Blocks

This page documents the Ruby API for blocks. Values use keyword-only construction, validate before freezing, and serialize to Slack JSON.

ActionsBlock

A block that holds interactive elements such as buttons and menus.

See the Slack reference.

.new

Construct an immutable, validated value with keyword arguments. Required keywords: elements.

def self.new: (elements: Array[Element], ?block_id: (String)?, ?additional_fields: Hash[String | Symbol, untyped]?) -> ActionsBlock

Parameter	Description
elements	Adds interactive elements in display order.
block_id	Sets a unique identifier for this block. Slack returns it in interaction payloads, so use a stable value when you need to find the block again.
additional_fields	JSON-compatible extension fields that do not replace modeled wire keys.

Returns: ActionsBlock

Throws	When
ValidationError	A field or cross-field Slack rule fails.

Related types: ActionsBlock, Element

.[]

Keyword-only alias for .new.

def self.[]: (elements: Array[Element], ?block_id: (String)?, ?additional_fields: Hash[String | Symbol, untyped]?) -> ActionsBlock

Returns: ActionsBlock

Related types: ActionsBlock, Element

elements

Adds interactive elements in display order. Wire key: elements.

def elements: () -> Array[Element]

Returns: Array[Element]

Related types: Element

block_id

Sets a unique identifier for this block. Slack returns it in interaction payloads, so use a stable value when you need to find the block again. Wire key: block_id.

def block_id: () -> (String)?

Returns: (String)?

additional_fields

Return frozen extension fields with normalized string keys.

def additional_fields: () -> Hash[String, untyped]

with

Return a newly validated value with changed keywords.

def with: (**untyped changes) -> ActionsBlock

Returns: ActionsBlock

Related types: ActionsBlock

to_h

Return structural Ruby members, including additional_fields. Nested members remain frozen.

def to_h: () -> Hash[Symbol, untyped]

as_json

Return a fresh, detached Slack wire Hash.

def as_json: (?untyped options) -> Hash[String, untyped]

to_json

Encode the Slack wire payload as JSON.

def to_json: (?untyped options) -> String

AlertBlock

A severity-labelled alert, available in modals.

See the Slack reference.

.new

Construct an immutable, validated value with keyword arguments. Required keywords: text.

def self.new: (text: String | Text, ?level: (:default | :info | :warning | :error | :success)?, ?block_id: (String)?, ?additional_fields: Hash[String | Symbol, untyped]?) -> AlertBlock

Parameter	Description
text	Sets the alert message.
level	Sets the alert severity, which controls its color and icon.
block_id	Sets a unique identifier for this block. Slack returns it in interaction payloads, so use a stable value when you need to find the block again.
additional_fields	JSON-compatible extension fields that do not replace modeled wire keys.

Returns: AlertBlock

Throws	When
ValidationError	A field or cross-field Slack rule fails.

Related types: AlertBlock, Text

.[]

Keyword-only alias for .new.

def self.[]: (text: String | Text, ?level: (:default | :info | :warning | :error | :success)?, ?block_id: (String)?, ?additional_fields: Hash[String | Symbol, untyped]?) -> AlertBlock

Returns: AlertBlock

Related types: AlertBlock, Text

text

Sets the alert message. Wire key: text.

def text: () -> Text

Returns: Text

Related types: Text

level

Sets the alert severity, which controls its color and icon. Wire key: level.

def level: () -> (:default | :info | :warning | :error | :success)?

Returns: (:default | :info | :warning | :error | :success)?

block_id

Sets a unique identifier for this block. Slack returns it in interaction payloads, so use a stable value when you need to find the block again. Wire key: block_id.

def block_id: () -> (String)?

Returns: (String)?

additional_fields

Return frozen extension fields with normalized string keys.

def additional_fields: () -> Hash[String, untyped]

with

Return a newly validated value with changed keywords.

def with: (**untyped changes) -> AlertBlock

Returns: AlertBlock

Related types: AlertBlock

to_h

Return structural Ruby members, including additional_fields. Nested members remain frozen.

def to_h: () -> Hash[Symbol, untyped]

as_json

Return a fresh, detached Slack wire Hash.

def as_json: (?untyped options) -> Hash[String, untyped]

to_json

Encode the Slack wire payload as JSON.

def to_json: (?untyped options) -> String

AlertLevel

Severity levels supported by alert blocks. Pass the wire symbol to constructor keywords.

Constant	Slack value	Meaning
DEFAULT	:default	Neutral styling.
INFO	:info	Informational styling.
WARNING	:warning	Warning styling.
ERROR	:error	Error styling.
SUCCESS	:success	Success styling.

Block

A validated Slack layout block accepted by payload block arrays.

CardBlock

A compact card with an image, text, and up to three buttons.

See the Slack reference.

.new

Construct an immutable, validated value with keyword arguments.

def self.new: (?hero_image: (ImageElement)?, ?icon: (ImageElement)?, ?title: (String | Text)?, ?subtitle: (String | Text)?, ?body: (String | Text)?, ?actions: (Array[ButtonElement])?, ?slack_icon: (SlackIcon)?, ?subtext: (String | Text)?, ?block_id: (String)?, ?additional_fields: Hash[String | Symbol, untyped]?) -> CardBlock

Parameter	Description
hero_image	Sets the image displayed prominently at the top of the card.
icon	Sets the image displayed beside the title.
title	Sets the card title.
subtitle	Sets the supporting text shown below the title.
body	Sets the main body text of the card.
actions	Adds up to three buttons in serialization order. Slack controls their visual placement: buttons are right-aligned with primary last; a danger button precedes the other button in a two-button group, or sits at the card's far left with three buttons.
slack_icon	Sets a Slack-provided icon displayed beside the title. Cannot be combined with an image icon.
subtext	Sets the small print shown at the bottom of the card.
block_id	Sets a unique identifier for this block. Slack returns it in interaction payloads, so use a stable value when you need to find the block again.
additional_fields	JSON-compatible extension fields that do not replace modeled wire keys.

Returns: CardBlock

Throws	When
ValidationError	A field or cross-field Slack rule fails.

Related types: ButtonElement, CardBlock, ImageElement, SlackIcon, Text

.[]

Keyword-only alias for .new.

def self.[]: (?hero_image: (ImageElement)?, ?icon: (ImageElement)?, ?title: (String | Text)?, ?subtitle: (String | Text)?, ?body: (String | Text)?, ?actions: (Array[ButtonElement])?, ?slack_icon: (SlackIcon)?, ?subtext: (String | Text)?, ?block_id: (String)?, ?additional_fields: Hash[String | Symbol, untyped]?) -> CardBlock

Returns: CardBlock

Related types: ButtonElement, CardBlock, ImageElement, SlackIcon, Text

hero_image

Sets the image displayed prominently at the top of the card. Wire key: hero_image.

def hero_image: () -> (ImageElement)?

Returns: (ImageElement)?

Related types: ImageElement

icon

Sets the image displayed beside the title. Wire key: icon.

def icon: () -> (ImageElement)?

Returns: (ImageElement)?

Related types: ImageElement

title

Sets the card title. Wire key: title.

def title: () -> (Text)?

Returns: (Text)?

Related types: Text

subtitle

Sets the supporting text shown below the title. Wire key: subtitle.

def subtitle: () -> (Text)?

Returns: (Text)?

Related types: Text

body

Sets the main body text of the card. Wire key: body.

def body: () -> (Text)?

Returns: (Text)?

