AI agents call shodan_dns to retrieve information from Shodan without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
DNS queries are read-only operations that retrieve domain-to-IP mappings without modifying data or executing code. The 'passive reconnaissance' framing and gating against HackerOne scope further indicates this returns information only. Confidence is 0.75 rather than higher because the tool description is empty, leaving some ambiguity about whether it might perform unexpected operations.
From the tool's definition Tool name 'shodan_dns' suggests DNS query functionality, consistent with sibling tool descriptions mentioning 'DNS queries'. The parent server description confirms 'passive reconnaissance' and 'DNS queries' as core features.
Attacks that exploit this kind of access
shodan_dns. It is categorised as a Read tool in the Shodan MCP Server, which means it retrieves data without modifying state.
Register the Shodan MCP server in PolicyLayer and add a rule for shodan_dns: 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 Shodan. Nothing to install.
shodan_dns 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 shodan_dns 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 shodan_dns. 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.
shodan_dns is provided by the Shodan MCP server (tobiasguta/shodan-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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