Module blocks 

Slack Block Kit types (blocks, elements, composition objects), plus message attachments, views and message metadata.

Structs

ActionCell

A cell holding a button (data table blocks only). https://docs.slack.dev/reference/block-kit/blocks/data-table-block

ActionsBlock

A block that holds interactive elements. https://docs.slack.dev/reference/block-kit/blocks/actions-block

AlertBlock

A block that shows an alert, warning or informational message (modals only). https://docs.slack.dev/reference/block-kit/blocks/alert-block

AreaChart

An area chart. https://docs.slack.dev/reference/block-kit/blocks/data-visualization-block

Attachment

A legacy secondary message attachment (can also hold blocks). https://docs.slack.dev/legacy/legacy-messaging/legacy-secondary-message-attachments

AttachmentField

A field shown in a table inside an attachment. https://docs.slack.dev/legacy/legacy-messaging/legacy-secondary-message-attachments

AttachmentMentionElement

A reference to an app attachment or entity. https://docs.slack.dev/reference/block-kit/block-elements/attachment-mention-element

AxisConfig

X-axis categories and axis labels. https://docs.slack.dev/reference/block-kit/blocks/data-visualization-block

BarChart

A bar chart. https://docs.slack.dev/reference/block-kit/blocks/data-visualization-block

BroadcastElement

A broadcast mention (@here, @channel or @everyone). https://docs.slack.dev/reference/block-kit/block-elements/broadcast-element

ButtonElement

A button. https://docs.slack.dev/reference/block-kit/block-elements/button-element

CanvasElement

A link to a canvas. https://docs.slack.dev/reference/block-kit/block-elements/canvas-element

CanvasMessageUnfurlElement

An inline preview of a message inside a canvas. https://docs.slack.dev/reference/block-kit/block-elements/canvas-message-unfurl-element

CanvasUserMentionElement

A user mention inside canvas content. https://docs.slack.dev/reference/block-kit/block-elements/canvas-user-mention-element

CardBlock

A card. https://docs.slack.dev/reference/block-kit/blocks/card-block

CarouselBlock

A horizontally scrolling row of cards. https://docs.slack.dev/reference/block-kit/blocks/carousel-block

ChannelElement

A channel mention. https://docs.slack.dev/reference/block-kit/block-elements/channel-element

ChannelsSelectElement

A select menu of public channels. https://docs.slack.dev/reference/block-kit/block-elements/select-menu-element

CheckboxesElement

A group of checkboxes. https://docs.slack.dev/reference/block-kit/block-elements/checkboxes-element

CitationElement

An AI citation. https://docs.slack.dev/reference/block-kit/block-elements/citation-element

ColorElement

A color swatch. https://docs.slack.dev/reference/block-kit/block-elements/color-element

ColumnSetting

Settings for a table column (use None for a column that keeps the defaults, sent as null). https://docs.slack.dev/reference/block-kit/blocks/table-block

ConfirmationDialog

A confirmation dialog. https://docs.slack.dev/reference/block-kit/composition-objects/confirmation-dialog-object

ContainerBlock

A container that groups child blocks. https://docs.slack.dev/reference/block-kit/blocks/container-block

ContextActionsBlock

A block that shows feedback buttons and icon buttons as contextual actions. https://docs.slack.dev/reference/block-kit/blocks/context-actions-block

ContextBlock

A block that shows supplementary info in small text and images. https://docs.slack.dev/reference/block-kit/blocks/context-block

ConversationFilter

A filter for conversation select menus. https://docs.slack.dev/reference/block-kit/composition-objects/conversation-filter-object

ConversationsSelectElement

A select menu of conversations. https://docs.slack.dev/reference/block-kit/block-elements/select-menu-element

DataPoint

One data point in a series. https://docs.slack.dev/reference/block-kit/blocks/data-visualization-block

DataSeries

A data series in a chart. https://docs.slack.dev/reference/block-kit/blocks/data-visualization-block

DataTableBlock

A table with pagination, sorting and filtering. https://docs.slack.dev/reference/block-kit/blocks/data-table-block

