單位轉換（長度、重量、溫度等）
AI agents call convert_units to retrieve information from Node Js MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Unit conversion is a pure mathematical transformation with no side effects, no data modification, no external operations. It reads/accepts an input value and returns a converted output. No data is written, deleted, or executed. Severity is low as misuse has negligible blast radius.
From the tool's definition 單位轉換（長度、重量、溫度等）— translates to 'Unit conversion (length, weight, temperature, etc.)'
Attacks that exploit this kind of access
單位轉換（長度、重量、溫度等）. It is categorised as a Read tool in the Node Js MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Node Js MCP Server MCP server in PolicyLayer and add a rule for convert_units: 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 Node Js MCP Server. Nothing to install.
convert_units 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 convert_units 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 convert_units. 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.
convert_units is provided by the Node Js MCP Server MCP server (weiweicode/20250923mcptest). 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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