# MCP Defender 依據 OpenAITools.app 於 2026-11-11 查驗的觀測資料，MCP Defender（mcpdefender.com）是收錄於 Large Language Models (LLMs) 的 AI 平台，每月產生 0 次造訪，月流量變化量為 +0（0%）。其主要地理市場為全球（流量佔比 —），並採用免費定價模式。依每月流量計算的主要競爭替代方案包括 Ollama（每月 942.2萬次造訪），Mindgard（每月 15.35萬次造訪），ModelScope（每月 308.54萬次造訪）。 MCP Defender is a free, open-source desktop app that acts as a security proxy between AI apps like Cursor and Claude and their MCP servers. It scans every MCP tool call in real time and blocks prompt injection, credential theft, and other threats. ## 主要觀測資料與規格 | 指標 | 數值 | | :--- | :--- | | 工具名稱 | MCP Defender | | 代稱 | mcp-defender | | Status | active | | Origin | open_source | | Maintenance | active | | 官方網域 | mcpdefender.com | | 網站網址 | https://mcpdefender.com | | 分類 | Large Language Models (LLMs), AI 開發者工具, 開源 AI 模型 | | 定價模式 | 免費 | | 每月造訪次數 | 0 | | 月流量變化 | 0 | | 月成長率 | 0% | | 主要市場 | 全球 | | 市佔率 | — | | 直接造訪 | 0 | | 自然搜尋造訪 | 0 | | 社群造訪 | 0 | | 推薦流量造訪 | 0 | | 電子郵件造訪 | 0 | | 評論分數 | 4.6 | | 收藏數 | 0 | | 支援平台 | 網站 | | 帳務平台 | | | 屬性 | 價格: 免費; 功能: 網站 | | 標籤 | AI 安全防護, 網路安全, AI 防火牆, 大型語言模型安全, 威脅偵測, AI 防護, Model Context Protocol, 桌面應用程式, 開源 | ## 總覽 MCP Defender is a free, open-source desktop app that acts as a security proxy between AI apps like Cursor and Claude and their MCP servers. It scans every MCP tool call in real time and blocks prompt injection, credential theft, and other threats. ## 價格與方案 Free and open source (AGPL-3.0 licensed). No paid tier is listed; the project has been acquired by Docker Inc. ## 關鍵功能與能力 - **AI firewall:** Silently scans and protects all MCP tool calls flowing between your AI apps and their servers, without slowing your apps down. - **Layered threat detection:** Combines advanced LLM analysis with deterministic signatures to catch prompt injection, tool poisoning, credential theft, and command injection. - **Configurable scanning:** Bring your own LLM provider and API keys, and choose which signatures are used during scanning. - **Open source and free:** Free to download under the AGPL-3.0 license and now part of Docker Inc., with the source available on GitHub. ## 主要使用情境 - **Guard AI coding assistants (Developers):** Run MCP Defender as a background proxy while using Cursor or Claude, so any malicious tool call is flagged before it can cause harm. - **Protect credentials from agent misuse (Security engineers):** Rely on signature-based and LLM-based scanning to protect credentials and sensitive data that agents might otherwise expose. - **Monitor MCP communications (IT and platform teams):** Audit active MCP traffic and verification activity to understand which tools your AI apps are calling. - **Add a self-controlled defense layer (Privacy-conscious users):** Use an open-source, locally run proxy to add a security layer to agentic workflows without sending data to a third-party SaaS. ## 優勢 - Free and open source (AGPL-3.0) with source on GitHub - Real-time protection across multiple AI apps including Cursor, Claude, VS Code, and Windsurf - Layered detection combining LLM analysis and deterministic signatures - Bring your own LLM and API keys for full control ## 限制 - Requires you to supply your own LLM API keys for the LLM-based analysis layer - Runs as a local proxy, so it only protects AI apps on the machine where it is installed - As a young open-source project its signature and threat coverage continues to grow - Some threat data shown in the dashboard loads over the network rather than fully