waf_check_request

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。

SERVERHospital WAF MCP SOURCE12211725-star/hospital-waf-mcp

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade C, identity unverified Pull the record →

This record as markdown: /tools/12211725-star-hospital-waf-mcp/waf-check-request.md

WHAT IT DOES

What waf_check_request does on Hospital WAF MCP

AI agents call waf_check_request to retrieve information from Hospital WAF MCP without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why waf_check_request is rated Low

waf_check_request performs query/analysis on an HTTP request to determine if it matches security rules. No data is created, modified, deleted, or irreversibly altered. No code execution or financial transactions occur. The tool is read-only introspection of request compliance, placing it firmly in the Read category with low severity risk.

From the tool's definition Tool description indicates it 'checks HTTP requests against WAF rules and returns a list of triggered alerts (empty list if no matches)'.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs waf_check_request safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Hospital WAF MCP, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For waf_check_request, this is the rule to start with:

waf_check_request Allowed

waf_check_request is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "waf_check_request": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Hospital WAF MCP, apply this rule, and every waf_check_request call is checked against it from then on.

FAQ

Questions about waf_check_request

What does the waf_check_request tool do? +

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。. It is categorised as a Read tool in the Hospital WAF MCP MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on waf_check_request? +

Register the Hospital WAF MCP server in PolicyLayer and add a rule for waf_check_request: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Hospital WAF MCP. Nothing to install.

What risk level is waf_check_request? +

waf_check_request is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit waf_check_request? +

Yes. Add a rate_limit block to the waf_check_request rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block waf_check_request completely? +

Set action: deny in the PolicyLayer policy for waf_check_request. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides waf_check_request? +

waf_check_request is provided by the Hospital WAF MCP server (12211725-star/hospital-waf-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Hospital WAF, and thousands of servers like it.

This server

All 4 Hospital WAF tools →

Across the catalogue

The MCP Attack Database →

Guides

Roll out MCP under one policy →Data exfiltration →MCP token cost →