AI agents call gandi_mailbox_list_slots to retrieve information from Gandi 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 to retrieve mailbox slot information. It queries existing data (purchased capacity) without creating, modifying, deleting, or executing any changes. The blast radius of misuse is minimal—an unauthorized listing of mailbox slots would expose billing/capacity metadata but cannot directly compromise data integrity, execute code, or cause financial transactions.
From the tool's definition Tool name contains 'list' and description states 'List mailbox slots' — a query operation that retrieves information about purchased mailbox capacity with no modification or side effects.
Attacks that exploit this kind of access
List mailbox slots (purchased capacity for the mailbox product). It is categorised as a Read tool in the Gandi MCP Server, which means it retrieves data without modifying state.
Register the Gandi MCP server in PolicyLayer and add a rule for gandi_mailbox_list_slots: 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 Gandi. Nothing to install.
gandi_mailbox_list_slots 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 gandi_mailbox_list_slots 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 gandi_mailbox_list_slots. 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.
gandi_mailbox_list_slots is provided by the Gandi MCP server (millsymills-com/gandi-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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