slack_post

Available in: Cloud, Self-Managed

License: This component requires an enterprise license. You can either upgrade to an Enterprise Edition license, or generate a trial license key that's valid for 30 days.

Posts a new message to a Slack channel using the Slack API method chat.postMessage.

Introduced in version 4.52.0.

# Common configuration fields, showing default values
output:
  label: ""
  slack_post:
    bot_token: "" # No default (required)
    channel_id: "" # No default (required)
    thread_ts: "" # No default (optional)
    text: "" # No default (optional)
    blocks: "" # No default (optional)
    markdown: true
    unfurl_links: false
    unfurl_media: true
    link_names: 0

See also: Examples

Fields

bot_token

Your Slack bot user’s OAuth token, which must have the correct permissions to post messages to the target Slack channel.

Type: string

channel_id

The encoded ID of the target Slack channel. This field supports interpolation functions.

Type: string

thread_ts

Specify the thread timestamp (ts value) of another message to post a reply within the same thread. This field supports interpolation functions.

Type: string

Default: ""

text

The text content of the message. This field supports interpolation functions.

You can either specify message content in the text or blocks fields, but not both.

Type: string

Default: ""

blocks

A Bloblang query that should return a JSON array of Slack blocks.

You can either specify message content in the text or blocks fields, but not both.

Type: string

markdown

When set to true, this output accepts message content in Markdown format.

Type: bool

Default: true

When set to true, this output provides previews of linked content in Slack messages. For more information about unfurling links, see the Slack documentation.

Type: bool

Default: false

unfurl_media

When set to true, this output provides previews of rich content in Slack messages, such as videos or embedded tweets.

Type: bool

Default: true

When set to 1, this output finds and links to user groups mentioned in Slack messages.

Type: bool

Default: 0

Examples

The following pipeline reposts messages created by a Slack app to the same thread in the same channel, adding ECHO: to the original message text. All hidden or non-message events, and any activity originating from the Slack bot, are excluded.

input:
  slack:
    app_token: "${APP_TOKEN:xapp-demo}"
    bot_token: "${BOT_TOKEN:xoxb-demo}"
pipeline:
  processors:
    # Ignore hidden or non-message events, and messages sent by the bot.
    - mutation: |
        if this.event.type != "message" || (this.event.hidden | false) {
          root = deleted()
        }
        if this.authorizations.any(auth -> auth.user_id == this.event.user) {
          root = deleted()
        }
output:
  slack_post:
    bot_token: "${BOT_TOKEN:xoxb-demo}"
    channel_id: "${!this.event.channel}"
    thread_ts: "${!this.event.ts}"
    text: "ECHO: ${!this.event.text}"