AI agents call outlook_list_folders to retrieve information from Sage MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves metadata about a user's mail folder structure without creating, modifying, deleting, or executing any operations. It is a read-only query operation with minimal blast radius even if misused by an AI agent, as it only exposes folder names and structure that an authenticated user already has access to.
From the tool's definition Tool name 'outlook_list_folders' and description 'List all mail folders in the user' indicate a query/retrieval operation with no modification, deletion, or execution of external actions.
Documented attack patterns abuse exactly the kind of access outlook_list_folders gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Sage MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for outlook_list_folders:
{
"version": "1",
"default": "deny",
"tools": {
"outlook_list_folders": {}
}
}outlook_list_folders is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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List all mail folders in the user. It is categorised as a Read tool in the Sage MCP MCP Server, which means it retrieves data without modifying state.
Register the Sage MCP server in PolicyLayer and add a rule for outlook_list_folders: 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 Sage MCP. Nothing to install.
outlook_list_folders 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 outlook_list_folders 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 outlook_list_folders. 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.
outlook_list_folders is provided by the Sage MCP server (sagemcp/sagemcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 359 Sage MCP tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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359 Sage MCP tools catalogued and risk-classified — across an index of 42,500+ MCP servers.