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Dialog creation and management for Microsoft Bot Framework Applications
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Microsoft Bot Framework Composer

Microsoft Bot Framework Composer [PREVIEW]

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Bot Framework Composer is an integrated development tool for developers and multi-disciplinary teams to build bots and conversational experiences with the Microsoft Bot Framework. Within this tool, you'll find everything you need to build a sophisticated conversational experience.

  • A visual editing canvas for conversation flows
  • In context editing for language understanding (NLU)
  • Tools to train, test and manage language understanding (NLU) and QnA components
  • Language generation and templating system
  • A ready-to-use bot runtime executable

The Bot Framework Composer is an open source tool based on the Bot Framework SDK.

Bot Framework Composer Home Page

Who should use this PREVIEW release?

  • This preview is for developers looking to build conversation applications using the latest Bot Framework SDK preview features like Adaptive Dialogs, Language Understanding and Language Generation.
  • Composer and the Bot Framework Adaptive Dialog are in-preview and should not be used for production deployments.
  • We designed Composer to be a web app to allow developers to extend Composer as well as embed it within their own solutions. The current version of Composer is a web app that runs locally. Future releases will enable Composer to run as a centralized hosted web application.

Get Started

To build and run the Composer project locally. From the Composer folder, run the following commands

$ cd Composer // switch to Composer folder
$ yarn install // install dependencies
$ yarn build // build extensions and libs
$ yarn startall // start client and server at the same time

Support and Feedback

Related project

The Bot Framework Composer is part of the Bot Framework platform:


This project welcomes contributions and suggestions. Most contributions require you to agree to a Contributor License Agreement (CLA) declaring that you have the right to, and actually do, grant us the rights to use your contribution. For details, visit

When you submit a pull request, a CLA-bot will automatically determine whether you need to provide a CLA and decorate the PR appropriately (e.g., label, comment). Simply follow the instructions provided by the bot. You will only need to do this once across all repos using our CLA.

This project has adopted the Microsoft Open Source Code of Conduct. For more information see the Code of Conduct FAQ or contact with any additional questions or comments.

Issues and feature requests

Please file issues and feature requests here.

Also, see current known issues for high impact bugs you may experience.

Submitting pull requests

If you'd like to contribute pull requests to Composer, see the contributing guide for helpful information on our development workflow.

Reporting security issues

Security issues and bugs should be reported privately, via email, to the Microsoft Security Response Center (MSRC) at You should receive a response within 24 hours. If for some reason you do not, please follow up via email to ensure we received your original message. Further information, including the MSRC PGP key, can be found in the Security TechCenter.

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