# Slack (MCP Server)

> Search, read, and post Slack messages, threads, and canvases

- Type: MCP server
- Publisher: Slack (official)
- Categories: Communication, Productivity
- Website: https://docs.slack.dev/ai/slack-mcp-server
- Transport: streamable-http
- Server URL: https://mcp.slack.com/mcp
- Sign-in: oauth
- Listed: 2025-10-01

## About

Slack's official MCP server lets AI clients search messages and channels, read threads and user profiles, send or schedule messages, and create or update canvases. It runs over streamable HTTP with confidential OAuth 2.0 and requires a registered Slack app; partner clients include Claude, Cursor, and Perplexity.

## Install

1. **Connect it in ChatGPT** Turn on Developer mode in ChatGPT (Settings → Security and login), open Plugins, select + and paste https://mcp.slack.com/mcp as the MCP server URL, then sign in with OAuth. Add it to a chat from the composer's tools menu.

2. **Or add it to Codex or the API**

   Codex CLI:

   ```bash
   codex mcp add slack --url https://mcp.slack.com/mcp
   codex mcp login slack
   ```

   config.toml:

   ```toml
   [mcp_servers.slack]
   url = "https://mcp.slack.com/mcp"
   ```

   Responses API:

   ```python
   import os
   from openai import OpenAI
   
   client = OpenAI()
   
   response = client.responses.create(
       model="gpt-6-astra",
       tools=[{
           "type": "mcp",
           "server_label": "slack",
           "server_url": "https://mcp.slack.com/mcp",
           "authorization": os.environ["SLACK_API_KEY"],
           "require_approval": "never",
       }],
       input="Summarize what happened in #eng-incidents today",
   )
   print(response.output_text)
   ```

## Tools

- `slack_search_public`
- `slack_search_public_and_private`
- `slack_search_channels`
- `slack_search_users`
- `slack_read_channel`
- `slack_read_thread`
- `slack_read_user_profile`
- `slack_send_message`
- `slack_schedule_message`
- `slack_create_canvas`
- `slack_read_canvas`
- `slack_update_canvas`

## Example prompts

- "Summarize what happened in #eng-incidents today"
- "Find the thread where we decided on the pricing change"
- "Send a message to #launch saying the release is live"
- "Create a canvas with the agenda for tomorrow's standup"

## Also available as

- plugin: [Slack](https://chatgptplugins.directory/plugins/slack.md)
- app: [Slack](https://chatgptplugins.directory/apps/slack.md)

## Related

- [Notion](https://chatgptplugins.directory/mcp/notion.md): Search, read, and write Notion pages, databases, and comments via hosted MCP
- [Excalidraw](https://chatgptplugins.directory/mcp/excalidraw.md): Draw hand-drawn Excalidraw diagrams live inside ChatGPT, Claude and VS Code
- [Atlassian Rovo (Jira & Confluence)](https://chatgptplugins.directory/mcp/atlassian-rovo.md): Work with Jira issues and Confluence pages through Atlassian's hosted MCP
- [Browser Use](https://chatgptplugins.directory/mcp/browser-use.md): Run Browser Use cloud browser agents or control a local browser over MCP
- [Filesystem](https://chatgptplugins.directory/mcp/filesystem.md): Secure local file operations with configurable directory access
- [Memory](https://chatgptplugins.directory/mcp/memory.md): Knowledge graph-based persistent memory across conversations

---
Source: https://chatgptplugins.directory/mcp/slack · Index: https://chatgptplugins.directory/llms.txt · Independent and community-run. Not affiliated with or endorsed by OpenAI. ChatGPT is a trademark of OpenAI.