# Slack

> Use when the agent needs to send, edit, delete, or read Slack messages, add or list emoji reactions, pin or unpin messages, fetch member info, or list custom emoji in Slack channels and DMs. Handles all Slack workspace interactions including message management, reaction workflows, pinned-item management, and user lookups via the configured bot token.

- Skill: `tomevault-io/slack` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add tomevault-io/slack`
- Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/slack/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: AI & ML
- Author: tomevault-io (https://skillmd.com/u/tomevault-io)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/tomevault-io/slack

---


# 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 Otto.

## 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 Otto"
}
```

### 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.

---
> Converted and distributed by [TomeVault](https://tomevault.io/claim/elizaos) — claim your Tome and manage your conversions.
<!-- tomevault:4.0:skill_md:2026-04-11 -->