API open specifications

The Office JavaScript API open specifications provide information about new JavaScript APIs that are being designed for Excel, Word, and other host applications. You can review the open specifications in branches of the OfficeDev/office-js-docs GitHub repository to learn about APIs that are planned for future releases and can provide feedback about the planned API features and design by logging issues in the GitHub repository.

Important

Features described in the API open specifications may be in various stages of development, such as early design or public preview, and are subject to change. When an API feature becomes generally available, related documentation is removed from the open specification and added to the Office Add-ins documentation.

New Excel JavaScript APIs

Join us in reviewing our design for new Excel JavaScript APIs.

See the Excel JavaScript open specification page to learn more and provide your feedback.

New Word JavaScript APIs

Join us in reviewing our design for new Word JavaScript APIs.

See the Word JavaScript open specification page to learn more and provide your feedback.