Related types: Text

actions

Adds up to three buttons in serialization order. Slack controls their visual placement: buttons are right-aligned with primary last; a danger button precedes the other button in a two-button group, or sits at the card's far left with three buttons. Wire key: actions.

def actions: () -> (Array[ButtonElement])?

Returns: (Array[ButtonElement])?

Related types: ButtonElement

slack_icon

Sets a Slack-provided icon displayed beside the title. Cannot be combined with an image icon. Wire key: slack_icon.

def slack_icon: () -> (SlackIcon)?

Returns: (SlackIcon)?

Related types: SlackIcon

subtext

Sets the small print shown at the bottom of the card. Wire key: subtext.

def subtext: () -> (Text)?

Returns: (Text)?

Related types: Text

block_id

Sets a unique identifier for this block. Slack returns it in interaction payloads, so use a stable value when you need to find the block again. Wire key: block_id.

def block_id: () -> (String)?

Returns: (String)?

additional_fields

Return frozen extension fields with normalized string keys.

def additional_fields: () -> Hash[String, untyped]

with

Return a newly validated value with changed keywords.

def with: (**untyped changes) -> CardBlock

Returns: CardBlock

Related types: CardBlock

to_h

Return structural Ruby members, including additional_fields. Nested members remain frozen.

def to_h: () -> Hash[Symbol, untyped]

as_json

Return a fresh, detached Slack wire Hash.

def as_json: (?untyped options) -> Hash[String, untyped]

to_json

Encode the Slack wire payload as JSON.

def to_json: (?untyped options) -> String

CarouselBlock

A horizontally scrolling set of cards, available in messages and App Home.

See the Slack reference.

.new

Construct an immutable, validated value with keyword arguments. Required keywords: elements.

def self.new: (elements: Array[CardBlock], ?block_id: (String)?, ?additional_fields: Hash[String | Symbol, untyped]?) -> CarouselBlock

Parameter	Description
elements	Adds the cards in display order.
block_id	Sets a unique identifier for this block. Slack returns it in interaction payloads, so use a stable value when you need to find the block again.
additional_fields	JSON-compatible extension fields that do not replace modeled wire keys.

Returns: CarouselBlock

Throws	When
ValidationError	A field or cross-field Slack rule fails.

Related types: CardBlock, CarouselBlock

.[]

Keyword-only alias for .new.

def self.[]: (elements: Array[CardBlock], ?block_id: (String)?, ?additional_fields: Hash[String | Symbol, untyped]?) -> CarouselBlock

Returns: CarouselBlock

Related types: CardBlock, CarouselBlock

elements

Adds the cards in display order. Wire key: elements.

def elements: () -> Array[CardBlock]

Returns: Array[CardBlock]

Related types: CardBlock

block_id

Sets a unique identifier for this block. Slack returns it in interaction payloads, so use a stable value when you need to find the block again. Wire key: block_id.

def block_id: () -> (String)?

Returns: (String)?

additional_fields

Return frozen extension fields with normalized string keys.

def additional_fields: () -> Hash[String, untyped]

with

Return a newly validated value with changed keywords.

def with: (**untyped changes) -> CarouselBlock

Returns: CarouselBlock

Related types: CarouselBlock

to_h

Return structural Ruby members, including additional_fields. Nested members remain frozen.

def to_h: () -> Hash[Symbol, untyped]

as_json

Return a fresh, detached Slack wire Hash.

def as_json: (?untyped options) -> Hash[String, untyped]

to_json

Encode the Slack wire payload as JSON.

def to_json: (?untyped options) -> String

ContainerBlock

A titled group of blocks that can optionally collapse.

See the Slack reference.

.new

Construct an immutable, validated value with keyword arguments. Required keywords: child_blocks.

def self.new: (child_blocks: Array[Block], ?title: (String | PlainText)?, ?rich_text_title: (RichTextBlock)?, ?subtitle: (String | Text)?, ?width: (:narrow | :standard | :wide | :full)?, ?icon: (ImageElement)?, ?is_collapsible: (bool)?, ?default_collapsed: (bool)?, ?has_header_divider: (bool)?, ?block_id: (String)?, ?additional_fields: Hash[String | Symbol, untyped]?) -> ContainerBlock

Parameter	Description
child_blocks	Adds the blocks grouped inside the container, in display order.
title	Sets the container title. Provide either a title or a rich text title.
rich_text_title	Sets a rich text block used as the title in place of a plain-text title.
subtitle	Sets the supporting text shown below the title.
width	Sets the horizontal width of the container.
icon	Sets the image displayed beside the title.
is_collapsible	Sets whether users can collapse and expand the container.
default_collapsed	Sets whether a collapsible container starts collapsed. Requires the container to be collapsible.
has_header_divider	Sets whether Slack draws a divider below the container header. Only valid for non-collapsible containers.
block_id	Sets a unique identifier for this block. Slack returns it in interaction payloads, so use a stable value when you need to find the block again.
additional_fields	JSON-compatible extension fields that do not replace modeled wire keys.

Returns: ContainerBlock

Throws	When
ValidationError	A field or cross-field Slack rule fails.

Related types: Block, ContainerBlock, ImageElement, PlainText, RichTextBlock, Text

.[]

Keyword-only alias for .new.

def self.[]: (child_blocks: Array[Block], ?title: (String | PlainText)?, ?rich_text_title: (RichTextBlock)?, ?subtitle: (String | Text)?, ?width: (:narrow | :standard | :wide | :full)?, ?icon: (ImageElement)?, ?is_collapsible: (bool)?, ?default_collapsed: (bool)?, ?has_header_divider: (bool)?, ?block_id: (String)?, ?additional_fields: Hash[String | Symbol, untyped]?) -> ContainerBlock

Returns: ContainerBlock

Related types: Block, ContainerBlock, ImageElement, PlainText, RichTextBlock, Text

child_blocks

Adds the blocks grouped inside the container, in display order. Wire key: child_blocks.

def child_blocks: () -> Array[Block]

Returns: Array[Block]

Related types: Block

title

Sets the container title. Provide either a title or a rich text title. Wire key: title.

def title: () -> (PlainText)?

Returns: (PlainText)?

Related types: PlainText

rich_text_title

Sets a rich text block used as the title in place of a plain-text title. Wire key: rich_text_title.

def rich_text_title: () -> (RichTextBlock)?

Returns: (RichTextBlock)?

Related types: RichTextBlock

subtitle

Sets the supporting text shown below the title. Wire key: subtitle.

def subtitle: () -> (Text)?

Returns: (Text)?

Related types: Text

width

Sets the horizontal width of the container. Wire key: width.

def width: () -> (:narrow | :standard | :wide | :full)?

Returns: (:narrow | :standard | :wide | :full)?

icon

Sets the image displayed beside the title. Wire key: icon.

def icon: () -> (ImageElement)?

Returns: (ImageElement)?

Related types: ImageElement

is_collapsible

Sets whether users can collapse and expand the container. Wire key: is_collapsible.

def is_collapsible: () -> (bool)?

Returns: (bool)?

default_collapsed

Sets whether a collapsible container starts collapsed. Requires the container to be collapsible. Wire key: default_collapsed.

def default_collapsed: () -> (bool)?

Returns: (bool)?

has_header_divider

Sets whether Slack draws a divider below the container header. Only valid for non-collapsible containers. Wire key: has_header_divider.

def has_header_divider: () -> (bool)?

Returns: (bool)?

block_id

Sets a unique identifier for this block. Slack returns it in interaction payloads, so use a stable value when you need to find the block again. Wire key: block_id.

def block_id: () -> (String)?

