Lists inbox rules in your Outlook account
AI agents call list-rules to retrieve information from Outlook Assistant without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves inbox rule information, which is a read operation with no side effects. However, inbox rules can reveal sensitive information about email filtering and forwarding logic (e.g., rules that auto-forward emails to external addresses, auto-delete patterns, or rules tied to sensitive workflows). Misuse could expose security configurations or aid in understanding how to evade email filters.
From the tool's definition Tool name is 'list-rules' and description states it 'Lists inbox rules in your Outlook account' — a read operation that retrieves configuration data without modifying it.
Attacks that exploit this kind of access
Lists inbox rules in your Outlook account. It is categorised as a Read tool in the Outlook Assistant MCP Server, which means it retrieves data without modifying state.
Register the Outlook Assistant MCP server in PolicyLayer and add a rule for list-rules: 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 Outlook Assistant. Nothing to install.
list-rules 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-rules 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-rules. 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-rules is provided by the Outlook Assistant MCP server (titanzero/outlook-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
list-rules is one line of Outlook Assistant's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
Teams ship this data inside their own products. See what a licence covers →