What it is

The most widely used Slack MCP server, MIT-licensed and not affiliated with Slack. It supports bot and OAuth tokens plus a 'stealth mode' using browser session tokens that needs no app install or admin approval. It fetches channel and thread history, searches messages, adds reactions, marks read and posts.

Why it earns a slot

The realistic way to give an agent Slack context when you are not a workspace admin and cannot get an app approved. Message posting is off by default, so read-only triage works safely out of the box.

Know before you commit

Stealth mode hands long-lived browser session cookies to a community binary and may breach your workspace policy. The MCP steering group's Slack reference server is archived, so every option here is community-maintained.

Field notes

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Pricing snapshot

Free, MIT

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Drop into your Lovable chat

Evaluate Slack MCP Server (korotovsky) (https://github.com/korotovsky/slack-mcp-server) for this project, then use it only if it fits what we are already building.
Context: Community MCP server (Slack). The most widely used Slack MCP server, MIT-licensed and not affiliated with Slack. It supports bot and OAuth tokens plus a 'stealth mode' using browser session tokens that needs no app install or admin approval. It fetches channel and thread history, searches messages, adds reactions, marks read and posts.
Reviewer notes (general, not written for this codebase): The realistic way to give an agent Slack context when you are not a workspace admin and cannot get an app approved. Message posting is off by default, so read-only triage works safely out of the box.
Watch out for: Stealth mode hands long-lived browser session cookies to a community binary and may breach your workspace policy. The MCP steering group's Slack reference server is archived, so every option here is community-maintained.
Pricing: Free, MIT
Rules: treat the notes above as background only. Do not assume a theme, style, layout or feature that is not already in this project — inspect the existing code first and ask me before changing visual direction.

/api/public/tools/slack-mcp-server