获取 coremail 用户 user_at_domain 的用户的别名信息
AI agents call getSmtpAlias to retrieve information from MCP-YNU FastMCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves SMTP alias information for email users. The verb '获取' (get/fetch) and the absence of any modification, deletion, or execution language indicate a read-only operation. The sibling tools include addSmtpAlias and delSmtpAlias which handle write and destructive operations, further confirming this tool's read-only nature.
From the tool's definition Tool name 'getSmtpAlias' and description '获取 coremail 用户 user_at_domain 的用户的别名信息' (Get alias information for coremail user user_at_domain) indicate data retrieval with no modification capability.
Attacks that exploit this kind of access
获取 coremail 用户 user_at_domain 的用户的别名信息. It is categorised as a Read tool in the MCP-YNU FastMCP Server MCP Server, which means it retrieves data without modifying state.
Register the MCP-YNU FastMCP Server MCP server in PolicyLayer and add a rule for getSmtpAlias: 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-YNU FastMCP Server. Nothing to install.
getSmtpAlias 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 getSmtpAlias 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 getSmtpAlias. 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.
getSmtpAlias is provided by the MCP-YNU FastMCP Server MCP server (ynu/mcp-ynu). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
Teams ship this data inside their own products. See what a licence covers →