Returns: (String)?

additional_fields

Return frozen extension fields with normalized string keys.

def additional_fields: () -> Hash[String, untyped]

with

Return a newly validated value with changed keywords.

def with: (**untyped changes) -> ContainerBlock

Returns: ContainerBlock

Related types: ContainerBlock

to_h

Return structural Ruby members, including additional_fields. Nested members remain frozen.

def to_h: () -> Hash[Symbol, untyped]

as_json

Return a fresh, detached Slack wire Hash.

def as_json: (?untyped options) -> Hash[String, untyped]

to_json

Encode the Slack wire payload as JSON.

def to_json: (?untyped options) -> String

ContainerWidth

Widths supported by Slack container blocks. Pass the wire symbol to constructor keywords.

Constant	Slack value	Meaning
NARROW	:narrow	A compact container.
STANDARD	:standard	Slack's standard container width.
WIDE	:wide	A wide container.
FULL	:full	The full available width.

ContextActionsBlock

A row of feedback or icon buttons, usually shown below AI-generated content.

See the Slack reference.

.new

Construct an immutable, validated value with keyword arguments. Required keywords: elements.

def self.new: (elements: Array[ContextActionsElement], ?block_id: (String)?, ?additional_fields: Hash[String | Symbol, untyped]?) -> ContextActionsBlock

Parameter	Description
elements	Adds feedback buttons or icon buttons in display order.
block_id	Sets a unique identifier for this block. Slack returns it in interaction payloads, so use a stable value when you need to find the block again.
additional_fields	JSON-compatible extension fields that do not replace modeled wire keys.

Returns: ContextActionsBlock

Throws	When
ValidationError	A field or cross-field Slack rule fails.

Related types: ContextActionsBlock, ContextActionsElement

.[]

Keyword-only alias for .new.

def self.[]: (elements: Array[ContextActionsElement], ?block_id: (String)?, ?additional_fields: Hash[String | Symbol, untyped]?) -> ContextActionsBlock

Returns: ContextActionsBlock

Related types: ContextActionsBlock, ContextActionsElement

elements

Adds feedback buttons or icon buttons in display order. Wire key: elements.

def elements: () -> Array[ContextActionsElement]

Returns: Array[ContextActionsElement]

Related types: ContextActionsElement

block_id

Sets a unique identifier for this block. Slack returns it in interaction payloads, so use a stable value when you need to find the block again. Wire key: block_id.

def block_id: () -> (String)?

Returns: (String)?

additional_fields

Return frozen extension fields with normalized string keys.

def additional_fields: () -> Hash[String, untyped]

with

Return a newly validated value with changed keywords.

def with: (**untyped changes) -> ContextActionsBlock

Returns: ContextActionsBlock

Related types: ContextActionsBlock

to_h

Return structural Ruby members, including additional_fields. Nested members remain frozen.

def to_h: () -> Hash[Symbol, untyped]

as_json

Return a fresh, detached Slack wire Hash.

def as_json: (?untyped options) -> Hash[String, untyped]

to_json

Encode the Slack wire payload as JSON.

def to_json: (?untyped options) -> String

ContextActionsElement

A value that can appear in a context actions block: feedback buttons or an icon button.

ContextBlock

A block of small, secondary images and text.

See the Slack reference.

.new

Construct an immutable, validated value with keyword arguments. Required keywords: elements.

def self.new: (elements: Array[ContextElement], ?block_id: (String)?, ?additional_fields: Hash[String | Symbol, untyped]?) -> ContextBlock

Parameter	Description
elements	Adds images and text in display order.
block_id	Sets a unique identifier for this block. Slack returns it in interaction payloads, so use a stable value when you need to find the block again.
additional_fields	JSON-compatible extension fields that do not replace modeled wire keys.

Returns: ContextBlock

Throws	When
ValidationError	A field or cross-field Slack rule fails.

Related types: ContextBlock, ContextElement

.[]

Keyword-only alias for .new.

def self.[]: (elements: Array[ContextElement], ?block_id: (String)?, ?additional_fields: Hash[String | Symbol, untyped]?) -> ContextBlock

Returns: ContextBlock

Related types: ContextBlock, ContextElement

elements

Adds images and text in display order. Wire key: elements.

def elements: () -> Array[ContextElement]

Returns: Array[ContextElement]

Related types: ContextElement

block_id

Sets a unique identifier for this block. Slack returns it in interaction payloads, so use a stable value when you need to find the block again. Wire key: block_id.

def block_id: () -> (String)?

Returns: (String)?

additional_fields

Return frozen extension fields with normalized string keys.

def additional_fields: () -> Hash[String, untyped]

with

Return a newly validated value with changed keywords.

def with: (**untyped changes) -> ContextBlock

Returns: ContextBlock

Related types: ContextBlock

to_h

Return structural Ruby members, including additional_fields. Nested members remain frozen.

def to_h: () -> Hash[Symbol, untyped]

as_json

Return a fresh, detached Slack wire Hash.

def as_json: (?untyped options) -> Hash[String, untyped]

to_json

Encode the Slack wire payload as JSON.

def to_json: (?untyped options) -> String

ContextElement

A value that can appear in a context block: an image element or a text object.

DataTableBlock

A sortable, paginated table of raw text, numbers, and rich text.

See the Slack reference.

.new

Construct an immutable, validated value with keyword arguments. Required keywords: rows, caption.

def self.new: (rows: Array[Array[DataTableCell]], caption: String, ?page_size: (Integer)?, ?row_header_column_index: (Integer)?, ?block_id: (String)?, ?additional_fields: Hash[String | Symbol, untyped]?) -> DataTableBlock

Parameter	Description
rows	Adds complete table rows in display order. Every row must have the same number of cells.
caption	Sets the caption that describes the table's contents.
page_size	Sets how many rows Slack shows per page.
row_header_column_index	Sets the zero-based index of the column whose cells act as row headers.
block_id	Sets a unique identifier for this block. Slack returns it in interaction payloads, so use a stable value when you need to find the block again.
additional_fields	JSON-compatible extension fields that do not replace modeled wire keys.

Returns: DataTableBlock

Throws	When
ValidationError	A field or cross-field Slack rule fails.

Related types: DataTableBlock, DataTableCell

.[]

Keyword-only alias for .new.

def self.[]: (rows: Array[Array[DataTableCell]], caption: String, ?page_size: (Integer)?, ?row_header_column_index: (Integer)?, ?block_id: (String)?, ?additional_fields: Hash[String | Symbol, untyped]?) -> DataTableBlock

Returns: DataTableBlock

Related types: DataTableBlock, DataTableCell

rows

Adds complete table rows in display order. Every row must have the same number of cells. Wire key: rows.

def rows: () -> Array[Array[DataTableCell]]

Returns: Array[Array[DataTableCell]]

Related types: DataTableCell

caption

Sets the caption that describes the table's contents. Wire key: caption.

def caption: () -> String

Returns: String

page_size

Sets how many rows Slack shows per page. Wire key: page_size.

def page_size: () -> (Integer)?

Returns: (Integer)?

row_header_column_index

Sets the zero-based index of the column whose cells act as row headers. Wire key: row_header_column_index.

def row_header_column_index: () -> (Integer)?

Returns: (Integer)?

block_id

Sets a unique identifier for this block. Slack returns it in interaction payloads, so use a stable value when you need to find the block again. Wire key: block_id.

def block_id: () -> (String)?

