeProject } from './pxt.js';
 
 const disposedMessage = 'Disposed';
 const makecodeFailedToLoadMessage = 'Failed to load MakeCode to render blocks.';
@@ -22,7 +22,7 @@ export interface MakeCodeRenderBlocksReturn {
 }
 
 export interface RenderBlocksRequest {
-  code: string | Project;
+  code: string | MakeCodeProject;
   options?: {
     packageId?: string;
     package?: string;
@@ -68,7 +68,7 @@ interface RenderBlocksResponseMessage {
 type RequestInputType = 'text' | 'blocks';
 
 interface RenderBlocksRequestResponse {
-  input: Project | string;
+  input: MakeCodeProject | string;
   sent: boolean;
   type: RequestInputType;
   req: RenderBlocksRequestMessage;
@@ -129,7 +129,7 @@ export const createMakeCodeRenderBlocks = (
   };
 
   const findBestCode = (
-    code: string | Project,
+    code: string | MakeCodeProject,
     ignoreBlocks?: boolean
   ): { type: RequestInputType; code: string } => {
     if (typeof code === 'string') {
diff --git a/src/vanilla/pxt.ts b/src/vanilla/pxt.ts
index 0f0183d..93953d2 100644
--- a/src/vanilla/pxt.ts
+++ b/src/vanilla/pxt.ts
@@ -86,7 +86,7 @@ export interface Header extends InstallHeader {
 
 export type ScriptText = Record<string, string>;
 
-export interface Project {
+export interface MakeCodeProject {
   header?: Header;
   text?: ScriptText;
 }
@@ -333,7 +333,7 @@ export interface EditorWorkspaceSyncResponse extends EditorMessageResponse {
   /*
    * Full list of project, required for init
    */
-  projects: Project[];
+  projects: MakeCodeProject[];
   // (optional) filtering argument
   editor?: EditorSyncState;
   // (optional) controller id, used for determining what the parent controller is
@@ -345,12 +345,12 @@ export interface EditorWorkspaceSaveRequest extends EditorMessageRequest {
   /*
    * Modified project
    */
-  project: Project;
+  project: MakeCodeProject;
 }
 
 export interface ImportProjectOptions {
   // project to load
-  project: Project;
+  project: MakeCodeProject;
   // (optional) filtering argument
   filters?: ProjectFilters;
   searchBar?: boolean;
@@ -364,7 +364,7 @@ export interface EditorMessageImportProjectRequest
 
 export interface ImportExternalProjectOptions {
   // project to load
-  project: Project;
+  project: MakeCodeProject;
 }
 
 export interface EditorMessageImportExternalProjectRequest