detect_technologies
AI agents call detect_technologies to retrieve information from MCP Recon without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool appears to perform technology detection/fingerprinting on web applications, which is a passive reconnaissance technique that retrieves information about target systems (frameworks, servers, libraries, etc.). It creates no side effects, modifies no data, and executes no external code on behalf of the user.
From the tool's definition Tool name 'detect_technologies' and context of a web security reconnaissance server suggest passive information gathering. Sibling tools like 'dns_records', 'http_headers', and 'ip_information' are all Read operations.
Documented attack patterns abuse exactly the kind of access detect_technologies gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and MCP Recon, and nothing reaches the server without passing your rules. This is the rule we recommend for detect_technologies:
{
"version": "1",
"default": "deny",
"tools": {
"detect_technologies": {}
}
}detect_technologies is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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detect_technologies. It is categorised as a Read tool in the MCP Recon MCP Server, which means it retrieves data without modifying state.
Register the MCP Recon MCP server in PolicyLayer and add a rule for detect_technologies: 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 MCP Recon. Nothing to install.
detect_technologies 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 detect_technologies 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 detect_technologies. 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.
detect_technologies is provided by the MCP Recon MCP server (sundayz-hunter/mcp_recon). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from MCP Recon, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
13 MCP Recon tools catalogued and risk-classified — across an index of 43,000+ MCP servers.