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AppsSlack ToolsSlack Updates A Slack Message
Slack Tools

Slack Updates A Slack Message

Updates a Slack message by timestamp. Provide exactly one visible content mode: `markdown_text` for normal Markdown content, or `blocks` for raw Slack Block Kit layouts. Use `fallback_text` only with `blocks`; it maps to Slack's top-level `text` fallback.

Write actionRisk level 2 of 5OAuth connection
Use Slack Updates A Slack Message

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Pricing
Free
Unified payment
Not currently supported

Inputs

  • tsstring
    Required
    Timestamp of the message to update (string, Unix time with microseconds, e.g., `'1234567890.123456'`).
  • blocksarray
    Use this instead of `markdown_text` only when updating to Slack Block Kit capabilities that Markdown cannot express: buttons, approval/reject actions, select menus, checkboxes, radio buttons, date/time pickers, overflow menus, interactive workflow payloads, section accessories,…
  • as_userboolean
    Pass `true` to update the message as the authenticated user; applicable to bot users as well.
  • channelstring
    Required
    ID or name of the channel, private group, or IM channel containing the message to update. Can be specified as either 'channel' or 'channel_id'. Do NOT include the '#' prefix (e.g., use 'general' not '#general') - any leading '#' will be automatically stripped.
  • file_idsarray
    Array of file IDs to attach to the updated message. Files must already be uploaded to Slack.
  • metadataobject
    JSON object containing `event_type` (string) and `event_payload` (dict) fields for adding custom metadata to the message.
  • fallback_textstring
    Optional only when using `blocks`. Maps to Slack's top-level `text` field for notifications, accessibility, search previews, and clients that cannot render blocks. This should be a short plain-text summary of the block content, not another visible message body. Omit it if you wa…
  • markdown_textstring
    Use this for normal LLM-written updated message content. Pass standard Markdown exactly as written; this tool sends it to Slack's native `markdown_text` argument without converting it to blocks. Do not use this together with `blocks`. Supports Slack's native markdown handling fo…
  • reply_broadcastboolean
    If `true` and the message is a thread reply, broadcast the updated message to the channel. Defaults to `false`.

Observable output

  • data
    Required
    Data from the action execution
  • errorstring
    Error if any occurred during the execution of the action
  • successfulboolean
    Required
    Whether or not the action execution was successful or not

Skills that use this Action

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Skills that use this Action

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