Secure read-only MCP server for Slack workspaces
Valid MCP server (1 strong, 4 medium validity signals). 5 known CVEs in dependencies (1 critical, 3 high severity) Imported from the Official MCP Registry. 1 finding(s) downgraded by scanner intelligence.
12 files analyzed · 6 issues found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
This plugin requests these system permissions. Most are normal for its category.
Add this to your MCP configuration file:
{
"mcpServers": {
"io-github-crunchtools-slack": {
"args": [
"mcp-slack-crunchtools"
],
"command": "uvx"
}
}
}From the project's GitHub README.
Secure read-only MCP server for Slack workspaces. Provides Claude Code (and other MCP clients) with access to your Slack channels, messages, users, and files without any write permissions.
xoxp- tokens for user-scoped access to your workspace.httpx directly for minimal, auditable HTTP calls.claude mcp add mcp-slack-crunchtools \
--env SLACK_USER_TOKEN=xoxp-your-token \
-- uvx mcp-slack-crunchtools
claude mcp add mcp-slack-crunchtools \
--env SLACK_USER_TOKEN=xoxp-your-token \
-- podman run -i --rm -e SLACK_USER_TOKEN quay.io/crunchtools/mcp-slack
claude mcp add mcp-slack-crunchtools \
--env SLACK_USER_TOKEN=xoxp-your-token \
-- uv run mcp-slack-crunchtools
See CLAUDE.md for detailed instructions on creating a Slack app and obtaining a User OAuth Token.
| Tool | Description |
|---|---|
slack_auth_test | Test connection and get token owner info |
slack_list_channels | List workspace channels |
slack_get_channel_info | Get channel details |
slack_get_channel_history | Read channel messages |
slack_get_thread_replies | Read thread replies |
slack_list_channel_members | List channel members |
slack_search_messages | Search messages |
slack_get_reactions | Get message reactions |
slack_list_reactions | List user's reactions |
slack_list_stars | List starred items |
slack_get_user_info | Get user details |
slack_list_users | List workspace members |
slack_get_user_profile | Get user profile |
slack_list_files | List files (metadata only) |
slack_get_file_info | Get file metadata |
See SECURITY.md for the full security design document.
AGPL-3.0-or-later
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