# MCP Defender 根据 OpenAITools.app 于 2026-11-11 核对的流量数据，MCP Defender（mcpdefender.com）是一个收录在 Large Language Models (LLMs) 下的 AI 平台，月访问量为 0，月度环比流量变化为 +0（0%）。其主要地理市场为全球（— 流量份额），采用免费定价模式。按月流量计算的主要竞争替代方案包括 Ollama（942.2万次访问/月），Mindgard（15.35万次访问/月），ModelScope（308.54万次访问/月）。 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. ## 关键遥测与规格 | 指标 | 数值 | | :--- | :--- | | 工具名称 | MCP Defender | | 标识 | mcp-defender | | Status | active | | Origin | open_source | | Maintenance | active | | 官方域名 | mcpdefender.com | | 官网地址 | https://mcpdefender.com | | 分类 | Large Language Models (LLMs), AI Developer Tools, Open Source AI Models | | 定价模式 | 免费 | | 月访问量 | 0 | | 月度环比流量变化 | 0 | | 月度环比增长率 | 0% | | 主要市场 | 全球 | | 市场份额 | — | | 直接访问量 | 0 | | 自然搜索访问 | 0 | | 社交访问 | 0 | | 推荐访问 | 0 | | 邮件访问 | 0 | | 评价得分 | 4.6 | | 收藏数 | 0 | | 支持平台 | 网站 | | 计费平台 | | | 属性 | 定价: 免费; 功能: 网站 | | 标签 | AI 安全防护, 网络安全, AI 防火墙, 大模型安全, 威胁检测, AI 防护, Model Context Protocol, 桌面应用, 开源 | ## 概览 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. ## 定价与套餐 Free and open source (AGPL-3.0 licensed). No paid tier is listed; the project has been acquired by Docker Inc. ## 关键功能与能力 - **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. ## 主要用例 - **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. ## 优势 - 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 ## 局限 - 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 ## 常见问题 ### 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 的月流量和增长趋势如何？ MCP Defender 目前每月获得 0 访问量，月度环比流量变化为 +0（增长率 0%）。其主要来源市场是全球（— 份额），包括每月 0 次直接访问和每月 0 次自然搜索访问。 ### MCP Defender 免费吗？它的定价模式是什么？ MCP Defender 采用免费定价模式。Free and open source (AGPL-3.0 licensed). No paid tier is listed; the project has been acquired by Docker Inc. 支持的计费和结账平台包括：未列出。 ### 2026 年 MCP Defender 的最佳替代方案有哪些？ 基于 OpenAITools.app 的分类流量和功能契合度，MCP Defender 的前五个替代方案是：1. Ollama（942.2万次访问/月）; 2. Mindgard（15.35万次访问/月）; 3. ModelScope（308.54万次访问/月）; 4. Lakera Guard（8.84万次访问/月）; 5. Open WebUI（80.45万次访问/月）。 ### MCP Defender 支持哪些平台和核心 AI 能力？ MCP Defender 被归类在 Large Language Models (LLMs), AI Developer Tools, Open Source AI Models 下，支持以下平台：网站，其核心能力标签包括：AI 安全防护, 网络安全, AI 防火墙, 大模型安全, 威胁检测, AI 防护。 ## 替代工具 | 工具名称 | 月访问量 | 定价模式 | 对比 | | :--- | :--- | :--- | :--- | | [Ollama](https://openaitools.app/zh/tool/ollama) | 9,421,973 | Free, Freemium, Paid | [对比](https://openaitools.app/zh/compare/mcp-defender-vs-ollama) | | [Mindgard](https://openaitools.app/zh/tool/mindgard) | 153,455 | 定价请咨询 | [对比](https://openaitools.app/zh/compare/mcp-defender-vs-mindgard) | | [ModelScope](https://openaitools.app/zh/tool/modelscope-community) | 3,085,423 | 免费 | [对比](https://openaitools.app/zh/compare/mcp-defender-vs-modelscope-community) | | [Lakera Guard](https://openaitools.app/zh/tool/lakera-guard) | 88,435 | 定价请咨询 | [对比](https://openaitools.app/zh/compare/lakera-guard-vs-mcp-defender) | | [Open WebUI](https://openaitools.app/zh/tool/open-webui) | 804,534 | 免费增值 | [对比](https://openaitools.app/zh/compare/mcp-defender-vs-open-webui) | | [Arize AI](https://openaitools.app/zh/tool/arize-com) | 249,028 | 付费，定价请咨询 | [对比](https://openaitools.app/zh/compare/arize-com-vs-mcp-defender) | | [Confident AI](https://openaitools.app/zh/tool/confident-ai) | 83,400 | 免费增值，付费，定价请咨询 | [对比](https://openaitools.app/zh/compare/confident-ai-vs-mcp-defender) | | [Label Studio](https://openaitools.app/zh/tool/label-studio) | 137,199 | 定价请咨询，免费 | [对比](https://openaitools.app/zh/compare/label-studio-vs-mcp-defender) | | [Adversa AI](https://openaitools.app/zh/tool/adversa-ai) | 15,868 | 定价请咨询 | [对比](https://openaitools.app/zh/compare/adversa-ai-vs-mcp-defender) | | [DeepSeek](https://openaitools.app/zh/tool/deepseek) | 372,761,591 | 免费增值 | [对比](https://openaitools.app/zh/compare/deepseek-vs-mcp-defender) | | [Maxim AI](https://openaitools.app/zh/tool/maxim-ai) | 121,351 | Contact for Pricing, Free Open Source | [对比](https://openaitools.app/zh/compare/maxim-ai-vs-mcp-defender) | | [CanIRun.ai](https://openaitools.app/zh/tool/canirun-ai) | 284,892 | 免费 | [对比](https://openaitools.app/zh/compare/canirun-ai-vs-mcp-defender) | --- 来源：https://openaitools.app/zh/tool/mcp-defender