Subtract two numbers
AI agents call subtract to retrieve information from MCP Server & Client Test Environment without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs arithmetic subtraction on two numbers. It only computes and returns a result without reading from, writing to, or affecting any external system or data store. Classified as Read (pure computation) with low severity since misuse has no meaningful blast radius.
From the tool's definition Tool name 'subtract' and description 'Subtract two numbers' indicate a pure mathematical computation with no side effects.
Attacks that exploit this kind of access
Subtract two numbers. It is categorised as a Read tool in the MCP Server & Client Test Environment MCP Server, which means it retrieves data without modifying state.
Register the MCP Server & Client Test Environment MCP server in PolicyLayer and add a rule for subtract: 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 Server & Client Test Environment. Nothing to install.
subtract 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 subtract 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 subtract. 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.
subtract is provided by the MCP Server & Client Test Environment MCP server (mayur11235/lets-mcp). 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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