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SentinelMCP

SentinelMCP

CI License: MIT Python 3.11+ Code Style: Ruff

用于模型上下文协议(MCP)的确定性策略防火墙与运行时治理引擎


概述

SentinelMCP 是一个生产级安全网关和运行时治理框架,专为**模型上下文协议(MCP)**服务器和多代理 AI 集群 [1] 设计。随着 AI 代理通过 MCP 越来越自主地访问企业文件系统、数据库和 API,提示注入、未授权工具调用和数据泄露等安全风险急剧增加。

SentinelMCP 充当内联策略防火墙,拦截 JSON-RPC MCP 工具调用,根据声明式 AST 规则检查参数,强制执行安全限制,并记录不可篡改、可加密验证的审计跟踪。


Related MCP server: protect-mcp

核心架构与特性

  • 策略即代码引擎:声明式 JSON/YAML 策略定义,支持工具名称的 glob 模式匹配、参数值的正则表达式检查以及严格的参数模式验证 [2]。

  • 加密溯源账本:仅追加的审计日志,每条执行记录通过 SHA-256 哈希链接,确保防篡改的可追溯性,满足合规和审计要求。

  • 高性能代理网关:基于 FastAPI 和 Pydantic v2 构建,通过异步请求处理实现亚毫秒级拦截延迟。

  • CLI 与测试工具链:内置 CLI,用于评估工具调用是否符合策略、运行网关服务器以及验证账本完整性。

  • 企业级 CI/CD:通过 pytest 全面测试,在 Python 3.11 和 3.12 上进行矩阵测试,并与 GitHub Actions 工作流集成。


安装

克隆仓库并以可编辑模式安装,同时包含开发依赖:

git clone https://github.com/ateeqdesktop-dot/sentinel-mcp.git
cd sentinel-mcp
pip install -e .[dev]

使用方法

1. 通过 CLI 评估工具调用

您可以测试 SentinelMCP 如何根据您的安全策略评估任何 MCP 工具调用:

sentinel-mcp evaluate --tool fs_delete --args '{"path": "/home/user/document.txt"}' --policy policy.json

2. 运行网关服务器

在本地启动 SentinelMCP 代理服务器:

sentinel-mcp serve --host 127.0.0.1 --port 8000 --policy policy.json

3. 验证审计账本完整性

验证仅追加的审计跟踪是否未被篡改:

sentinel-mcp verify --ledger sentinel_audit.jsonl

策略配置示例(policy.json

{
  "version": "1.0",
  "default_action": "allow",
  "rules": [
    {
      "id": "block-destructive-fs",
      "tool_pattern": "fs_*",
      "action": "deny",
      "forbidden_arguments": [
        "rm\\s+-rf",
        "/etc/passwd",
        "drop\\s+database"
      ]
    },
    {
      "id": "limit-sql-queries",
      "tool_pattern": "db_*",
      "action": "allow",
      "max_string_length": 500
    }
  ]
}

测试

使用 pytest 和代码覆盖率运行测试套件:

pytest --cov=sentinel tests/ -v

许可证

根据 MIT 许可证分发。有关更多信息,请参阅 LICENSE


参考

  1. Anthropic 模型上下文协议(MCP)规范。在线可用

  2. 云原生安全的 Open Policy Agent(OPA)原则。在线可用

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