Detect Web Application Firewall.
AI agents call wafw00f_detect to retrieve information from Kali MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs passive discovery of WAF technologies protecting web applications. It is a Read operation because it retrieves configuration/infrastructure information without side effects. Severity is medium because while WAF detection itself is non-destructive, it provides reconnaissance data that could inform subsequent attacks; however, the tool does not execute code, modify data, or cause direct harm.
From the tool's definition Tool name 'wafw00f_detect' and description 'Detect Web Application Firewall' indicate a reconnaissance/discovery function that queries remote systems to identify defensive infrastructure.
Attacks that exploit this kind of access
Detect Web Application Firewall. It is categorised as a Read tool in the Kali MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Kali MCP Server MCP server in PolicyLayer and add a rule for wafw00f_detect: 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 Kali MCP Server. Nothing to install.
wafw00f_detect is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the wafw00f_detect 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.
Set action: deny in the PolicyLayer policy for wafw00f_detect. 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.
wafw00f_detect is provided by the Kali MCP Server MCP server (jesseeikeland/kali-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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