Best Slack MCP Servers
Slack is a collaboration hub that connects your organization's people, information, and tools. It's a platform for team communication where work flows seamlessly between direct messaging, group conversations, and dedicated channels for projects, topics, or teams.
Why this server?
Integration with Slack as an upstream service behind the proxy, allowing code-of-conduct policy, per-user state, and audit controls to apply to Slack tool calls and responses.
AlicenseAqualityBmaintenancePolicy proxy that governs what AI assistants can reach and do: it refuses forbidden tool calls before the upstream is contacted, with per-user memory and a tamper-evident audit. Stops prompt-injection exfiltration and forbidden data combinations across connectors.2121Apache 2.0Why this server?
Enables routing audit notification events to Slack channels via the prufa_set_notifications tool.
AlicenseAqualityAmaintenancePoint your coding agent at a URL and get a real-browser QA audit: broken signup/login/checkout flows, JS console errors, missing analytics, consent + security headers, mobile tap targets, and accessibility — returned as machine-verified findings graded A-F.442Apache 2.0Why this server?
Allows creating Slack alert channels for Crontinel notifications.

@crontinel/mcp-serverofficial
AlicenseAqualityBmaintenanceConnects AI assistants to Crontinel, enabling natural language queries about cron jobs, queues, Horizon status, and alerts without opening a browser.77 npmMITWhy this server?
Allows sending notifications to Slack channels based on conversation events, such as when a conversation scores above a trust threshold.

Perspective AIofficial
AlicenseBqualityBmaintenanceAn AI Concierge replaces static forms with adaptive AI conversations that understand real situations, structure key information automatically, and trigger the right next step. Rigid forms cause drop-off, weaken qualification, and strip away context. Perspective uses adaptive AI to capture structured data and trigger automation, so you understand what truly matters to your customers and can make d225MITWhy this server?
Allows retrieving and interacting with chat sessions via Slack channel IDs.
Why this server?
Monitors running status of Slack as part of process presence tracking.

roxabi-senseofficial
AlicenseBqualityBmaintenanceLocal workstation attention journal that tracks focus, idle, and agent sessions, exposing timeline data via MCP for AI agents to query current or past activity.5AGPL 3.0Why this server?
Detects and redacts Slack API tokens, webhook URLs, and session tokens in text.

classifinder-mcpofficial
AlicenseAqualityBmaintenanceEnables AI agents to scan text for leaked secrets and prompt injection markers, and redact them before reaching an LLM.21MITWhy this server?
Sends monitoring alerts and notifications via Slack Block Kit.
AlicenseAqualityBmaintenanceAutonomous synthetic health checks, JSON-RPC 2.0 handshake validation, breaking schema drift detection, and credential leak scanning for remote MCP servers.535 npm1Apache 2.0Why this server?
References community access through Slack for support and collaboration with other users.

Semgrep MCP Serverofficial
AlicenseBqualityFmaintenanceAn MCP server that provides a comprehensive interface to Semgrep, enabling users to scan code for security vulnerabilities, create custom rules, and analyze scan results through the Model Context Protocol.6628 PyPI686MIT