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Slack

Connect to the Slack Web API to manage channels, messages, users, reactions, and more.

Prerequisites

  • A Slack workspace
  • A Bot token (xoxb-...) or User token (xoxp-...)

Configuration

{
  "mcpServers": {
    "slack": {
      "command": "npx",
      "args": [
        "-y",
        "anyapi-mcp-server",
        "--name", "slack",
        "--spec", "https://raw.githubusercontent.com/slackapi/slack-api-specs/master/web-api/slack_web_openapi_v2.json",
        "--base-url", "https://slack.com/api",
        "--header", "Authorization: Bearer ${SLACK_TOKEN}"
      ],
      "env": {
        "SLACK_TOKEN": "xoxb-your-bot-token"
      }
    }
  }
}

Notes

  • Bot tokens (xoxb-) are recommended. User tokens (xoxp-) give broader access but are tied to a specific user.
  • The token's scopes determine which API methods are accessible. Common scopes: channels:read, chat:write, users:read.
  • The spec is sourced from Slack's official API specs repository.