Slack Mcp Server
The most powerful MCP Slack Server with no permission requirements, Apps support, GovSlack, DMs, Group DMs and smart history fetch logic.
ActiveNot tested
★ 1.5kGitHub
86No CVEsactive4 toolsMIT
Quick Install
{
"mcpServers": {
"slack-mcp-server": {
"args": [
"-y",
"@modelcontextprotocol/inspector"
],
"command": "npx"
}
}
}Should you use this server?
The most powerful MCP Slack Server with no permission requirements, Apps support, GovSlack, DMs, Group DMs and smart history fetch logic.
✓
Is it safe?
No package registry to scan.
No authentication — any process on your machine can connect.
MIT. View license →
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Is it maintained?
Last commit 8 days ago. 1,504 stars.
i
Will it work with my client?
Transport: stdio, sse, http. Works with Claude Desktop, Cursor, Claude Code, and most MCP clients.
B
Context cost
4 tools. ~1,400 tokens (0.7% of 200K).
Test This Server
No automated test available for this server. Check the GitHub README for setup instructions.
Tools (4)
conversations_historyGet messages from the channel (or DM) by channel_id, the last row/column in the response is used as 'cursor' parameter for pagination if not empty
conversations_repliesGet a thread of messages posted to a conversation by channelID and thread_ts, the last row/column in the response is used as cursor parameter for pagination if not empty
conversations_add_messageAdd a message to a public channel, private channel, or direct message (DM, or IM) conversation by channel_id and thread_ts. Disabled by default for safety.
conversations_search_messagesSearch messages in a public channel, private channel, or direct message (DM, or IM) conversation using filters. Not available with bot tokens (xoxb-*)
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Add informationScore Breakdown
Security
30/30Last scanned 3h ago
No known vulnerabilities.
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CVEs — No known CVEs for this package
○
Authentication — None required — easy to connect
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MCPpedia review — Not yet reviewed by MCPpedia
CVEs checked daily via OSV.dev. Score algorithm is open source.
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