MCP 配置指南

如何为 OpenClaw 设置 Slack MCP

让 OpenClaw 读取 Slack 频道、总结讨论，并代表你发送消息。

Overview

The Slack MCP enables:

Read messages from specified channels
Summarize channel activity ("What happened in #engineering today?")
Send messages to channels
List channel members and metadata

Prerequisites

OpenClaw installed and running
Slack workspace (admin access for app installation)
Node.js 18+

Step 1 — Create a Slack App

Go to api.slack.com/apps
Click "Create New App" → "From scratch"
Name it (e.g., "OpenClaw MCP") and select your workspace

Step 2 — Configure Bot Scopes

Go to "OAuth & Permissions" and add these Bot Token Scopes:

channels:history — read public channel messages
channels:read — list channels
chat:write — send messages
users:read — get user info
groups:history — read private channels (if needed)

Step 3 — Enable Socket Mode

Go to "Socket Mode" in sidebar
Enable Socket Mode
Generate an App-Level Token with connections:write scope
Copy this token (starts with xapp-)

Step 4 — Install App to Workspace

Go to "Install App" in sidebar
Click "Install to Workspace"
Authorize the requested permissions
Copy the Bot User OAuth Token (starts with xoxb-)

Step 5 — Get IDs

Team ID: In Slack, click workspace name → Settings → Workspace settings → find ID starting with T
Channel IDs: Right-click channel → View channel details → scroll to bottom for ID starting with C

Step 6 — Add Config to OpenClaw

Slack CLI Config json

{
  "Slack": {
    "command": "npx",
    "args": ["-y", "@modelcontextprotocol/server-slack"],
    "env": {
      "SLACK_BOT_TOKEN": "xoxb-REPLACE-WITH-YOUR-TOKEN",
      "SLACK_APP_TOKEN": "xapp-REPLACE-WITH-YOUR-TOKEN",
      "SLACK_TEAM_ID": "T0123456789",
      "SLACK_CHANNEL_IDS": "C0123456789,C9876543210",
      "MCP_MODE": "stdio"
    }
  }
}

Important: Store tokens as environment variables, not plaintext in config.

Step 7 — Verify

Run openclaw status — Slack MCP should show as "running"
Test: "What's the latest message in #general?"
Test: "Summarize today's discussion in #engineering"

Common Errors

Error	Cause	Fix
`not_in_channel`	Bot not added to channel	Invite bot: `/invite @OpenClaw`
`invalid_auth`	Wrong or expired token	Regenerate Bot Token, update config
`missing_scope`	Required scope not added	Add scope in OAuth & Permissions, reinstall app
`channel_not_found`	Wrong channel ID	Verify channel ID in Slack settings

Security Notes

Limit to specific channels via SLACK_CHANNEL_IDS
Use read-only scopes if you don't need to send messages
Audit bot activity in Slack's admin panel
Enterprise workspaces may require admin approval

Example Prompts

"Summarize today's messages in #product"
"What did @alice say in #engineering this week?"
"Send 'Build complete!' to #deployments"
"List active threads in #support"