security_headers_check
AI agents call security_headers_check to retrieve information from CyberMCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Security header checking is a reconnaissance activity that queries and analyzes response headers for misconfigurations or missing security controls. It does not modify data, execute arbitrary code, delete resources, or move money. It is fundamentally a Read operation—retrieving and assessing header values to identify potential vulnerabilities.
From the tool's definition Tool name 'security_headers_check' indicates inspection/verification of HTTP security headers; combined with the server's stated purpose of testing for vulnerabilities, this is a non-destructive analysis tool.
Documented attack patterns abuse exactly the kind of access security_headers_check gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and CyberMCP, and nothing reaches the server without passing your rules. This is the rule we recommend for security_headers_check:
{
"version": "1",
"default": "deny",
"tools": {
"security_headers_check": {}
}
}security_headers_check is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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security_headers_check. It is categorised as a Read tool in the CyberMCP MCP Server, which means it retrieves data without modifying state.
Register the Cyber MCP server in PolicyLayer and add a rule for security_headers_check: 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 CyberMCP. Nothing to install.
security_headers_check 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 security_headers_check 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 security_headers_check. 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.
security_headers_check is provided by the Cyber MCP server (ricauts/cybermcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from CyberMCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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