AI agents call search_attachments_tool to retrieve information from MCP Email Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves or queries files based on search criteria without modifying, deleting, or executing anything. It is a read-only operation with minimal security risk. Confidence is reduced slightly due to the empty description, but the server-level context and sibling tools clarify its function.
From the tool's definition Tool name 'search_attachments_tool' indicates it searches for files matching patterns in specified directories, per the server description. No modification, deletion, or execution capability is implied.
Documented attack patterns abuse exactly the kind of access search_attachments_tool gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and MCP Email Server, and nothing reaches the server without passing your rules. This is the rule we recommend for search_attachments_tool:
{
"version": "1",
"default": "deny",
"tools": {
"search_attachments_tool": {}
}
}search_attachments_tool is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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search_attachments_tool. It is categorised as a Read tool in the MCP Email Server MCP Server, which means it retrieves data without modifying state.
Register the MCP Email Server MCP server in PolicyLayer and add a rule for search_attachments_tool: 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 Email Server. Nothing to install.
search_attachments_tool 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_attachments_tool 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_attachments_tool. 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_attachments_tool is provided by the MCP Email Server MCP server (shy2593666979/mcp-server-email). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 4 MCP Email Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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4 MCP Email Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.