List all mailboxes in Help Scout
AI agents call inbox_list_mailboxes to retrieve information from MCP Help Scout without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves a list of existing mailboxes from the Help Scout system. 'List' operations are read-only queries that return information without creating, modifying, deleting, or executing any changes. The blast radius of misuse is minimal—an attacker gains visibility into mailbox configuration but cannot alter customer data, communications, or system state.
From the tool's definition Tool name 'inbox_list_mailboxes' and description 'List all mailboxes in Help Scout' indicate a query/retrieval operation with no data modification or side effects.
Attacks that exploit this kind of access
List all mailboxes in Help Scout. It is categorised as a Read tool in the MCP Help Scout MCP Server, which means it retrieves data without modifying state.
Register the MCP Help Scout MCP server in PolicyLayer and add a rule for inbox_list_mailboxes: 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 MCP Help Scout. Nothing to install.
inbox_list_mailboxes 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 inbox_list_mailboxes 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 inbox_list_mailboxes. 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.
inbox_list_mailboxes is provided by the MCP Help Scout MCP server (solveitsimply/mcp-helpscout). 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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