Collection · updated 11 Aug 2026
Communication MCP servers, ranked by security grade
Every communication MCP server we've graded, ordered by security grade and then popularity. 7 of these 16 earned an A or better.
16 servers, ranked by grade then popularity
A+
1. InditexTech/mcp-teams-server
An MCP (Model Context Protocol) server implementation for Microsoft Teams integration, providing capabilities
100/100 · 390★ · -1d since commit · 0 findingsA
2. korotovsky/slack-mcp-server
The most powerful MCP Slack Server with no permission requirements, Apps support, GovSlack, DMs, Group DMs and
95/100 · 1,777★ · 24d since commit · 1 findingA
3. nduckmink/arkon
Arkon: Enterprise AI Knowledge Hub & MCP Server. Self-hosted knowledge base for teams to manage RAG contexts,
92/100 · 1,199★ · 67d since commit · 1 findingA
4. DMontgomery40/deepseek-mcp-server
Model Context Protocol server for DeepSeek's advanced language models
100/100 · 351★ · 107d since commit · 0 findingsA
5. askimo-ai/askimo
AI Client for chat, RAG, plans, MCP tools, and agents. Support multiple LLMs (Anthropic, OpenAI, VertexAI, vLL
95/100 · 307★ · -1d since commit · 1 findingA
6. palewire/datawrapper-mcp
A Model Context Protocol (MCP) server and app for creating Datawrapper charts using AI assistants.
95/100 · 48★ · 39d since commit · 1 findingA
7. pinkpixel-dev/mindbridge-mcp
MindBridge is an AI orchestration MCP server that lets any app talk to any LLM — OpenAI, Anthropic, DeepSeek,
95/100 · 37★ · 149d since commit · 1 findingB
8. Klavis-AI/klavis
Klavis AI: MCP integration platforms that let AI agents use tools reliably at any scale
86/100 · 5,787★ · 69d since commit · 2 findingsB
9. svnscha/mcp-windbg
Model Context Protocol for WinDbg.
84/100 · 1,508★ · 20d since commit · 1 findingB
10. opensolon/solon-ai
Java AI application development framework (supports LLM-tool,skill; RAG; MCP; Agent-ReAct,Team-Agent). Compati
86/100 · 446★ · 0d since commit · 2 findingsC
11. chatmcp/mcp-server-chatsum
Query and Summarize your chat messages.
70/100 · 1,030★ · 613d since commit · 2 findingsC
12. BigSweetPotatoStudio/HyperChat
HyperChat is a Chat client that strives for openness, utilizing APIs from various LLMs to achieve the best Cha
76/100 · 707★ · 356d since commit · 3 findingsC
13. amotivv/protonmail-mcp
This MCP server provides email sending functionality using Protonmail's SMTP service. It allows both Claude De
80/100 · 50★ · 515d since commit · 2 findingsC
14. pinkpixel-dev/MCPollinations
An MCP server that enables AI assistants to generate images, text, and audio through the Pollinations APIs. Pl
75/100 · 39★ · 28d since commit · 1 findingC
15. TitanmindAGI/titanmind-whatsapp-mcp
A WhatsApp marketing and messaging tool MCP (Model Control Protocol) service using Titanmind. Handles free-for
80/100 · 18★ · 389d since commit · 2 findingsD
16. GongRzhe/Gmail-MCP-Server
A Model Context Protocol (MCP) server for Gmail integration in Claude Desktop with auto authentication support
60/100 · 1,167★ · 368d since commit · 2 findings
Grades come from static analysis of public source; no live endpoint was probed. A clean grade means our checks found nothing, which is weaker than "safe". Full method.