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Explore the app manifest structure and the package of a SharePoint Add-in

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Important

The SharePoint Add-In model in SharePoint Online has been deprecated as of November 27th 2023, checkout the full retirement announcement to learn more.

Deprecation means that the feature will not get any new investments, but it's still supported. SharePoint add-in model is retired fully on April 2nd, 2026 and is no longer available after that time. Primary replacement technology for the SharePoint add-in model is SharePoint Framework (SPFx) which continues to be supported also in future.

Add-in for SharePoint package structure

A SharePoint Add-in package is a file that has an ".app" extension and that complies with the Open Packaging Conventions (OPC). The package contains the following items:

  • Add-in manifest: This is a required file that is named appmanifest.xml. It tells SharePoint about some important properties of the add-in, such as its title and the permissions it needs to run. For more information about the contents of this file, see Add-in for SharePoint manifest file.

  • SharePoint solution packages: Optionally, the add-in may include a SharePoint solution package (.wsp file) that contains the components of the add-in web. These components may include pages, list instances, views, documents, web-scoped features, and other SharePoint components. (For more information about what SharePoint components can be included in a SharePoint Add-in, see Types of SharePoint components that can be in a SharePoint Add-in.) The .wsp file may also contain Office Add-ins. The components in the .wsp file are deployed to the add-in web. For an example of an add-in package that includes a SharePoint solution package, see Create a provider-hosted add-in that includes a custom SharePoint list and content type.

  • Host web features with Custom Actions or add-in parts: In addition to the SharePoint components that are deployed to the add-in web, a SharePoint Add-in can also deploy one or more custom actions (shortcut menu items or ribbon extensions) to the host web. This is accomplished by including in the add-in package a feature that is not inside the package's .wsp file and that deploys the components that go to the host web. This "loose" feature is called a host web feature.

    Add-in parts are deployed to the host web in the same way. The host web feature consists of a standard SharePoint feature.xml file and one or more associated elements.xml files. An elements.xml file for a custom action, for example, contains the CustomAction markup for the custom action. It can also include markup for add-in parts. Only these two kinds of components can be in the host web feature. These host web features are not itemized in the add-in manifest. However, they are "parts" in the OPC sense, and there is an explicit OPC relationship between the add-in manifest and each of these files. For an example of an add-in package that includes a host web feature, see Create custom actions to deploy with SharePoint Add-ins.

    Note

    Tenant administrators have the option to batch-install a SharePoint Add-in to multiple websites. An add-in that has been installed in this way is said to have Tenant scope. If the add-in has not been batch-installed, and is instead installed to each website separately, it has Web scope. If the host web feature includes ribbon extensions or add-in parts, they are not deployed to the host webs if the add-in is batch-installed, so only shortcut menu items are deployed with Tenant-scoped add-ins.

    Add-in scope should not be confused with feature scope. Feature scope determines where the elements in a feature are deployed. The possibilities are Farm, WebApplication, Site (that is, site collection), and Web. Only the Web option is permitted for features in SharePoint Add-ins (both host web features and features inside a .wsp in an add-in package).

    Add-in scope refers to the scope at which an add-in is installed. The possibilities are Web, in which case the add-in has been installed to one or more websites site-by-site, and Tenant, in which case the add-in has been batch installed to all or some subset of the websites in a customer's tenancy.

    For more information about Tenant and Web scope, see Tenancies and deployment scopes for SharePoint Add-ins.

  • Localization resource files (.resx): These are for localizing aspects of the add-in manifest that include the add-in title and aspects of host web features in the add-in package. (Individual parts of the add-in package that are inside their own package, such as .wsp files, Azure websites packages, and add-in manifests, each have their own localization processes that are applied exactly as they would be if the items in question were not part of a SharePoint Add-in.) For an example of an add-in package that includes .resx files for a host web feature, see Localize SharePoint Add-ins.

  • Office Add-ins manifests: Optionally, there may be one or more Office Add-ins manifests that each package an Office Add-in. This part can be included in the add-in package only if the add-in is going to be uploaded to a SharePoint corporate add-in catalog, not the public marketplace. For more information, see Publish SharePoint Add-ins.

Add-in for SharePoint manifest file

Every SharePoint Add-in includes an appmanifest.xml file. The appmanifest.xml tells SharePoint what it must know about the add-in and defines the add-in's most important properties. The following are some of the items that are specified in the manifest:

  • The internal name, product ID, and version of the add-in.