Returns: (String)?

additional_fields

Return frozen extension fields with normalized string keys.

def additional_fields: () -> Hash[String, untyped]

with

Return a newly validated value with changed keywords.

def with: (**untyped changes) -> DataTableBlock

Returns: DataTableBlock

Related types: DataTableBlock

to_h

Return structural Ruby members, including additional_fields. Nested members remain frozen.

def to_h: () -> Hash[Symbol, untyped]

as_json

Return a fresh, detached Slack wire Hash.

def as_json: (?untyped options) -> Hash[String, untyped]

to_json

Encode the Slack wire payload as JSON.

def to_json: (?untyped options) -> String

DataTableCell

A value that can appear as a data table cell: raw text, a raw number, or a rich text block.

DataVisualizationBlock

A titled pie, bar, area, or line chart.

See the Slack reference.

.new

Construct an immutable, validated value with keyword arguments. Required keywords: title, chart.

def self.new: (title: String, chart: Chart, ?block_id: (String)?, ?additional_fields: Hash[String | Symbol, untyped]?) -> DataVisualizationBlock

Parameter	Description
title	Sets the chart title.
chart	Sets the chart to display.
block_id	Sets a unique identifier for this block. Slack returns it in interaction payloads, so use a stable value when you need to find the block again.
additional_fields	JSON-compatible extension fields that do not replace modeled wire keys.

Returns: DataVisualizationBlock

Throws	When
ValidationError	A field or cross-field Slack rule fails.

Related types: Chart, DataVisualizationBlock

.[]

Keyword-only alias for .new.

def self.[]: (title: String, chart: Chart, ?block_id: (String)?, ?additional_fields: Hash[String | Symbol, untyped]?) -> DataVisualizationBlock

Returns: DataVisualizationBlock

Related types: Chart, DataVisualizationBlock

title

Sets the chart title. Wire key: title.

def title: () -> String

Returns: String

chart

Sets the chart to display. Wire key: chart.

def chart: () -> Chart

Returns: Chart

Related types: Chart

block_id

Sets a unique identifier for this block. Slack returns it in interaction payloads, so use a stable value when you need to find the block again. Wire key: block_id.

def block_id: () -> (String)?

Returns: (String)?

additional_fields

Return frozen extension fields with normalized string keys.

def additional_fields: () -> Hash[String, untyped]

with

Return a newly validated value with changed keywords.

def with: (**untyped changes) -> DataVisualizationBlock

Returns: DataVisualizationBlock

Related types: DataVisualizationBlock

to_h

Return structural Ruby members, including additional_fields. Nested members remain frozen.

def to_h: () -> Hash[Symbol, untyped]

as_json

Return a fresh, detached Slack wire Hash.

def as_json: (?untyped options) -> Hash[String, untyped]

to_json

Encode the Slack wire payload as JSON.

def to_json: (?untyped options) -> String

DividerBlock

A horizontal rule that separates blocks.

See the Slack reference.

.new

Construct an immutable, validated value with keyword arguments.

def self.new: (?block_id: (String)?, ?additional_fields: Hash[String | Symbol, untyped]?) -> DividerBlock

Parameter	Description
block_id	Sets a unique identifier for this block. Slack returns it in interaction payloads, so use a stable value when you need to find the block again.
additional_fields	JSON-compatible extension fields that do not replace modeled wire keys.

Returns: DividerBlock

Throws	When
ValidationError	A field or cross-field Slack rule fails.

Related types: DividerBlock

.[]

Keyword-only alias for .new.

def self.[]: (?block_id: (String)?, ?additional_fields: Hash[String | Symbol, untyped]?) -> DividerBlock

Returns: DividerBlock

Related types: DividerBlock

block_id

Sets a unique identifier for this block. Slack returns it in interaction payloads, so use a stable value when you need to find the block again. Wire key: block_id.

def block_id: () -> (String)?

Returns: (String)?

additional_fields

Return frozen extension fields with normalized string keys.

def additional_fields: () -> Hash[String, untyped]

with

Return a newly validated value with changed keywords.

def with: (**untyped changes) -> DividerBlock

Returns: DividerBlock

Related types: DividerBlock

to_h

Return structural Ruby members, including additional_fields. Nested members remain frozen.

def to_h: () -> Hash[Symbol, untyped]

as_json

Return a fresh, detached Slack wire Hash.

def as_json: (?untyped options) -> Hash[String, untyped]

to_json

Encode the Slack wire payload as JSON.

def to_json: (?untyped options) -> String

FileBlock

A remote file previously added with the files.remote API.

See the Slack reference.

.new

Construct an immutable, validated value with keyword arguments. Required keywords: external_id.

def self.new: (external_id: String, ?source: (String)?, ?block_id: (String)?, ?additional_fields: Hash[String | Symbol, untyped]?) -> FileBlock

Parameter	Description
external_id	Sets the external identifier of a remote file previously added with the files.remote API.
source	Sets the file source. Slack currently supports only remote files.
block_id	Sets a unique identifier for this block. Slack returns it in interaction payloads, so use a stable value when you need to find the block again.
additional_fields	JSON-compatible extension fields that do not replace modeled wire keys.

Returns: FileBlock

Throws	When
ValidationError	A field or cross-field Slack rule fails.

Related types: FileBlock

.[]

Keyword-only alias for .new.

def self.[]: (external_id: String, ?source: (String)?, ?block_id: (String)?, ?additional_fields: Hash[String | Symbol, untyped]?) -> FileBlock

Returns: FileBlock

Related types: FileBlock

external_id

Sets the external identifier of a remote file previously added with the files.remote API. Wire key: external_id.

def external_id: () -> String

Returns: String

source

Sets the file source. Slack currently supports only remote files. Wire key: source.

def source: () -> (String)?

Returns: (String)?

block_id

Sets a unique identifier for this block. Slack returns it in interaction payloads, so use a stable value when you need to find the block again. Wire key: block_id.

def block_id: () -> (String)?

Returns: (String)?

additional_fields

Return frozen extension fields with normalized string keys.

def additional_fields: () -> Hash[String, untyped]

with

Return a newly validated value with changed keywords.

def with: (**untyped changes) -> FileBlock

Returns: FileBlock

Related types: FileBlock

to_h

Return structural Ruby members, including additional_fields. Nested members remain frozen.

def to_h: () -> Hash[Symbol, untyped]

as_json

Return a fresh, detached Slack wire Hash.

def as_json: (?untyped options) -> Hash[String, untyped]

to_json

Encode the Slack wire payload as JSON.

def to_json: (?untyped options) -> String

HeaderBlock

Large, bold plain text that introduces a group of blocks.

See the Slack reference.

.new

Construct an immutable, validated value with keyword arguments. Required keywords: text.

def self.new: (text: String | PlainText, ?block_id: (String)?, ?additional_fields: Hash[String | Symbol, untyped]?) -> HeaderBlock

Parameter	Description
text	Sets the header text, shown in a larger bold font.
block_id	Sets a unique identifier for this block. Slack returns it in interaction payloads, so use a stable value when you need to find the block again.
additional_fields	JSON-compatible extension fields that do not replace modeled wire keys.

Returns: HeaderBlock

Throws	When
ValidationError	A field or cross-field Slack rule fails.

Related types: HeaderBlock, PlainText

.[]

Keyword-only alias for .new.

def self.[]: (text: String | PlainText, ?block_id: (String)?, ?additional_fields: Hash[String | Symbol, untyped]?) -> HeaderBlock

Returns: HeaderBlock

Related types: HeaderBlock, PlainText

text

Sets the header text, shown in a larger bold font. Wire key: text.

def text: () -> PlainText

Returns: PlainText

Related types: PlainText

block_id

Sets a unique identifier for this block. Slack returns it in interaction payloads, so use a stable value when you need to find the block again. Wire key: block_id.

def block_id: () -> (String)?

