AI agents call search_contact to retrieve information from MCP Outlook Tools 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 search operation to locate contacts by name. It retrieves data from Outlook's contact database but does not create, modify, delete, or execute any actions. The blast radius of misuse is minimal—an attacker could enumerate contacts but cannot alter them or trigger external operations. This is a classic Read category tool.
From the tool's definition Tool name 'search_contact' and description 'Search for a contact in Outlook by name' indicate a query operation that retrieves contact information without modification or side effects.
Documented attack patterns abuse exactly the kind of access search_contact gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and MCP Outlook Tools, and nothing reaches the server without passing your rules. This is the rule we recommend for search_contact:
{
"version": "1",
"default": "deny",
"tools": {
"search_contact": {}
}
}search_contact is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Search for a contact in Outlook by name. It is categorised as a Read tool in the MCP Outlook Tools MCP Server, which means it retrieves data without modifying state.
Register the MCP Outlook Tools MCP server in PolicyLayer and add a rule for search_contact: 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 Outlook Tools. Nothing to install.
search_contact 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 search_contact 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 search_contact. 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.
search_contact is provided by the MCP Outlook Tools MCP server (wmoto-ai/mcp-outlook-tools). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from MCP Outlook Tools, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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6 MCP Outlook Tools tools catalogued and risk-classified — across an index of 43,000+ MCP servers.