DataVisualizationBlock

A chart. https://docs.slack.dev/reference/block-kit/blocks/data-visualization-block

DateElement

A date formatted for the viewer’s locale and time zone. https://docs.slack.dev/reference/block-kit/block-elements/date-element

DatePickerElement

A date picker. https://docs.slack.dev/reference/block-kit/block-elements/date-picker-element

DatetimePickerElement

A date and time picker. https://docs.slack.dev/reference/block-kit/block-elements/datetime-picker-element

DispatchActionConfig

Configures when typing in an input dispatches a block_actions payload. https://docs.slack.dev/reference/block-kit/composition-objects/dispatch-action-configuration-object

DividerBlock

A divider line. https://docs.slack.dev/reference/block-kit/blocks/divider-block

EmailInputElement

An email input. https://docs.slack.dev/reference/block-kit/block-elements/email-input-element

EmojiElement

An emoji. https://docs.slack.dev/reference/block-kit/block-elements/emoji-element

ExternalCitation

An external app citation source. https://docs.slack.dev/reference/block-kit/block-elements/citation-element

ExternalSelectElement

A select menu that loads options from an external data source. https://docs.slack.dev/reference/block-kit/block-elements/select-menu-element

FeedbackButton

One of the feedback buttons. https://docs.slack.dev/reference/block-kit/block-elements/feedback-buttons-element

FeedbackButtonsElement

Positive and negative feedback buttons. https://docs.slack.dev/reference/block-kit/block-elements/feedback-buttons-element

FileBlock

A remote file (only appears in retrieved messages). https://docs.slack.dev/reference/block-kit/blocks/file-block

FileCitation

A file citation source. https://docs.slack.dev/reference/block-kit/block-elements/citation-element

FileElement

A link to a Slack file. https://docs.slack.dev/reference/block-kit/block-elements/file-element

FileInputElement

A file upload input. https://docs.slack.dev/reference/block-kit/block-elements/file-input-element

HeaderBlock

A header. https://docs.slack.dev/reference/block-kit/blocks/header-block

IconButtonElement

An icon button. https://docs.slack.dev/reference/block-kit/block-elements/icon-button-element

ImageBlock

An image block (either image_url or slack_file). https://docs.slack.dev/reference/block-kit/blocks/image-block

ImageElement

An image element (either image_url or slack_file). https://docs.slack.dev/reference/block-kit/block-elements/image-element

InputBlock

An input field. https://docs.slack.dev/reference/block-kit/blocks/input-block

InputParameter

An input parameter passed to a trigger. https://docs.slack.dev/reference/block-kit/composition-objects/trigger-object

LineChart

A line chart. https://docs.slack.dev/reference/block-kit/blocks/data-visualization-block

LinkElement

A hyperlink. https://docs.slack.dev/reference/block-kit/block-elements/link-element

ListRecordElement

A link to a Slack list record. https://docs.slack.dev/reference/block-kit/block-elements/list-record-element

MarkdownBlock

A block that renders standard Markdown. https://docs.slack.dev/reference/block-kit/blocks/markdown-block

MemoryCitation

A memory citation source. https://docs.slack.dev/reference/block-kit/block-elements/citation-element

MessageCitation

A message citation source. https://docs.slack.dev/reference/block-kit/block-elements/citation-element

MessageMentionElement

A link to a Slack message. https://docs.slack.dev/reference/block-kit/block-elements/message-mention-element

MessageMetadata

Metadata attached to a message. https://docs.slack.dev/messaging/message-metadata

Mrkdwn

A mrkdwn text object. https://docs.slack.dev/reference/block-kit/composition-objects/text-object

MultiChannelsSelectElement

A multi-select menu of public channels. https://docs.slack.dev/reference/block-kit/block-elements/multi-select-menu-element

MultiConversationsSelectElement

A multi-select menu of conversations. https://docs.slack.dev/reference/block-kit/block-elements/multi-select-menu-element

MultiExternalSelectElement

A multi-select menu that loads options from an external data source. https://docs.slack.dev/reference/block-kit/block-elements/multi-select-menu-element

