Does this server require OAuth app configuration or admin approval?
No. Just grab your browser tokens from Chrome DevTools and go.
S
Slack MCP Server
@jtalk22
Basic information
About Slack MCP Server
Give Claude full access to your Slack workspace. Read DMs, channels, threads, search messages, and send replies - all with simple browser token auth. No OAuth requirements/rabbit holes.
Slack MCP Server config
Add this server to your MCP-compatible client using the configuration below.
{
"mcpServers": {
"slack": {
"command": "npx",
"args": [
"-y",
"@jtalk22/slack-mcp"
],
"env": {
"SLACK_TOKEN": "<YOUR_SLACK_TOKEN>",
"SLACK_COOKIE": "<YOUR_SLACK_COOKIE>"
}
}
}
}Slack MCP Server tools
21Check token health, age, auto-refresh status, and cache stats
Check if Slack tokens are valid and show authentication status
Force refresh tokens by extracting from Chrome (requires Slack tab open in Chrome)
List all DMs and channels with user names resolved. Uses cached DMs by default for speed.
Get messages from a channel or DM with user names resolved
Export FULL conversation history with all messages, threads, and user names. Can save to file.
Search messages across the Slack workspace
Get detailed information about a Slack user
Send a message to a channel or DM
Get all replies in a message thread
List all users in the workspace
Add an emoji reaction to a message
Remove an emoji reaction from a message
Mark a conversation as read up to a specific message timestamp
Get channels and DMs with unread messages, sorted by unread count (highest first)
Search workspace users by name, display name, or email. Case-insensitive partial match.
Save or update a workflow profile that binds a workflow_kind (support_inbox | incident_room | exec_brief | product_launch_watch | custom) to channels, priority people, retention mode, and summary cadence. Stored locally at ~/.slack-mcp-workflows.json. Hosted brain reads these to return structured JSON per the workflow_kind.
List all saved workflow profiles from ~/.slack-mcp-workflows.json. Optionally filter by workflow_kind. Returns profile_name, channels, priority_people, retention_mode, summary_cadence, structured_keys, created_at, updated_at.
Catch up on a saved workflow profile. Reads the profile's channels (or everything currently unread if the profile names none), pulls messages since the cadence window or an explicit `since`, expands active threads, and returns structured evidence: which threads are unanswered and for how long, what the profile's priority people said or were pinned on, and which conversations moved most. Runs locally against your own session — no hosted account, no server-side model. The response carries an `output_contract` naming the keys to compose for this workflow_kind; write the summary from the returned `signals` and `conversations`, citing conversation names and timestamps.
Semantic + lexical hybrid search across your indexed Slack history. Returns ranked results with relevance scores, channel context, thread context, and matched terms. Hosted-only (requires Vectorize + Workers AI). Free tier ships 25 AI tool calls/month (shared across the hosted AI tools); upgrade to Pro $19/mo for unlimited at mcp.revasserlabs.com/pricing.
Classify and route Slack threads against a workflow profile. Returns triage decisions per thread: priority (low|medium|high|urgent), suggested owner, escalation flag, time-sensitivity, and a routing recommendation. Hosted-only. Free tier ships 25 AI tool calls/month (shared across the hosted AI tools); Pro $19/mo unlocks unlimited.
Overview
What is Slack Mcp Server?
A Slack MCP server that works without OAuth app configuration or admin approval. It uses browser tokens to let users read DMs, channels, full conversation history, search messages, export conversations, and send messages or reply to threads—all from within Claude.
Key features of Slack Mcp Server?
Add the server to your Claude configuration and obtain tokens from Chrome DevTools. A full setup guide is available at the linked GitHub repository.
Use cases of Slack Mcp Server?
- Browse all DMs and channels and pull full conversation history with threads.
- Search messages across an entire workspace.
- Export complete conversations for context gathering.
- Send messages to any channel or DM and reply to threads from within Claude.
- Automatically resolve user names in conversations.
Frequently asked questions
What actions can I perform with this server?
Read DMs and channels, pull history with threads, search messages across the workspace, export conversations, send messages, reply to threads, and automatically resolve user names.
Which AI assistant is this server designed for?
The server is designed to be used from within Claude.
How do I obtain the required tokens?
You obtain them from Chrome DevTools. The full setup guide is linked in the GitHub repository.
Are there any runtime dependencies besides tokens?
The README does not mention any additional dependencies or runtime requirements.
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