AI agents call scan_headers_builtin to retrieve information from Pentest Ai without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs analysis of HTTP response headers to check for security best practices (e.g., HSTS, CSP, X-Frame-Options). Analysis is a read-only operation that retrieves and examines header data without side effects, making it a Read category tool.
From the tool's definition The tool 'scan_headers_builtin' is described as 'Analyze HTTP security headers (built-in)'. The verb 'analyze' and the object 'HTTP security headers' indicate data retrieval and inspection with no modification or execution of external code.
Documented attack patterns abuse exactly the kind of access scan_headers_builtin gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Pentest Ai, and nothing reaches the server without passing your rules. This is the rule we recommend for scan_headers_builtin:
{
"version": "1",
"default": "deny",
"tools": {
"scan_headers_builtin": {}
}
}scan_headers_builtin is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Analyze HTTP security headers (built-in). It is categorised as a Read tool in the Pentest Ai MCP Server, which means it retrieves data without modifying state.
Register the Pentest Ai MCP server in PolicyLayer and add a rule for scan_headers_builtin: 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 Pentest Ai. Nothing to install.
scan_headers_builtin 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 scan_headers_builtin 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 scan_headers_builtin. 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.
scan_headers_builtin is provided by the Pentest Ai MCP server (0xsteph/pentest-ai). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 51 Pentest Ai tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
51 Pentest Ai tools catalogued and risk-classified — across an index of 42,500+ MCP servers.