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Hospital WAF MCP

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Hospital WAF Management System MCP Server

Python License MCP

English | 中文

Hospital Web Application Firewall MCP server, providing WAF rule detection capabilities for AI assistants. It supports SQL injection, XSS, command injection, and path traversal detection, with built-in specialized rules for hospital scenarios.

✨ Features

  • 🔒 SQL Injection Detection — Identifies common SQLi attack patterns (UNION injection, Boolean-based blind, Time-based blind, Error-based injection)

  • 🎯 XSS Cross-Site Scripting Detection — Detects reflected/stored XSS (script tags, event handlers, JS URI)

  • ⚡ Command Injection Detection — Identifies Unix/Windows system command execution attacks

  • 📁 Path Traversal Detection — Detects directory traversal attacks and encoding bypasses

  • 🏥 Hospital-Specific Rules — Covers common vulnerability patterns in HIS/PACS/LIS/RIS

  • 🔄 Hot-Reload Rules — No service restart required after modifying rules

  • 🧪 Self-Test — Built-in attack samples to verify engine capabilities

  • ⚡ Lightweight Execution — Pure Python regex engine, no external dependencies

Related MCP server: Smart EHR MCP Server

🚀 Quick Start

1. Installation

# 克隆仓库
git clone https://github.com/12211725-star/hospital-waf-mcp.git
cd hospital-waf-mcp

# 安装依赖
pip install -r requirements-mcp.txt

2. Integration into MCP Client

Add the following to your MCP client configuration file:

{
  "mcpServers": {
    "hospital-waf-mcp": {
      "command": "python",
      "args": ["-m", "waf_mcp"],
      "env": {
        "WAF_MCP_LOG_LEVEL": "INFO"
      }
    }
  }
}

Docker Method

{
  "mcpServers": {
    "hospital-waf-mcp": {
      "command": "docker",
      "args": ["run", "--rm", "-i", "hospital-waf-mcp"],
      "env": {
        "WAF_MCP_LOG_LEVEL": "INFO"
      }
    }
  }
}

Streamable HTTP Remote Deployment

export WAF_MCP_TRANSPORT=http
export WAF_MCP_HOST=0.0.0.0
export WAF_MCP_PORT=8000
python -m waf_mcp

MCP Endpoint: http://<host>:8000/mcp Health Check: GET /health

📖 Usage

Detect SQL Injection

In Claude / Cursor / other MCP clients:

请帮我检测这个请求是否有安全问题：
URL: https://example.com/search?q=1' OR '1'='1

The AI will call the waf_check_request tool and return:

[
  {
    "rule_id": "sqli-001",
    "category": "SQL Injection",
    "severity": "high",
    "matched": "1' OR '1'='1",
    "description": "检测到 SQL 注入特征"
  }
]

Detect XSS Attacks

检测这个 POST 请求的 body：
<script>alert('xss')</script>

View Rule Statistics

当前 WAF 引擎加载了多少规则？

🎯 Prompt Guide

Security Assessment Scenarios

我需要对一个请求进行安全检测，
URL 是 https://hospital.example.com/api/patient?id=1 UNION SELECT，
请帮我分析是否存在攻击特征。

Rule Maintenance Scenarios

我刚刚更新了 WAF 规则文件，
请帮我重新加载规则并确认加载成功。

Engine Verification Scenarios

请运行 WAF 引擎自检测试，
确认 SQL 注入和 XSS 检测功能正常。

Log Analysis Scenarios

帮我检测这个可疑请求的完整参数：
URL: https://api.hospital.com/query
Method: POST
Body: {"filter": "'; DROP TABLE users; --"}
Headers: {"Content-Type": "application/json"}

🛠️ Tool List

Tool

Description

Parameters

waf_check_request

WAF request detection

url: Request URL, method: HTTP method, headers: Request headers, body: Request body, cookies: Cookies

waf_rule_stats

Rule statistics

None

waf_reload_rules

Hot-reload rules

None

waf_run_self_tests

Self-test

None

📖 Environment Variables

Variable

Description

Default Value

WAF_MCP_TRANSPORT

Transport protocol (stdio/http/sse)

stdio

WAF_MCP_HOST

HTTP listen address

127.0.0.1

WAF_MCP_PORT

HTTP listen port

8000

WAF_MCP_LOG_LEVEL

Log level

INFO

WAF_RULES_FILE

Rules file path

waf_mcp/rules/waf_rules.mcp.json

📋 Detection Capabilities

SQL Injection Detection

Risk Type

Severity

Detection Condition

UNION Injection

High

UNION SELECT, etc.