MultiStaticSelectElement

A multi-select menu with static options (either options or option_groups). https://docs.slack.dev/reference/block-kit/block-elements/multi-select-menu-element

MultiUsersSelectElement

A multi-select menu of users. https://docs.slack.dev/reference/block-kit/block-elements/multi-select-menu-element

NumberInputElement

A number input. https://docs.slack.dev/reference/block-kit/block-elements/number-input-element

OptionGroup

A group of options. https://docs.slack.dev/reference/block-kit/composition-objects/option-group-object

OptionObject

An option. https://docs.slack.dev/reference/block-kit/composition-objects/option-object

OverflowElement

An overflow menu. https://docs.slack.dev/reference/block-kit/block-elements/overflow-menu-element

PieChart

A pie chart. https://docs.slack.dev/reference/block-kit/blocks/data-visualization-block

PlainText

A plain_text text object. https://docs.slack.dev/reference/block-kit/composition-objects/text-object

PlainTextInputElement

A plain-text input. https://docs.slack.dev/reference/block-kit/block-elements/plain-text-input-element

PlanBlock

A collection of related tasks. https://docs.slack.dev/reference/block-kit/blocks/plan-block

PlanTask

A task inside a plan block (has no type). https://docs.slack.dev/reference/block-kit/blocks/plan-block

RadioButtonsElement

A radio button group. https://docs.slack.dev/reference/block-kit/block-elements/radio-button-group-element

RawNumberCell

A numeric cell. https://docs.slack.dev/reference/block-kit/blocks/data-table-block

RawTextCell

A plain text cell. https://docs.slack.dev/reference/block-kit/blocks/data-table-block

RichTextBlock

A rich text block. https://docs.slack.dev/reference/block-kit/blocks/rich-text-block

RichTextInputElement

A rich text input. https://docs.slack.dev/reference/block-kit/block-elements/rich-text-input-element

RichTextList

A rich text list. https://docs.slack.dev/reference/block-kit/block-elements/rich-text-list-element

RichTextPreformatted

A rich text preformatted (code) block. https://docs.slack.dev/reference/block-kit/block-elements/rich-text-preformatted-element

RichTextQuote

A rich text quote. https://docs.slack.dev/reference/block-kit/block-elements/rich-text-quote-element

RichTextSection

A rich text section. https://docs.slack.dev/reference/block-kit/block-elements/rich-text-section-element

RichTextStyle

Styling for a rich text element. https://docs.slack.dev/reference/block-kit/block-elements/text-element

SalesforceDataFieldElement

A reference to a Salesforce data field. https://docs.slack.dev/reference/block-kit/block-elements/salesforce-data-field-element

SectionBlock

The basic block for text, optionally alongside an element. https://docs.slack.dev/reference/block-kit/blocks/section-block

Segment

One slice of a pie chart. https://docs.slack.dev/reference/block-kit/blocks/data-visualization-block

SlackFile

A Slack file used as an image (either url or id). https://docs.slack.dev/reference/block-kit/composition-objects/slack-file-object

SlackIcon

A built-in Slack icon. https://docs.slack.dev/reference/block-kit/composition-objects/slack-icon-object

StaticSelectElement

A select menu with static options (either options or option_groups). https://docs.slack.dev/reference/block-kit/block-elements/select-menu-element

TableBlock

A table. https://docs.slack.dev/reference/block-kit/blocks/table-block

TagElement

A colored tag. https://docs.slack.dev/reference/block-kit/block-elements/tag-element

TaskCardBlock

A single task. https://docs.slack.dev/reference/block-kit/blocks/task-card-block

TeamElement

A workspace (team) mention. https://docs.slack.dev/reference/block-kit/block-elements/team-element

TextElement

Text. https://docs.slack.dev/reference/block-kit/block-elements/text-element

TimePickerElement

A time picker. https://docs.slack.dev/reference/block-kit/block-elements/time-picker-element

Trigger

A workflow link trigger. https://docs.slack.dev/reference/block-kit/composition-objects/trigger-object

UrlInputElement

A URL input. https://docs.slack.dev/reference/block-kit/block-elements/url-input-element

