dns_check
AI agents call dns_check to retrieve information from Hacking Buddy MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
DNS checks are typically read operations that query DNS records without side effects. The sibling tool 'check_dns_info' reinforces this interpretation. However, the empty description lowers confidence, and the offensive security context of the server means the tool could potentially be used for reconnaissance. Still, DNS querying is fundamentally a read operation with medium severity given the reconnaissance context.
From the tool's definition Tool name 'dns_check' and sibling tool 'check_dns_info' suggest DNS lookup/query functionality; description is empty providing no further detail.
Attacks that exploit this kind of access
dns_check. It is categorised as a Read tool in the Hacking Buddy MCP MCP Server, which means it retrieves data without modifying state.
Register the Hacking Buddy MCP server in PolicyLayer and add a rule for dns_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 Hacking Buddy MCP. Nothing to install.
dns_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 dns_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 dns_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.
dns_check is provided by the Hacking Buddy MCP server (manuelberrueta/hacking-buddy-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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