Boolean Blind

High

AND/OR Boolean expressions

Time-based Blind

High

SLEEP/BENCHMARK, etc.

Error-based

High

EXTRACTVALUE/UPDATEXML, etc.

Stacked Queries

High

Multiple SQL statements separated by semicolons

XSS Detection

Risk Type

Severity

Detection Condition

script tag

High

<script> tag injection

Event handlers

High

onclick/onerror, etc.

JavaScript URI

Medium

javascript: protocol

SVG injection

Medium

<svg onload>, etc.

Command Injection Detection

Risk Type

Severity

Detection Condition

Unix Command Injection

Critical

;

& $ ` pipe connections

Windows Command Injection

Critical

&

^ command connections

Dangerous Commands

Critical

cat/ls/wget/curl, etc.

Path Traversal Detection

Risk Type

Severity

Detection Condition

Directory Traversal

High

../ path traversal

URL Encoding Bypass

High

%2e%2e/ etc. encoding

Double Encoding Bypass

High

%252e%252e/ etc.

Hospital-Specific Scenarios

System Type

Keywords

HIS

Hospital Information System, Outpatient, Inpatient, Registration

PACS

Imaging, DICOM, Radiology

LIS

Laboratory, Lab, Biochemical

RIS

Radiology Information System, Diagnostic Imaging

EMR

Electronic Medical Record, Progress Notes

🔧 Development

git clone https://github.com/12211725-star/hospital-waf-mcp.git
cd hospital-waf-mcp
pip install -e .

# 运行测试
python scripts/run_functional_tests.py

# 本地运行
python -m waf_mcp

📁 Project Structure

hospital-waf-mcp/
├── waf_mcp/                  # MCP 服务包
│   ├── __init__.py
│   ├── __main__.py
│   ├── config.py
│   ├── server.py
│   ├── version.py
│   ├── waf_engine.py
│   └── rules/
│       └── waf_rules.mcp.json
├── scripts/                  # 脚本工具
├── modelscope.yaml           # 魔搭配置
├── mcp.json                  # MCP 元数据
├── mcp_config.json           # MCP 客户端配置
├── pyproject.toml            # Python 项目配置
└── README.md

📄 License

MIT License

🔗 Links

Available Tools

4 tools
waf_check_requestB

对 HTTP 请求做 WAF 规则检测，返回命中的告警列表（无命中则为空列表）。url 建议包含完整查询串。

ParametersJSON Schema
NameRequiredDescriptionDefault
urlNo
methodNoGET
headersNo
bodyNo
cookiesNo

Output Schema

ParametersJSON Schema
NameRequiredDescription
resultYes

TDQS

B3.4/5.0
Behavior3/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, so the description must carry the full burden. It discloses that the tool returns an alert list (or empty list) and implies it is a read-only check. However, it does not mention side effects, authentication needs, or rate limits. The behavioral coverage is adequate but not comprehensive.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is very short (two sentences) and front-loaded with the main purpose. It contains no unnecessary words. However, it could be improved by structuring parameter details more clearly.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given 5 parameters, no schema descriptions, no annotations, and an output schema (not detailed), the description is incomplete for an AI agent to use correctly. It lacks parameter explanations and does not cover how to structure requests. The url tip is helpful but insufficient.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters2/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0%, yet the description only elaborates on one parameter: 'url 建议包含完整查询串'. It does not explain the meaning or expected format of method, headers, body, or cookies. The description adds little beyond the schema property names, leaving the agent to infer common HTTP semantics.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's action: '对 HTTP 请求做 WAF 规则检测' (perform WAF rule detection on HTTP request) and specifies the output: '返回命中的告警列表' (return list of matching alerts). It distinguishes itself from sibling tools (waf_reload_rules, waf_rule_stats, waf_run_self_tests) which focus on rule management.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description includes a usage tip: 'url 建议包含完整查询串' (url is recommended to include full query string), but does not explicitly state when to use this tool vs alternatives or provide any exclusions. The context implies it is for checking a single request, but guidance is minimal.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

