ToolTrust
A2/100
Smithery

node2flow-slack

mcpsmithery

@Smithery

MCP server for Slack Web API — send messages, manage channels, search content, and automate your workspace. ## Features - Send, update, delete, and schedule messages with Block Kit support - Manage channels: create, archive, invite/kick members, set topics - Search messages and files with Slack's powerful query syntax - Upload and manage files with 2-step upload process - React to messages, pin items, and manage bookmarks - Browse users, team info, and custom emoji ## 38 Tools **Messages (7)**: send, update, delete, schedule, cancel scheduled, list scheduled, get permalink **Conversations (12)**: list channels, info, history, thread replies, members, create, archive, invite, kick, join, set topic, open DM **Users (2)**: list all, get info **Reactions (3)**: add, remove, get reactions **Search (2)**: search messages, search files **Files (3)**: upload, list, delete **Pins (3)**: pin, unpin, list pins **Bookmarks (4)**: add, edit, remove, list **Team (1)**: get workspace info **Emoji (1)**: list custom emoji ## Configuration - SLACK_BOT_TOKEN — Get one at https://api.slack.com/apps (create app → OAuth & Permissions → Install → copy Bot Token)

By Smithery | 60 findings | Scanned 7/4/2026 | tooltrust-scanner/v0.3.19

6 Low54 Info

Risk Summary

Safe With Normal Controls

Dep Visibility is the main signal, but overall risk remains within an acceptable range.

Potential impact: This finding indicates the tool should be reviewed before it is trusted.

Recommended action: No high-risk findings were detected in this scan, but you should still apply least-privilege defaults and rescan after changes.

Suggested policy: keep this tool behind manual approval, do not allow unattended runs, and re-scan after narrowing risky permissions.

Security Findings (60)

  • LowAS-011

    ℹ️Missing Rate-Limit / Timeout ×6

    tool performs network or execution operations but declares no rate-limit, timeout, or retry configuration

    slack_send_messageslack_get_permalinkslack_search_messagesslack_search_filesslack_upload_fileslack_list_emoji

    Fix: Declare explicit rate-limit, timeout, and retry configuration for all network and execution tools. Implement exponential back-off and surface resource state to the calling agent.

  • InfoAS-002

    ⚠️Excessive Permissions ×16

    declared capabilities: network access

    slack_send_messageslack_get_permalinkslack_list_emoji

    declared capabilities: filesystem access

    slack_update_messageslack_delete_messageslack_delete_scheduled_messageslack_create_channelslack_get_user_infoslack_remove_reactionslack_list_filesslack_delete_fileslack_pin_messageslack_remove_bookmark

    declared capabilities: network access, filesystem access, database access

    slack_search_messagesslack_search_files

    declared capabilities: network access, filesystem access

    slack_upload_file

    Fix: Tool requests broad permissions (exec/fs/network). Validate input parameters using Enums where possible, and restrict file system operations to explicit allowed directories.

  • InfoAS-014

    ℹ️Dependency Inventory Unavailable ×38

    Tool did not expose metadata.dependencies or repo_url, so supply-chain coverage is limited.

    slack_send_messageslack_update_messageslack_delete_messageslack_schedule_messageslack_delete_scheduled_messageslack_list_scheduled_messagesslack_get_permalinkslack_list_channelsslack_get_channel_infoslack_get_channel_historyslack_get_thread_repliesslack_get_channel_membersslack_create_channelslack_archive_channelslack_invite_to_channelslack_kick_from_channelslack_join_channelslack_set_channel_topicslack_open_conversationslack_list_usersslack_get_user_infoslack_add_reactionslack_remove_reactionslack_get_reactionsslack_search_messagesslack_search_filesslack_upload_fileslack_list_filesslack_delete_fileslack_pin_messageslack_unpin_messageslack_list_pinsslack_add_bookmarkslack_edit_bookmarkslack_remove_bookmarkslack_list_bookmarksslack_get_team_infoslack_list_emoji

    Fix: Review and remediate the identified issue.

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$ curl -sfL https://raw.githubusercontent.com/AgentSafe-AI/tooltrust-scanner/main/install.sh | bash
$ tooltrust-scanner scan --server "npx -y node2flow-slack"

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