offline ## 常見問題 ### What does MCP Defender do? MCP Defender is a secure proxy that sits between your AI applications and MCP servers. It analyzes all Model Context Protocol communications in real time and alerts you as soon as it detects malicious activity. ### Is MCP Defender free? No. MCP Defender is open source under the AGPL-3.0 license and free to download, and it has been acquired by Docker Inc. ### How does the threat detection work? It combines advanced LLM analysis with deterministic signatures across multiple layers of defense. You can use it with your preferred LLM provider and your own API keys. ### Which AI apps does MCP Defender support? It is designed for Cursor, Claude, Visual Studio Code, and Windsurf, and more MCP-compatible clients are being added over time. ### MCP Defender 的每月流量與成長趨勢為何？ MCP Defender 目前每月有 0 次造訪，月流量變化為 +0（成長率 0%）。其主要來源市場為全球（佔比 —），其中包含每月 0 次直接造訪與每月 0 次自然搜尋造訪。 ### MCP Defender 是免費的嗎？其定價模式為何？ MCP Defender 採用免費定價模式。Free and open source (AGPL-3.0 licensed). No paid tier is listed; the project has been acquired by Docker Inc. 支援的帳務與結帳平台包括：未列出。 ### 2026 年最佳的 MCP Defender 替代方案有哪些？ 依據 OpenAITools.app 的分類流量與功能契合度，MCP Defender 的前五大替代方案為：1. Ollama（每月 942.2萬次造訪）; 2. Mindgard（每月 15.35萬次造訪）; 3. ModelScope（每月 308.54萬次造訪）; 4. Lakera Guard（每月 8.84萬次造訪）; 5. Open WebUI（每月 80.45萬次造訪）。 ### MCP Defender 支援哪些平台與核心 AI 能力？ MCP Defender 分類於 Large Language Models (LLMs), AI 開發者工具, 開源 AI 模型，支援以下平台：網站，其核心能力標籤包括：AI 安全防護, 網路安全, AI 防火牆, 大型語言模型安全, 威脅偵測, AI 防護。 ## 替代方案 | 工具名稱 | 每月造訪次數 | 定價模式 | 比較 | | :--- | :--- | :--- | :--- | | [Ollama](https://openaitools.app/tw/tool/ollama) | 9,421,973 | Free, Freemium, Paid | [比較](https://openaitools.app/tw/compare/mcp-defender-vs-ollama) | | [Mindgard](https://openaitools.app/tw/tool/mindgard) | 153,455 | 需聯絡報價 | [比較](https://openaitools.app/tw/compare/mcp-defender-vs-mindgard) | | [ModelScope](https://openaitools.app/tw/tool/modelscope-community) | 3,085,423 | 免費 | [比較](https://openaitools.app/tw/compare/mcp-defender-vs-modelscope-community) | | [Lakera Guard](https://openaitools.app/tw/tool/lakera-guard) | 88,435 | 需聯絡報價 | [比較](https://openaitools.app/tw/compare/lakera-guard-vs-mcp-defender) | | [Open WebUI](https://openaitools.app/tw/tool/open-webui) | 804,534 | 免費增值 | [比較](https://openaitools.app/tw/compare/mcp-defender-vs-open-webui) | | [Arize AI](https://openaitools.app/tw/tool/arize-com) | 249,028 | 付費、需聯絡報價 | [比較](https://openaitools.app/tw/compare/arize-com-vs-mcp-defender) | | [Confident AI](https://openaitools.app/tw/tool/confident-ai) | 83,400 | 免費增值、付費、需聯絡報價 | [比較](https://openaitools.app/tw/compare/confident-ai-vs-mcp-defender) | | [Label Studio](https://openaitools.app/tw/tool/label-studio) | 137,199 | 需聯絡報價、免費 | [比較](https://openaitools.app/tw/compare/label-studio-vs-mcp-defender) | | [Adversa AI](https://openaitools.app/tw/tool/adversa-ai) | 15,868 | 需聯絡報價 | [比較](https://openaitools.app/tw/compare/adversa-ai-vs-mcp-defender) | | [DeepSeek](https://openaitools.app/tw/tool/deepseek) | 372,761,591 | 免費增值 | [比較](https://openaitools.app/tw/compare/deepseek-vs-mcp-defender) | | [Maxim AI](https://openaitools.app/tw/tool/maxim-ai) | 121,351 | Contact for Pricing, Free Open Source | [比較](https://openaitools.app/tw/compare/maxim-ai-vs-mcp-defender) | | [CanIRun.ai](https://openaitools.app/tw/tool/canirun-ai) | 284,892 | 免費 | [比較](https://openaitools.app/tw/compare/canirun-ai-vs-mcp-defender) | --- 來源：https://openaitools.app/tw/tool/mcp-defender