Returns: (String)?

additional_fields

Return frozen extension fields with normalized string keys.

def additional_fields: () -> Hash[String, untyped]

with

Return a newly validated value with changed keywords.

def with: (**untyped changes) -> HeaderBlock

Returns: HeaderBlock

Related types: HeaderBlock

to_h

Return structural Ruby members, including additional_fields. Nested members remain frozen.

def to_h: () -> Hash[Symbol, untyped]

as_json

Return a fresh, detached Slack wire Hash.

def as_json: (?untyped options) -> Hash[String, untyped]

to_json

Encode the Slack wire payload as JSON.

def to_json: (?untyped options) -> String

ImageBlock

A standalone image with alternative text and an optional title.

See the Slack reference.

.new

Construct an immutable, validated value with keyword arguments. Required keywords: alt_text.

def self.new: (?image_url: (String)?, ?slack_file: (SlackFile)?, alt_text: String, ?title: (String | PlainText)?, ?block_id: (String)?, ?additional_fields: Hash[String | Symbol, untyped]?) -> ImageBlock

Parameter	Description
image_url	Sets the publicly accessible URL of the image. Cannot be combined with a Slack file.
slack_file	Sets a file hosted in Slack as the image source. Cannot be combined with an image URL.
alt_text	Sets a plain-text summary of the image or video for assistive technology.
title	Sets the title shown above the image.
block_id	Sets a unique identifier for this block. Slack returns it in interaction payloads, so use a stable value when you need to find the block again.
additional_fields	JSON-compatible extension fields that do not replace modeled wire keys.

Returns: ImageBlock

Throws	When
ValidationError	A field or cross-field Slack rule fails.

Related types: ImageBlock, PlainText, SlackFile

.[]

Keyword-only alias for .new.

def self.[]: (?image_url: (String)?, ?slack_file: (SlackFile)?, alt_text: String, ?title: (String | PlainText)?, ?block_id: (String)?, ?additional_fields: Hash[String | Symbol, untyped]?) -> ImageBlock

Returns: ImageBlock

Related types: ImageBlock, PlainText, SlackFile

image_url

Sets the publicly accessible URL of the image. Cannot be combined with a Slack file. Wire key: image_url.

def image_url: () -> (String)?

Returns: (String)?

slack_file

Sets a file hosted in Slack as the image source. Cannot be combined with an image URL. Wire key: slack_file.

def slack_file: () -> (SlackFile)?

Returns: (SlackFile)?

Related types: SlackFile

alt_text

Sets a plain-text summary of the image or video for assistive technology. Wire key: alt_text.

def alt_text: () -> String

Returns: String

title

Sets the title shown above the image. Wire key: title.

def title: () -> (PlainText)?

Returns: (PlainText)?

Related types: PlainText

block_id

Sets a unique identifier for this block. Slack returns it in interaction payloads, so use a stable value when you need to find the block again. Wire key: block_id.

def block_id: () -> (String)?

Returns: (String)?

additional_fields

Return frozen extension fields with normalized string keys.

def additional_fields: () -> Hash[String, untyped]

with

Return a newly validated value with changed keywords.

def with: (**untyped changes) -> ImageBlock

Returns: ImageBlock

Related types: ImageBlock

to_h

Return structural Ruby members, including additional_fields. Nested members remain frozen.

def to_h: () -> Hash[Symbol, untyped]

as_json

Return a fresh, detached Slack wire Hash.

def as_json: (?untyped options) -> Hash[String, untyped]

to_json

Encode the Slack wire payload as JSON.

def to_json: (?untyped options) -> String

InputBlock

A labelled input that collects a value in a modal, App Home, or message.

See the Slack reference.

.new

Construct an immutable, validated value with keyword arguments. Required keywords: label, element.

def self.new: (label: String | PlainText, element: InputElement, ?dispatch_action: (bool)?, ?block_id: (String)?, ?hint: (String | PlainText)?, ?optional: (bool)?, ?additional_fields: Hash[String | Symbol, untyped]?) -> InputBlock

Parameter	Description
label	Sets the label shown above the input.
element	Sets the input element that collects the user's value.
dispatch_action	Sets whether changing the element sends a block_actions payload immediately.
block_id	Sets a unique identifier for this block. Slack returns it in interaction payloads, so use a stable value when you need to find the block again.
hint	Sets helper text shown below the input.
optional	Sets whether the modal can be submitted when this input is empty.
additional_fields	JSON-compatible extension fields that do not replace modeled wire keys.

Returns: InputBlock

Throws	When
ValidationError	A field or cross-field Slack rule fails.

Related types: InputBlock, InputElement, PlainText

.[]

Keyword-only alias for .new.

def self.[]: (label: String | PlainText, element: InputElement, ?dispatch_action: (bool)?, ?block_id: (String)?, ?hint: (String | PlainText)?, ?optional: (bool)?, ?additional_fields: Hash[String | Symbol, untyped]?) -> InputBlock

Returns: InputBlock

Related types: InputBlock, InputElement, PlainText

label

Sets the label shown above the input. Wire key: label.

def label: () -> PlainText

Returns: PlainText

Related types: PlainText

element

Sets the input element that collects the user's value. Wire key: element.

def element: () -> InputElement

Returns: InputElement

Related types: InputElement

dispatch_action

Sets whether changing the element sends a block_actions payload immediately. Wire key: dispatch_action.

def dispatch_action: () -> (bool)?

Returns: (bool)?

block_id

Sets a unique identifier for this block. Slack returns it in interaction payloads, so use a stable value when you need to find the block again. Wire key: block_id.

def block_id: () -> (String)?

Returns: (String)?

hint

Sets helper text shown below the input. Wire key: hint.

def hint: () -> (PlainText)?

Returns: (PlainText)?

Related types: PlainText

optional

Sets whether the modal can be submitted when this input is empty. Wire key: optional.

def optional: () -> (bool)?

Returns: (bool)?

additional_fields

Return frozen extension fields with normalized string keys.

def additional_fields: () -> Hash[String, untyped]

with

Return a newly validated value with changed keywords.

def with: (**untyped changes) -> InputBlock

Returns: InputBlock

Related types: InputBlock

to_h

Return structural Ruby members, including additional_fields. Nested members remain frozen.

def to_h: () -> Hash[Symbol, untyped]

as_json

Return a fresh, detached Slack wire Hash.

def as_json: (?untyped options) -> Hash[String, untyped]

to_json

Encode the Slack wire payload as JSON.

def to_json: (?untyped options) -> String

LayoutAlignment

Direction-aware alignment within a layout item. Omit for fill behavior. Pass the wire symbol to constructor keywords.

Constant	Slack value	Meaning
START	:start	Align to the leading edge.
CENTER	:center	Center the content.
END	:end	Align to the trailing edge.

LayoutBlock

A visual grid of one to five rows on messages, modals, and App Home. Supply fallback content for older clients.

See the Slack reference.