waf_reload_rulesA

重新从磁盘加载 WAF_RULES_FILE（或默认 rules/waf_rules.mcp.json）并编译。用于修改规则文件后无需重启 MCP。

ParametersJSON Schema
NameRequiredDescriptionDefault

No parameters

Output Schema

ParametersJSON Schema
NameRequiredDescription

No output parameters

TDQS

A4.3/5.0
Behavior3/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, so the description carries full burden. It discloses the reload and compile actions but lacks detail on potential side effects (e.g., whether it is safe to call mid-operation, impacts on in-flight requests). The presence of an output schema suggests return values are documented elsewhere.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is two sentences in Chinese, efficiently stating the action and purpose with no superfluous words. It is front-loaded and to the point.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the simplicity of the tool (no parameters, output schema exists), the description covers what it does, the file involved, and the reason to use it. It is sufficiently complete for an agent to select and invoke correctly.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The tool has zero parameters, so schema coverage is 100%. The description adds no parameter information, but the baseline for no parameters is 4. No additional semantics needed.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's action: reload the WAF rules file from disk and compile, with the specific purpose of avoiding MCP restart after rule modifications. It distinguishes itself from sibling tools (check, stats, self-tests) by focusing on reloading.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description explicitly indicates when to use: after modifying rule files. However, it does not provide exclusions or mention alternatives, but the context is clear given sibling tool purposes.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

waf_rule_statsA

返回当前已加载规则的统计：含 rules_file、compiled_rules、compile_failed、compile_errors（截断）及分类计数。

ParametersJSON Schema
NameRequiredDescriptionDefault

No parameters

Output Schema

ParametersJSON Schema
NameRequiredDescription

No output parameters

TDQS

A3.8/5.0
Behavior3/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations provided, but the description mentions that compile_errors are truncated, which is a useful behavioral detail. However, it lacks further info on side effects or prerequisites.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Single sentence is front-loaded with purpose and lists key fields, no wasted words.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given no parameters and presence of output schema, the description adequately covers the tool's purpose and notes the truncation of compile_errors.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

No parameters exist, so schema coverage is 100%. The description does not need to add parameter info; baseline for 0 params is 4.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states it returns statistics of currently loaded rules and lists specific fields (rules_file, compiled_rules, etc.), distinguishing it from sibling tools like waf_check_request or waf_reload_rules.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No guidance on when to use this tool versus alternatives; it only describes what it does without context for selection.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

waf_run_self_testsA

运行内置 SQLi/XSS/命令注入/路径遍历样例，用于快速验证引擎是否检出攻击。

ParametersJSON Schema
NameRequiredDescriptionDefault

No parameters

Output Schema

ParametersJSON Schema
NameRequiredDescription
resultYes

TDQS

A4/5.0
Behavior3/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations, the description carries the transparency burden. It states the action and purpose but omits details on return format, side effects (e.g., alerts, logs), or whether it alters state. Neither destructive nor read-only hint provided.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Single sentence, efficient, and front-loaded with the verb '运行'. Every word earns its place with no redundancy.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given zero parameters and an existing output schema, the description covers the core purpose. It could briefly indicate output (e.g., pass/fail), but remains sufficiently complete for a test tool.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Input schema has zero parameters, so there is nothing to explain. Baseline for 0 params is 4 per guidelines.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool runs built-in attack samples (SQLi, XSS, etc.) to verify engine detection, with a specific verb and resource. It distinguishes from sibling tools like waf_check_request (single request check) and waf_reload_rules (rules reload).

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The phrase '快速验证' implies quick testing, but lacks explicit guidance on when to use vs alternatives or any exclusions. No when-not-to-use or prerequisites mentioned.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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TDQS

A4/5.0
Disambiguation5/5

Each tool has a clearly distinct purpose: checking requests, reloading rules, viewing statistics, and running self-tests. No two tools overlap in functionality.

Naming Consistency5/5

All tool names follow a consistent 'waf_verb_noun' pattern using snake_case, with clear and descriptive verbs (check, reload, rule_stats, run_self_tests).

Tool Count5/5

With 4 tools, the set is well-scoped for a WAF server, covering essential operations without being unnecessarily large or too minimal.

Completeness4/5

The tools cover the main use cases (request checking, rule management, statistics, testing). Minor gaps exist, such as no tool for individually viewing or modifying specific rules, but core workflows are supported.

Maintenance

ActivityInactive
ResponsivenessSyncing

Resources

Unclaimed servers have limited discoverability.

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