Adaptive card blocks for MS Teams

Adaptive cards (opens new window) are customizable cards that can contain any combination of text, speech, images, buttons, and input fields.

With Adaptive card blocks, you can build simple or rich messages by customizing the order and appearance of each block, including elements within them.

Blocks can be used in the following MS Teams surfaces:

Surface	Applicable actions
Messages	Post message Post reply
Task modules	Coming soon!

Supported blocks

Supported blocks are displayed in the table below.

Blocks	Description
Text block	Displays Header, Subheader or Body text. To fully customize text styles, choose Custom. Supports markdown. Example text block Recipe view
Image block	Displays an image using a provided public URL. You can control the Image size and Image horizontal alignment. Example image block Recipe view
Text with thumbnail	Displays text alongside an image thumbnail. Both header text and block text are optional, but at least 1 must be filled. Order can be changed. Example text with thumbnail block Recipe view
Text with button	Displays text alongside a button to the right. A button can either invoke a command or open a URL. Order cannot be changed. Example text block Recipe view
Text with button & thumbnail	Displays a thumbnail, text and button in a single row. Both header text & block text are optional, but at least 1 must be filled. Order cannot be changed. Example of a Text with button & thumbnail in a repeat block group Recipe view
Fact set	Displays name-value pairs in 2 columns. Example fact set block Recipe view
Repeat block group	This special block type is only available only Workato. The repeat block group allows you to define a set of blocks to use as a pattern. By iterating through a list and mapping the list items to the blocks in the pattern, the pattern can be repeated for each item in the list. For example, display a different icon, details, and button for each category your bot can assist with. Example of a Text with button & thumbnail in a repeat block group Recipe view
Text input	Displays a single-line or multi-line text area for users to enter text input. On button submit, the text input is passed via the text input parameter. Example text input Recipe view
Choice set	Displays radio button options, or dropdown menu options. Example choice set Recipe view
Toggle input	Displays a single checkbox that passes true or false when checked and unchecked respectively. On submission, true or false is passed via the toggle input parameter. Example toggle input Recipe view
Date input	Displays a date picker. On submission, the date picker is passed via a date parameter. You can customize the name of this date parameter. Example date input Recipe view
Actions set	A block that can contain bot command buttons, URL buttons, or showcards. At least one bot command button is required if input blocks are present in your message. This is so that these parameters can be passed onto the downstream bot recipe on button submissions. Any bot command button will pass all input parameter values present in its containing message, regardless of the position of the button in the message. Example action set with button and show card Recipe view
Column set	Built for advanced users who want full customizability of their message. Each column set can hold multiple columns, occupying the entire row in the message. Each column can contain text blocks, image blocks, fact sets, or actions. Columns grow from left to right, based on the order they are in inside the column set. Anatomy of a column set Example column set Recipe view To see how column sets, columns, and column items can be arranged to form a message, head over to Microsoft's Adaptive Cards Designer.

Recommendations

Use Column Set and Column blocks to fully customize message structure

You have limited control over content styles for the Workato-only templates:

• Text with thumbnail
• Text with button
• Text with button & thumbnail

To fully customize message structure, use Column Set and Column blocks.

Fix your columns

Technically, you can build columns dynamically, but it can get out of control quickly (since no hard limits are set on the number of columns). MS Teams does not outright reject messages that are larger than the frame it is rendering it to, but it would not look great.

We highly recommend having a fixed set of columns and then build dynamic (or static) content inside them (the columns).

Limitations

Repeat blocks and Input blocks

• Repeat blocks and input blocks are not available inside columns
• Repeat blocks are not available within repeat blocks
• Column sets are not available inside columns