.new

Construct an immutable, validated value with keyword arguments. Required keywords: label, rows.

def self.new: (label: String, rows: Array[LayoutRow], ?is_label_visible: (bool)?, ?grid_lines: (:none | :rows | :outer)?, ?fallback: (Array[LayoutFallback])?, ?block_id: (String)?, ?additional_fields: Hash[String | Symbol, untyped]?) -> LayoutBlock

Parameter	Description
label	Describes the layout. A visible label is bold text, not a semantic heading.
rows	Adds one to five rows in source and reading order.
is_label_visible	Shows the label above the grid. Slack defaults to false; hidden labels are not exposed to screen readers.
grid_lines	Sets outer borders and horizontal row dividers. Slack defaults to none; there are no vertical dividers.
fallback	Adds stable blocks rendered in place of the layout on older clients. Omission is allowed; Slack normalizes it to an empty array and does not synthesize content.
block_id	Sets a unique identifier for this block. Slack returns it in interaction payloads, so use a stable value when you need to find the block again.
additional_fields	JSON-compatible extension fields that do not replace modeled wire keys.

Returns: LayoutBlock

Throws	When
ValidationError	A field or cross-field Slack rule fails.

Related types: LayoutBlock, LayoutFallback, LayoutRow

.[]

Keyword-only alias for .new.

def self.[]: (label: String, rows: Array[LayoutRow], ?is_label_visible: (bool)?, ?grid_lines: (:none | :rows | :outer)?, ?fallback: (Array[LayoutFallback])?, ?block_id: (String)?, ?additional_fields: Hash[String | Symbol, untyped]?) -> LayoutBlock

Returns: LayoutBlock

Related types: LayoutBlock, LayoutFallback, LayoutRow

label

Describes the layout. A visible label is bold text, not a semantic heading. Wire key: label.

def label: () -> String

Returns: String

rows

Adds one to five rows in source and reading order. Wire key: rows.

def rows: () -> Array[LayoutRow]

Returns: Array[LayoutRow]

Related types: LayoutRow

is_label_visible

Shows the label above the grid. Slack defaults to false; hidden labels are not exposed to screen readers. Wire key: is_label_visible.

def is_label_visible: () -> (bool)?

Returns: (bool)?

grid_lines

Sets outer borders and horizontal row dividers. Slack defaults to none; there are no vertical dividers. Wire key: grid_lines.

def grid_lines: () -> (:none | :rows | :outer)?

Returns: (:none | :rows | :outer)?

fallback

Adds stable blocks rendered in place of the layout on older clients. Omission is allowed; Slack normalizes it to an empty array and does not synthesize content. Wire key: fallback.

def fallback: () -> (Array[LayoutFallback])?

Returns: (Array[LayoutFallback])?

Related types: LayoutFallback

block_id

Sets a unique identifier for this block. Slack returns it in interaction payloads, so use a stable value when you need to find the block again. Wire key: block_id.

def block_id: () -> (String)?

Returns: (String)?

additional_fields

Return frozen extension fields with normalized string keys.

def additional_fields: () -> Hash[String, untyped]

with

Return a newly validated value with changed keywords.

def with: (**untyped changes) -> LayoutBlock

Returns: LayoutBlock

Related types: LayoutBlock

to_h

Return structural Ruby members, including additional_fields. Nested members remain frozen.

def to_h: () -> Hash[Symbol, untyped]

as_json

Return a fresh, detached Slack wire Hash.

def as_json: (?untyped options) -> Hash[String, untyped]

to_json

Encode the Slack wire payload as JSON.

def to_json: (?untyped options) -> String

LayoutChild

A block that can occupy a layout item; it must also be valid on the enclosing surface.

LayoutFallback

A stable block that older clients render in place of a layout.

LayoutGridLines

Layout borders: none, outer border with horizontal row dividers, or outer border only. Pass the wire symbol to constructor keywords.

Constant	Slack value	Meaning
NONE	:none	No borders (the default).
ROWS	:rows	Outer border and horizontal row dividers.
OUTER	:outer	Outer border only.

LayoutWidth

Relative layout item weights: narrow is 1, standard is 2, and wide is 3. Pass the wire symbol to constructor keywords.

Constant	Slack value	Meaning
NARROW	:narrow	Weight 1.
STANDARD	:standard	Weight 2 (the default).
WIDE	:wide	Weight 3.

MarkdownBlock

Standard markdown rendered by Slack, intended for AI-generated content.

See the Slack reference.

.new

Construct an immutable, validated value with keyword arguments. Required keywords: text.

def self.new: (text: String, ?block_id: (String)?, ?additional_fields: Hash[String | Symbol, untyped]?) -> MarkdownBlock

Parameter	Description
text	Sets standard markdown content, which Slack renders directly.
block_id	Sets a unique identifier for this block. Slack returns it in interaction payloads, so use a stable value when you need to find the block again.
additional_fields	JSON-compatible extension fields that do not replace modeled wire keys.

Returns: MarkdownBlock

Throws	When
ValidationError	A field or cross-field Slack rule fails.

Related types: MarkdownBlock

.[]

Keyword-only alias for .new.

def self.[]: (text: String, ?block_id: (String)?, ?additional_fields: Hash[String | Symbol, untyped]?) -> MarkdownBlock

Returns: MarkdownBlock

Related types: MarkdownBlock

text

Sets standard markdown content, which Slack renders directly. Wire key: text.

def text: () -> String

Returns: String

block_id

Sets a unique identifier for this block. Slack returns it in interaction payloads, so use a stable value when you need to find the block again. Wire key: block_id.

def block_id: () -> (String)?

Returns: (String)?

additional_fields

Return frozen extension fields with normalized string keys.

def additional_fields: () -> Hash[String, untyped]

with

Return a newly validated value with changed keywords.

def with: (**untyped changes) -> MarkdownBlock

Returns: MarkdownBlock

Related types: MarkdownBlock

to_h

Return structural Ruby members, including additional_fields. Nested members remain frozen.

def to_h: () -> Hash[Symbol, untyped]

as_json

Return a fresh, detached Slack wire Hash.

def as_json: (?untyped options) -> Hash[String, untyped]

to_json

Encode the Slack wire payload as JSON.

def to_json: (?untyped options) -> String

PlanBlock

A titled sequence of task cards.

See the Slack reference.

.new

Construct an immutable, validated value with keyword arguments. Required keywords: title, tasks.

def self.new: (title: String, tasks: Array[TaskCardBlock], ?block_id: (String)?, ?additional_fields: Hash[String | Symbol, untyped]?) -> PlanBlock

Parameter	Description
title	Sets the plan title.
tasks	Adds task cards in display order.
block_id	Sets a unique identifier for this block. Slack returns it in interaction payloads, so use a stable value when you need to find the block again.
additional_fields	JSON-compatible extension fields that do not replace modeled wire keys.

Returns: PlanBlock

Throws	When
ValidationError	A field or cross-field Slack rule fails.

Related types: PlanBlock, TaskCardBlock

.[]

Keyword-only alias for .new.

def self.[]: (title: String, tasks: Array[TaskCardBlock], ?block_id: (String)?, ?additional_fields: Hash[String | Symbol, untyped]?) -> PlanBlock

Returns: PlanBlock

Related types: PlanBlock, TaskCardBlock

title

Sets the plan title. Wire key: title.

def title: () -> String

Returns: String

tasks

Adds task cards in display order. Wire key: tasks.

def tasks: () -> Array[TaskCardBlock]

Returns: Array[TaskCardBlock]

Related types: TaskCardBlock

block_id

Sets a unique identifier for this block. Slack returns it in interaction payloads, so use a stable value when you need to find the block again. Wire key: block_id.

def block_id: () -> (String)?