  • The URL of the start page, which is the page that opens when the add-in is started. This can be a page in the add-in web, a cloud-based page, or a page on a web server of the ISV.

    Note

    In certain circumstances, there may be restrictions on what type of file can be specified in the StartPage element. For details, see StartPage element (PropertiesDefinition complexType) (SharePoint Add-in Manifest). When you are combining more than one query parameter in the StartPage value, you must use the encoded ampersand & rather than & or a semi-colon to append them together.

  • Other properties of the add-in. These include title and the locales supported by the add-in (both are required), the URLs of services that handle the post-install, post-upgrade, and pre-uninstall events, and the web template to use when the add-in web is created.

  • Requests for permissions the add-in needs to SharePoint resources outside the add-in web.

  • An identification, for authentication and authorization purposes, of the add-in principal. It is this principal that is granted permissions. This is not required for a SharePoint-hosted add-in.

  • A list of the prerequisites, if any, that must be available to the add-in in order for the add-in to be installed. For example, certain features may need to be installed and activated, and certain services may need to be licensed and installed.

Note

The add-in manifest file is the only required item in the add-in package, but not all of the items in the previous list are required parts of the file.

For detailed information about the add-in manifest markup, see Schema reference for manifests of SharePoint Add-ins. This topic is not a substitute for the information in that node, including information about required elements and attributes. Also, note that SharePoint add-in manifests have a different schema from Office Add-in manifests. You can find information about the latter at Schema reference for Office Add-ins manifests (v1.1).

The following is an example of an appmanifest.xml file. Note that in this example, the start page for the add-in is an ASP.NET page that is on a remote server, not a page on the SharePoint site. The URL for the page includes a query string that passes to the remote web application the URL of the host web. The {HostUrl} part of the string is a token that is resolved when the add-in is launched. The add-in is requesting Write permission to all the lists in the host web. The add-in principal that must be granted this permission is the remote web application.

You must use either the SupportedLocales or the SupportedLanguages element in your add-in manifest. SupportedLanguages is being deprecated in favor of SupportedLocales. The SupportedLanguages element will continue to work even after release, but you should refrain from using it. For more information about these elements, see SupportedLocales element (PropertiesDefinition complexType) (SharePoint Add-in Manifest) and SupportedLanguages element (PropertiesDefinition complexType) (SharePoint Add-in Manifest).

Note

The values of the Scope attribute of the AppPermissionRequest element are structured like URIs, but they are actually literal strings. No part of the example Scope value in the following example is a placeholder. For more information about permissions, see Add-in permissions in SharePoint.

<?xml version="1.0" encoding="utf-8" ?>
<App xmlns="http://schemas.microsoft.com/sharepoint/2012/app/manifest"
     ProductID="{4a07f3bd-803d-45f2-a710-b9e944c3396e}"
     Version="1.0.0.0"
     SharePointMinVersion="15.0.0.0"
     Name="MySampleApp"
>
  <Properties>
    <Title>My Sample App</Title>
    <StartPage>http://MyRemoteWebApplicationServer/default.aspx/?SPHostUrl={HostUrl}</StartPage>
    <SupportedLocales>
      <SupportedLocale CultureName="en-US" />
    </SupportedLocales>        
  </Properties>

  <AppPermissionRequests>
    <AppPermissionRequest Scope="http://sharepoint/content/sitecollection/web/list" Right="Write"/>
  </AppPermissionRequests>

  <AppPrincipal>
    <RemoteWebApplication ClientId="1ee82b34-7c1b-471b-b27e-ff272accd564" />
  </AppPrincipal>
</App>

URL tokens in the add-in manifest

SharePoint provides several tokens that can be used in the StartPage element and other places in add-ins and components of add-ins to represent information that is not known until the add-in is run. The SharePoint infrastructure resolves these tokens. Some are used at the beginning of the URL and others can be used within a URL such as the value of a query parameter. These tokens and several others can also be used in a variety of SharePoint development contexts.

For detailed information about all the tokens and where they can be used, see URL strings and tokens in SharePoint Add-ins. For general information about other tokens and URLs in SharePoint, see URLs and tokens in SharePoint.

Note

These tokens are not used in the Scope attribute of an AppPermissionRequest element.

See also