Send Message

Send a message to a Slack channel

Use it in a workflow

Add a step and choose the Slack connector.
Pick the Send Message action (under slack).
Fill in the fields below, then reference the result from later steps as {{sendMessage.response.data}}.

Fields

channelstringrequired

Channel ID (e.g., C1234567890) or channel name (e.g., #general). Use # prefix for channel names.

textstring

Plain text message to send. Use this for simple messages, or use Blocks for rich formatting.

blocksstring

Slack Block Kit JSON for rich message formatting. Leave empty to use plain text.

threadTsstring

Timestamp of parent message to reply in a thread. Leave empty to send a new message.

usernamestring

Override the default bot username for this message. Leave empty to use bot's default name.

iconEmojistring

Override bot icon with an emoji (e.g., :robot_face:). Leave empty to use bot's default icon.

iconUrlstring

Override bot icon with a URL. Leave empty to use bot's default icon.

Examples

Simple Text Message

Send a plain text message to a channel

json

{
  "channel": "#general",
  "text": "Hello from API Orchestrator!"
}

Rich Formatting with Blocks

Send a formatted message using Slack Block Kit

json

{
  "channel": "#alerts",
  "blocks": "[\n  {\n    \"type\": \"header\",\n    \"text\": {\n      \"type\": \"plain_text\",\n      \"text\": \"Alert Notification\"\n    }\n  },\n  {\n    \"type\": \"section\",\n    \"text\": {\n      \"type\": \"mrkdwn\",\n      \"text\": \"*Status:* :warning: Warning\\n*Message:* Workflow execution failed\"\n    }\n  }\n]"
}

Reply in Thread

Reply to a message in a thread

json

{
  "channel": "#general",
  "text": "This is a reply in the thread",
  "threadTs": "1234567890.123456"
}

Need more? See the Slack guide for connection setup and behaviour shared by every action.

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