计算正切值（角度制）
AI agents call tan to retrieve information from Math Calculation MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a basic trigonometric function that takes numeric input and returns a computed result. It has no capability to modify state, delete data, execute arbitrary code, or trigger external actions. The tool is read-only in nature—it performs a stateless mathematical calculation and returns the result without any reversible or irreversible effects on system state or data.
From the tool's definition Tool name 'tan' and description '计算正切值（角度制）' [calculate tangent value in degrees] indicates a pure mathematical computation function that retrieves/returns the tangent of an angle with no side effects, data modification, or external operations.
Attacks that exploit this kind of access
计算正切值（角度制）. It is categorised as a Read tool in the Math Calculation MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Math Calculation MCP Server MCP server in PolicyLayer and add a rule for tan: 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 Math Calculation MCP Server. Nothing to install.
tan 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 tan 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 tan. 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.
tan is provided by the Math Calculation MCP Server MCP server (k-summer/math_mcps). 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.
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