Communication
slack - Claude MCP Skill
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.
SEO Guide: Enhance your AI agent with the slack tool. This Model Context Protocol (MCP) server allows Claude Desktop and other LLMs to use when you need to control slack from openclaw via the slack tool, including reacting to messages ... Download and configure this skill to unlock new capabilities for your AI workflow.
Documentation
SKILL.md# 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
```json
{
"action": "react",
"channelId": "C123",
"messageId": "1712023032.1234",
"emoji": "✅"
}
```
### List reactions
```json
{
"action": "reactions",
"channelId": "C123",
"messageId": "1712023032.1234"
}
```
### Send a message
```json
{
"action": "sendMessage",
"to": "channel:C123",
"content": "Hello from OpenClaw"
}
```
### Edit a message
```json
{
"action": "editMessage",
"channelId": "C123",
"messageId": "1712023032.1234",
"content": "Updated text"
}
```
### Delete a message
```json
{
"action": "deleteMessage",
"channelId": "C123",
"messageId": "1712023032.1234"
}
```
### Read recent messages
```json
{
"action": "readMessages",
"channelId": "C123",
"limit": 20
}
```
### Pin a message
```json
{
"action": "pinMessage",
"channelId": "C123",
"messageId": "1712023032.1234"
}
```
### Unpin a message
```json
{
"action": "unpinMessage",
"channelId": "C123",
"messageId": "1712023032.1234"
}
```
### List pinned items
```json
{
"action": "listPins",
"channelId": "C123"
}
```
### Member info
```json
{
"action": "memberInfo",
"userId": "U123"
}
```
### Emoji list
```json
{
"action": "emojiList"
}
```
## Ideas to try
- React with ✅ to mark completed tasks.
- Pin key decisions or weekly status updates.Signals
Information
- Repository
- casibase/casibase
- Author
- casibase
- Last Sync
- 9/5/2026
- Repo Updated
- 9/4/2026
- Created
- 1/12/2026
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