AI agents call list_dns_domains to retrieve information from Vultr Dns without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a read-only operation that lists DNS domains. It has no side effects, does not create, modify, or delete data, and does not execute code or trigger external operations. The blast radius of misuse is minimal—an attacker gains visibility into the account's DNS infrastructure but cannot modify or delete records. Classified as Read with low severity.
From the tool's definition Tool name 'list_dns_domains' and description 'List all DNS domains in your Vultr account' indicate a query operation that retrieves existing data without modification or deletion.
Attacks that exploit this kind of access
List all DNS domains in your Vultr account. It is categorised as a Read tool in the Vultr Dns MCP Server, which means it retrieves data without modifying state.
Register the Vultr Dns MCP server in PolicyLayer and add a rule for list_dns_domains: 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 Vultr Dns. Nothing to install.
list_dns_domains 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 list_dns_domains 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 list_dns_domains. 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.
list_dns_domains is provided by the Vultr Dns MCP server (rsp2k/vultr-dns-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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