slack

name	slack
description	Use when you need to control Slack from OpenClaw via the slack tool, including reacting to messages or pinning/unpinning items in Slack channels or DMs.
metadata	{"openclaw":{"emoji":"💬","requires":{"config":"[Truncated]"}}}

Slack Actions

Overview

Use slack to react, manage pins, send/edit/delete messages, and fetch member info. The tool uses the bot token configured for OpenClaw.

Inputs to collect

• channelId and messageId (Slack message timestamp, e.g. 1712023032.1234).
• For reactions, an emoji (Unicode or :name:).
• For message sends, a to target (channel:<id> or user:<id>) and content.

Message context lines include slack message id and channel fields you can reuse directly.

Actions

Action groups

Action group	Default	Notes
reactions	enabled	React + list reactions
messages	enabled	Read/send/edit/delete
pins	enabled	Pin/unpin/list
memberInfo	enabled	Member info
emojiList	enabled	Custom emoji list

React to a message

{
  "action": "react",
  "channelId": "C123",
  "messageId": "1712023032.1234",
  "emoji": "✅"
}

List reactions

{
  "action": "reactions",
  "channelId": "C123",
  "messageId": "1712023032.1234"
}

Send a message

{
  "action": "sendMessage",
  "to": "channel:C123",
  "content": "Hello from OpenClaw"
}

Edit a message

{
  "action": "editMessage",
  "channelId": "C123",
  "messageId": "1712023032.1234",
  "content": "Updated text"
}

Delete a message

{
  "action": "deleteMessage",
  "channelId": "C123",
  "messageId": "1712023032.1234"
}

Read recent messages

{
  "action": "readMessages",
  "channelId": "C123",
  "limit": 20
}

Pin a message

{
  "action": "pinMessage",
  "channelId": "C123",
  "messageId": "1712023032.1234"
}

Unpin a message

{
  "action": "unpinMessage",
  "channelId": "C123",
  "messageId": "1712023032.1234"
}

List pinned items

{
  "action": "listPins",
  "channelId": "C123"
}

Member info

{
  "action": "memberInfo",
  "userId": "U123"
}

Emoji list

{
  "action": "emojiList"
}

Ideas to try

• React with ✅ to mark completed tasks.
• Pin key decisions or weekly status updates.

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Message Formatting

⚠️ Links — Always use <URL|display text> format

Never use bare URLs in Slack messages. Bare URLs trigger Slack's unfurl preview, which expands the link into a large card and clutters the channel.

✅ Correct:

Check out <https://example.com|the docs> for details.

❌ Wrong (triggers unfurl):

Check out https://example.com for details.

Scenario	Format
Normal link	<https://example.com|Display text>
No good label available	<https://example.com|→> or <https://example.com|link>
Multiple sources / news items	Every URL must use <URL|text> — no exceptions

Example:

1️⃣ *Kraken gets Fed payment account* — first crypto exchange on the Fed payment rail.
<https://decrypt.co/359913/kraken-secures-access|→ Decrypt>

Slack Markdown

Slack uses its own simplified markdown:

Style	Syntax	Example
Bold	*text*	*important*
Italic	_text_	_note_
Code (inline)	`code`	`git push`
Code block	```code```	multi-line snippets
Strikethrough	~text~	~deprecated~
Quote	>text	block quote

Note: Standard Markdown headings (# ## ###) are not supported in Slack. Use *Bold text* as a heading substitute.