Returns: (String)?

additional_fields

Return frozen extension fields with normalized string keys.

def additional_fields: () -> Hash[String, untyped]

with

Return a newly validated value with changed keywords.

def with: (**untyped changes) -> PlanBlock

Returns: PlanBlock

Related types: PlanBlock

to_h

Return structural Ruby members, including additional_fields. Nested members remain frozen.

def to_h: () -> Hash[Symbol, untyped]

as_json

Return a fresh, detached Slack wire Hash.

def as_json: (?untyped options) -> Hash[String, untyped]

to_json

Encode the Slack wire payload as JSON.

def to_json: (?untyped options) -> String

RichTextBlock

Formatted text built from sections, lists, preformatted blocks, and quotes.

See the Slack reference.

.new

Construct an immutable, validated value with keyword arguments. Required keywords: elements.

def self.new: (elements: Array[RichTextBlockElement], ?block_id: (String)?, ?additional_fields: Hash[String | Symbol, untyped]?) -> RichTextBlock

Parameter	Description
elements	Adds sections, lists, preformatted blocks, and quotes in display order.
block_id	Sets a unique identifier for this block. Slack returns it in interaction payloads, so use a stable value when you need to find the block again.
additional_fields	JSON-compatible extension fields that do not replace modeled wire keys.

Returns: RichTextBlock

Throws	When
ValidationError	A field or cross-field Slack rule fails.

Related types: RichTextBlock, RichTextBlockElement

.[]

Keyword-only alias for .new.

def self.[]: (elements: Array[RichTextBlockElement], ?block_id: (String)?, ?additional_fields: Hash[String | Symbol, untyped]?) -> RichTextBlock

Returns: RichTextBlock

Related types: RichTextBlock, RichTextBlockElement

elements

Adds sections, lists, preformatted blocks, and quotes in display order. Wire key: elements.

def elements: () -> Array[RichTextBlockElement]

Returns: Array[RichTextBlockElement]

Related types: RichTextBlockElement

block_id

Sets a unique identifier for this block. Slack returns it in interaction payloads, so use a stable value when you need to find the block again. Wire key: block_id.

def block_id: () -> (String)?

Returns: (String)?

additional_fields

Return frozen extension fields with normalized string keys.

def additional_fields: () -> Hash[String, untyped]

with

Return a newly validated value with changed keywords.

def with: (**untyped changes) -> RichTextBlock

Returns: RichTextBlock

Related types: RichTextBlock

to_h

Return structural Ruby members, including additional_fields. Nested members remain frozen.

def to_h: () -> Hash[Symbol, untyped]

as_json

Return a fresh, detached Slack wire Hash.

def as_json: (?untyped options) -> Hash[String, untyped]

to_json

Encode the Slack wire payload as JSON.

def to_json: (?untyped options) -> String

SectionBlock

Text, a grid of fields, or both, with an optional accessory element.

See the Slack reference.

.new

Construct an immutable, validated value with keyword arguments.

def self.new: (?text: (String | Text)?, ?fields: (Array[String | Text])?, ?accessory: (Element)?, ?block_id: (String)?, ?additional_fields: Hash[String | Symbol, untyped]?) -> SectionBlock

Parameter	Description
text	Sets the main text of the section.
fields	Adds section fields, shown in a two-column grid, in display order.
accessory	Sets the element displayed beside the section text.
block_id	Sets a unique identifier for this block. Slack returns it in interaction payloads, so use a stable value when you need to find the block again.
additional_fields	JSON-compatible extension fields that do not replace modeled wire keys.

Returns: SectionBlock

Throws	When
ValidationError	A field or cross-field Slack rule fails.

Related types: Element, SectionBlock, Text

.[]

Keyword-only alias for .new.

def self.[]: (?text: (String | Text)?, ?fields: (Array[String | Text])?, ?accessory: (Element)?, ?block_id: (String)?, ?additional_fields: Hash[String | Symbol, untyped]?) -> SectionBlock

Returns: SectionBlock

Related types: Element, SectionBlock, Text

text

Sets the main text of the section. Wire key: text.

def text: () -> (Text)?

Returns: (Text)?

Related types: Text

fields

Adds section fields, shown in a two-column grid, in display order. Wire key: fields.

def fields: () -> (Array[Text])?

Returns: (Array[Text])?

Related types: Text

accessory

Sets the element displayed beside the section text. Wire key: accessory.

def accessory: () -> (Element)?

Returns: (Element)?

Related types: Element

block_id

Sets a unique identifier for this block. Slack returns it in interaction payloads, so use a stable value when you need to find the block again. Wire key: block_id.

def block_id: () -> (String)?

Returns: (String)?

additional_fields

Return frozen extension fields with normalized string keys.

def additional_fields: () -> Hash[String, untyped]

with

Return a newly validated value with changed keywords.

def with: (**untyped changes) -> SectionBlock

Returns: SectionBlock

Related types: SectionBlock

to_h

Return structural Ruby members, including additional_fields. Nested members remain frozen.

def to_h: () -> Hash[Symbol, untyped]

as_json

Return a fresh, detached Slack wire Hash.

def as_json: (?untyped options) -> Hash[String, untyped]

to_json

Encode the Slack wire payload as JSON.

def to_json: (?untyped options) -> String

TableBlock

A simple table of raw text and rich text cells.

See the Slack reference.

.new

Construct an immutable, validated value with keyword arguments. Required keywords: rows.

def self.new: (rows: Array[Array[TableCell]], ?column_settings: (Array[ColumnSettings])?, ?block_id: (String)?, ?additional_fields: Hash[String | Symbol, untyped]?) -> TableBlock

Parameter	Description
rows	Adds complete table rows in display order.
column_settings	Adds per-column settings in column order. Provide one entry for every column.
block_id	Sets a unique identifier for this block. Slack returns it in interaction payloads, so use a stable value when you need to find the block again.
additional_fields	JSON-compatible extension fields that do not replace modeled wire keys.

Returns: TableBlock

Throws	When
ValidationError	A field or cross-field Slack rule fails.

Related types: ColumnSettings, TableBlock, TableCell

.[]

Keyword-only alias for .new.

def self.[]: (rows: Array[Array[TableCell]], ?column_settings: (Array[ColumnSettings])?, ?block_id: (String)?, ?additional_fields: Hash[String | Symbol, untyped]?) -> TableBlock

Returns: TableBlock

Related types: ColumnSettings, TableBlock, TableCell

rows

Adds complete table rows in display order. Wire key: rows.

def rows: () -> Array[Array[TableCell]]

Returns: Array[Array[TableCell]]

Related types: TableCell

column_settings

Adds per-column settings in column order. Provide one entry for every column. Wire key: column_settings.

def column_settings: () -> (Array[ColumnSettings])?

Returns: (Array[ColumnSettings])?

Related types: ColumnSettings

block_id

Sets a unique identifier for this block. Slack returns it in interaction payloads, so use a stable value when you need to find the block again. Wire key: block_id.

def block_id: () -> (String)?

Returns: (String)?

additional_fields

Return frozen extension fields with normalized string keys.

def additional_fields: () -> Hash[String, untyped]

with

Return a newly validated value with changed keywords.

def with: (**untyped changes) -> TableBlock

Returns: TableBlock

Related types: TableBlock

to_h

Return structural Ruby members, including additional_fields. Nested members remain frozen.

def to_h: () -> Hash[Symbol, untyped]

as_json

Return a fresh, detached Slack wire Hash.

def as_json: (?untyped options) -> Hash[String, untyped]

to_json

Encode the Slack wire payload as JSON.

def to_json: (?untyped options) -> String

TableCell

A value that can appear as a table block cell: raw text or a rich text block.

