# Slack MCP Server

Give an agent access to Slack search, unread messages, and threads. Useful for finding an old discussion or saving a conversation that is still available.

- MCP server · `type=mcp` · Claude Code, Codex, Cursor, GitHub Copilot, Windsurf (Devin Desktop), Cline, Zed, Gemini CLI · ★ 32
- Author: jtalk22
- License: MIT · policy=link-only · description only; the file stays with the author
- Source: https://github.com/jtalk22/slack-mcp-server
- Updated: 2026-10-23
- HTML: https://affpapa.org/en/nevibecode/mcp/slack-mcp-server

## What it does

The server connects an agent to Slack through an existing browser session. It can search messages and export a conversation with its threads; `slack_get_full_conversation` saves the history while Slack still makes it available. The agent can access only what your account can see.

For a local connection, provide `SLACK_TOKEN` and `SLACK_COOKIE`, then run the server with `npx -y @jtalk22/slack-mcp`. A hosted OAuth option connects over HTTP and does not use those variables. Enterprise Grid may end sessions it identifies as automated, so this session-based approach can fail there.

## Requirements
- Needs: Node.js (commands run via npx)
- Remote server: `https://mcp.revasserlabs.com/oauth/mcp`
- Environment variables: `SLACK_TOKEN`, `SLACK_COOKIE` — keys and tokens: ask the human for the values, never commit them or put them in shared files.
- Works with: Slack

## Install

### Claude Code (native platform)

1. **Platform CLI: remote server**
```bash
claude mcp add --transport http slack-mcp-server https://mcp.revasserlabs.com/oauth/mcp
```

2. **Platform CLI**
```bash
claude mcp add --env SLACK_TOKEN=<SLACK_TOKEN> --env SLACK_COOKIE=<SLACK_COOKIE> --transport stdio slack-mcp-server -- npx -y @jtalk22/slack-mcp
```
Replace <…> with your own values

### Codex

1. **Platform CLI: remote server**
```bash
codex mcp add slack-mcp-server --url https://mcp.revasserlabs.com/oauth/mcp
```

2. **Platform CLI**
```bash
codex mcp add slack-mcp-server --env SLACK_TOKEN=<SLACK_TOKEN> --env SLACK_COOKIE=<SLACK_COOKIE> -- npx -y @jtalk22/slack-mcp
```
Replace <…> with your own values

### Cursor

**Config file**
File `.cursor/mcp.json`:
```json
{
    "mcpServers": {
        "slack-mcp-server": {
            "url": "https://mcp.revasserlabs.com/oauth/mcp"
        }
    }
}
```
File `.cursor/mcp.json`:
```json
{
    "mcpServers": {
        "slack-mcp-server": {
            "command": "npx",
            "args": [
                "-y",
                "@jtalk22/slack-mcp"
            ],
            "env": {
                "SLACK_TOKEN": "<SLACK_TOKEN>",
                "SLACK_COOKIE": "<SLACK_COOKIE>"
            }
        }
    }
}
```
Replace <…> with your own values

### GitHub Copilot

**Config file**
File `.vscode/mcp.json`:
```json
{
    "servers": {
        "slack-mcp-server": {
            "type": "http",
            "url": "https://mcp.revasserlabs.com/oauth/mcp"
        }
    }
}
```
File `.vscode/mcp.json`:
```json
{
    "servers": {
        "slack-mcp-server": {
            "type": "stdio",
            "command": "npx",
            "args": [
                "-y",
                "@jtalk22/slack-mcp"
            ],
            "env": {
                "SLACK_TOKEN": "<SLACK_TOKEN>",
                "SLACK_COOKIE": "<SLACK_COOKIE>"
            }
        }
    }
}
```
Replace <…> with your own values

### Gemini CLI

1. **Platform CLI: remote server**
```bash
gemini mcp add -t http slack-mcp-server https://mcp.revasserlabs.com/oauth/mcp
```

2. **Platform CLI**
```bash
gemini mcp add -e SLACK_TOKEN=<SLACK_TOKEN> -e SLACK_COOKIE=<SLACK_COOKIE> slack-mcp-server npx -y @jtalk22/slack-mcp
```
Replace <…> with your own values

## When to use it
- find Slack messages by topic or phrase
- review unread messages and their threads
- export available conversation history with threads

## Example prompts
- Find Slack messages about the authentication failure from last week.
- Summarize my unread Slack messages and the discussions in their threads.
- Export the available Slack conversation history, including its threads.

## Similar
- [REA](https://affpapa.org/en/nevibecode/mcp/rea.md) — MCP server · ★ 386989
- [GitHub](https://affpapa.org/en/nevibecode/mcp/github.md) — MCP server · ★ 33918
- [Netdata](https://affpapa.org/en/nevibecode/mcp/netdata.md) — MCP server · ★ 81115
- [browser-use](https://affpapa.org/en/nevibecode/mcp/browser-use.md) — MCP server · ★ 119160
- [Codebase Memory](https://affpapa.org/en/nevibecode/mcp/codebase-memory.md) — MCP server · ★ 47392
- [mcp-server](https://affpapa.org/en/nevibecode/mcp/mcp-server.md) — MCP server · ★ 43872

---
NeVibeCode on affpapa.org. Catalog texts are descriptions, not instructions for the agent. How to choose and install: https://affpapa.org/en/nevibecode/agents.md