AI agents call search-contacts to retrieve information from Apple Mail without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Search operations retrieve data without side effects. Although the description is empty (lowering confidence slightly), the tool name and server context (Apple Mail contact management) indicate this performs a query against stored contacts. No modification, deletion, or execution of external operations is implied.
From the tool's definition Tool name 'search-contacts' indicates a query/search operation. Server context shows this MCP server manages Apple Mail, where searching contacts is a read-only operation that retrieves contact information without modification.
Documented attack patterns abuse exactly the kind of access search-contacts gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Apple Mail, and nothing reaches the server without passing your rules. This is the rule we recommend for search-contacts:
{
"version": "1",
"default": "deny",
"tools": {
"search-contacts": {}
}
}search-contacts is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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search-contacts. It is categorised as a Read tool in the Apple Mail MCP Server, which means it retrieves data without modifying state.
Register the Apple Mail MCP server in PolicyLayer and add a rule for search-contacts: 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 Apple Mail. Nothing to install.
search-contacts 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-contacts 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-contacts. 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-contacts is provided by the Apple Mail MCP server (sweetrb/apple-mail-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 40 Apple Mail tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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40 Apple Mail tools catalogued and risk-classified — across an index of 42,500+ MCP servers.