TaskCardBlock

One task with its status, details, output, and sources.

See the Slack reference.

.new

Construct an immutable, validated value with keyword arguments. Required keywords: task_id, title, status.

def self.new: (task_id: String, title: String, ?details: (RichTextBlock)?, ?output: (RichTextBlock)?, ?sources: (Array[UrlSource])?, status: :pending | :in_progress | :complete | :error, ?block_id: (String)?, ?additional_fields: Hash[String | Symbol, untyped]?) -> TaskCardBlock

Parameter	Description
task_id	Sets the identifier of the task.
title	Sets the task title.
details	Sets a rich text description of the task.
output	Sets rich text describing the task's output.
sources	Adds links to the sources the task used, in display order.
status	Sets the task's current state.
block_id	Sets a unique identifier for this block. Slack returns it in interaction payloads, so use a stable value when you need to find the block again.
additional_fields	JSON-compatible extension fields that do not replace modeled wire keys.

Returns: TaskCardBlock

Throws	When
ValidationError	A field or cross-field Slack rule fails.

Related types: RichTextBlock, TaskCardBlock, UrlSource

.[]

Keyword-only alias for .new.

def self.[]: (task_id: String, title: String, ?details: (RichTextBlock)?, ?output: (RichTextBlock)?, ?sources: (Array[UrlSource])?, status: :pending | :in_progress | :complete | :error, ?block_id: (String)?, ?additional_fields: Hash[String | Symbol, untyped]?) -> TaskCardBlock

Returns: TaskCardBlock

Related types: RichTextBlock, TaskCardBlock, UrlSource

task_id

Sets the identifier of the task. Wire key: task_id.

def task_id: () -> String

Returns: String

title

Sets the task title. Wire key: title.

def title: () -> String

Returns: String

details

Sets a rich text description of the task. Wire key: details.

def details: () -> (RichTextBlock)?

Returns: (RichTextBlock)?

Related types: RichTextBlock

output

Sets rich text describing the task's output. Wire key: output.

def output: () -> (RichTextBlock)?

Returns: (RichTextBlock)?

Related types: RichTextBlock

sources

Adds links to the sources the task used, in display order. Wire key: sources.

def sources: () -> (Array[UrlSource])?

Returns: (Array[UrlSource])?

Related types: UrlSource

status

Sets the task's current state. Wire key: status.

def status: () -> :pending | :in_progress | :complete | :error

Returns: :pending | :in_progress | :complete | :error

block_id

Sets a unique identifier for this block. Slack returns it in interaction payloads, so use a stable value when you need to find the block again. Wire key: block_id.

def block_id: () -> (String)?

Returns: (String)?

additional_fields

Return frozen extension fields with normalized string keys.

def additional_fields: () -> Hash[String, untyped]

with

Return a newly validated value with changed keywords.

def with: (**untyped changes) -> TaskCardBlock

Returns: TaskCardBlock

Related types: TaskCardBlock

to_h

Return structural Ruby members, including additional_fields. Nested members remain frozen.

def to_h: () -> Hash[Symbol, untyped]

as_json

Return a fresh, detached Slack wire Hash.

def as_json: (?untyped options) -> Hash[String, untyped]

to_json

Encode the Slack wire payload as JSON.

def to_json: (?untyped options) -> String

TaskStatus

States supported by task card blocks. Pass the wire symbol to constructor keywords.

Constant	Slack value	Meaning
PENDING	:pending	The task has not started.
IN_PROGRESS	:in_progress	The task is running.
COMPLETE	:complete	The task finished successfully.
ERROR	:error	The task failed.

VideoBlock

An embedded video player.

See the Slack reference.

.new

Construct an immutable, validated value with keyword arguments. Required keywords: alt_text, thumbnail_url, title, video_url.

def self.new: (alt_text: String, thumbnail_url: String, title: String | PlainText, video_url: String, ?block_id: (String)?, ?author_name: (String)?, ?description: (String | PlainText)?, ?provider_icon_url: (String)?, ?provider_name: (String)?, ?title_url: (String)?, ?additional_fields: Hash[String | Symbol, untyped]?) -> VideoBlock

Parameter	Description
alt_text	Sets a plain-text summary of the image or video for assistive technology.
thumbnail_url	Sets the URL of the image shown before the video plays.
title	Sets the video title.
video_url	Sets the embeddable URL of the video. The domain must be listed in the app's unfurl domains.
block_id	Sets a unique identifier for this block. Slack returns it in interaction payloads, so use a stable value when you need to find the block again.
author_name	Sets the name of the video's author.
description	Sets the video description.
provider_icon_url	Sets the URL of the video provider's icon.
provider_name	Sets the name of the video provider, such as YouTube.
title_url	Sets the HTTPS URL opened when the title is clicked.
additional_fields	JSON-compatible extension fields that do not replace modeled wire keys.

Returns: VideoBlock

Throws	When
ValidationError	A field or cross-field Slack rule fails.

Related types: PlainText, VideoBlock

.[]

Keyword-only alias for .new.

def self.[]: (alt_text: String, thumbnail_url: String, title: String | PlainText, video_url: String, ?block_id: (String)?, ?author_name: (String)?, ?description: (String | PlainText)?, ?provider_icon_url: (String)?, ?provider_name: (String)?, ?title_url: (String)?, ?additional_fields: Hash[String | Symbol, untyped]?) -> VideoBlock

Returns: VideoBlock

Related types: PlainText, VideoBlock

alt_text

Sets a plain-text summary of the image or video for assistive technology. Wire key: alt_text.

def alt_text: () -> String

Returns: String

thumbnail_url

Sets the URL of the image shown before the video plays. Wire key: thumbnail_url.

def thumbnail_url: () -> String

Returns: String

title

Sets the video title. Wire key: title.

def title: () -> PlainText

Returns: PlainText

Related types: PlainText

video_url

Sets the embeddable URL of the video. The domain must be listed in the app's unfurl domains. Wire key: video_url.

def video_url: () -> String

Returns: String

block_id

Sets a unique identifier for this block. Slack returns it in interaction payloads, so use a stable value when you need to find the block again. Wire key: block_id.

def block_id: () -> (String)?

Returns: (String)?

author_name

Sets the name of the video's author. Wire key: author_name.

def author_name: () -> (String)?

Returns: (String)?

description

Sets the video description. Wire key: description.

def description: () -> (PlainText)?

Returns: (PlainText)?

Related types: PlainText

provider_icon_url

Sets the URL of the video provider's icon. Wire key: provider_icon_url.

def provider_icon_url: () -> (String)?

Returns: (String)?

provider_name

Sets the name of the video provider, such as YouTube. Wire key: provider_name.

def provider_name: () -> (String)?

Returns: (String)?

title_url

Sets the HTTPS URL opened when the title is clicked. Wire key: title_url.

def title_url: () -> (String)?

Returns: (String)?

additional_fields

Return frozen extension fields with normalized string keys.

def additional_fields: () -> Hash[String, untyped]

with

Return a newly validated value with changed keywords.

def with: (**untyped changes) -> VideoBlock

Returns: VideoBlock

Related types: VideoBlock

to_h

Return structural Ruby members, including additional_fields. Nested members remain frozen.

def to_h: () -> Hash[Symbol, untyped]

as_json

Return a fresh, detached Slack wire Hash.

def as_json: (?untyped options) -> Hash[String, untyped]

to_json

Encode the Slack wire payload as JSON.

def to_json: (?untyped options) -> String