Welcome to MMDAgent-EX! This site contains full documentation of MMDAgent-EX.

Privary remark and Terms of service are documents all users should read. Before you start, please take a look at them.

Go to the Getting Started section and follow the instruction for the first experience of MMDAgent-EX. The Playing Manual describes how to open a content and play with them.

If you want to edit or create your own content, first take a look at the System Overview, and learn the component of a dialogue content in the Content Overview page. The dialogue scenario is in a FST format, you can learn how to write scenario. More details of the file formats are described in File Formats section, including how to use PMX models in MMDAgent-EX.

You can make your content open on a Web site and let other people play with your content. See the How to Deploy pages how to do that.

When you want to do more for your content, the “Recipes” page contains hints for creating your content, including introduction of many MMDAgent-EX functions. Also MMDAgent-EX can connect to other services via network, so take a look at Networking page.

For reference, All Messages and All Options in mdf are listed in a page.

MMDAgent-EX is based on original MMDAgent. To know MMDAgent-EX more, it is better to check the site of original MMDAgent project.


Project preface of MMDAgent-EX.

Getting Started

Install and experience it!

Playing Manual

Let’s play a dialogue content with MMDAgent-EX.

System Overview

System components of MMDAgent-EX and how it works as general.

Content Overview

Components of a dialogue content.

File Formats

Full description and specifications of all files and tools about dialogue content.

Making a content

General flow of creating your own dialogue content

Writing scenario

Write a dialogue scenario in .fst file

How to Deploy

Deploy your content on Web.


Collection of how-to documents.


Networking of MMDAgent-EX.

All Messages

All Options in mdf

List of all options in .mdf file

System Notes

Miscellaneous Notes of detailed specification.

License Terms

License, terms of service, privary remarks and other informations.

Last modified January 8, 2021: Update links (40026f4)