UrlSourceElement

A URL source shown in a task card block. https://docs.slack.dev/reference/block-kit/block-elements/url-source-element

UserElement

A user mention. https://docs.slack.dev/reference/block-kit/block-elements/user-element

UsergroupElement

A user group mention. https://docs.slack.dev/reference/block-kit/block-elements/usergroup-element

UsersSelectElement

A select menu of users. https://docs.slack.dev/reference/block-kit/block-elements/select-menu-element

VideoBlock

An embedded video. https://docs.slack.dev/reference/block-kit/blocks/video-block

View

A view for views.open / publish / update / push (the later fields are only returned by Slack). https://docs.slack.dev/reference/views

ViewState

Current input values (block_id -> action_id -> value). Kept as raw JSON because the shape differs by element type.

WebCitation

A web page citation source. https://docs.slack.dev/reference/block-kit/block-elements/citation-element

WorkObjectMentionElement

A reference to a Work Object. https://docs.slack.dev/reference/block-kit/block-elements/work-object-mention-element

Workflow

The workflow run by a workflow button. https://docs.slack.dev/reference/block-kit/composition-objects/workflow-object

WorkflowButtonElement

A button that runs a workflow. https://docs.slack.dev/reference/block-kit/block-elements/workflow-button-element

WorkflowMentionElement

A link to a workflow. https://docs.slack.dev/reference/block-kit/block-elements/workflow-mention-element

Enums

ActionCellFallback

The cell shown instead of the button on clients that do not support action cells. https://docs.slack.dev/reference/block-kit/blocks/data-table-block

ActionsElement

An element allowed in an actions block. https://docs.slack.dev/reference/block-kit/blocks/actions-block

AlertLevel

The level of an alert block. Unknown values go to Other.

AttachmentTs

The ts of an attachment. Sent as a number, but returned as a string (e.g. "1503435956.000247") in places such as message unfurls.

Block

A layout block. https://docs.slack.dev/reference/block-kit/blocks

BroadcastRange

The range of a broadcast mention. Unknown values go to Other.

ButtonStyle

The color scheme of a button. Unknown values go to Other.

Chart

The chart payload for each chart type. https://docs.slack.dev/reference/block-kit/blocks/data-visualization-block

CitationDetails

Details of a citation source (the kind is set by citation_type). https://docs.slack.dev/reference/block-kit/block-elements/citation-element

ColumnAlign

Column alignment. Unknown values go to Other.

ContainerWidth

The width of a container block. Unknown values go to Other.

ContextActionsElement

An element allowed in a context actions block. https://docs.slack.dev/reference/block-kit/blocks/context-actions-block

ContextElement

An element allowed in a context block (images and text). https://docs.slack.dev/reference/block-kit/blocks/context-block

ConversationType

A conversation type. Unknown values go to Other.

DataTableCell

A cell in a data table block. https://docs.slack.dev/reference/block-kit/blocks/data-table-block

InputElement

An element allowed in an input block. https://docs.slack.dev/reference/block-kit/blocks/input-block

PreformattedElement

An element allowed in a preformatted block (text and links). https://docs.slack.dev/reference/block-kit/block-elements/rich-text-preformatted-element

RichTextElement

An inline rich text element used in sections, lists and quotes. https://docs.slack.dev/reference/block-kit/block-elements/rich-text-section-element

RichTextListStyle

The style of a rich text list. Unknown values go to Other.

RichTextObject

A top-level element of a rich text block. https://docs.slack.dev/reference/block-kit/blocks/rich-text-block

SectionAccessory

An element allowed as the accessory of a section block. https://docs.slack.dev/reference/block-kit/blocks/section-block

TableCell

A cell in a table block. https://docs.slack.dev/reference/block-kit/blocks/table-block

TagColor

The color of a tag. Unknown values go to Other.

TaskStatus

The status of a task. Unknown values go to Other.

TextObject

A text object (plain_text or mrkdwn). https://docs.slack.dev/reference/block-kit/composition-objects/text-object

TriggerAction

An event that dispatches a block_actions payload. Unknown values go to Other.

ViewType

The type of a view. Unknown values go to Other.