Find subaccounts by email address.
AI agents call find_by_email to retrieve information from Vultr MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves or queries subaccount information based on an email address parameter. It performs a read-only search operation with no side effects—it neither creates, modifies, deletes data, nor executes commands. The blast radius is minimal: an agent misusing this would only retrieve existing subaccount records, not alter infrastructure or commit resources.
From the tool's definition Tool name 'find_by_email' and description 'Find subaccounts by email address' indicate a query/lookup operation with no modification, deletion, or execution of external processes.
Documented attack patterns abuse exactly the kind of access find_by_email gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Vultr MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for find_by_email:
{
"version": "1",
"default": "deny",
"tools": {
"find_by_email": {}
}
}find_by_email is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Find subaccounts by email address. It is categorised as a Read tool in the Vultr MCP MCP Server, which means it retrieves data without modifying state.
Register the Vultr MCP server in PolicyLayer and add a rule for find_by_email: 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 MCP. Nothing to install.
find_by_email 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 find_by_email 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 find_by_email. 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.
find_by_email is provided by the Vultr MCP server (rsp2k/mcp-vultr). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Vultr MCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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284 Vultr MCP tools catalogued and risk-classified — across an index of 43,000+ MCP servers.