Subtracts the second number from the first number.
AI agents call Subtraction to retrieve information from Mcp Examples without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a pure computational function that returns a result without creating, modifying, deleting, or executing any external operations. It retrieves a calculated value only, making it a Read category tool with minimal risk.
From the tool's definition Tool performs a mathematical subtraction operation (subtracts second number from first) with no side effects, no data modification, and no external state changes.
Attacks that exploit this kind of access
Subtracts the second number from the first number. It is categorised as a Read tool in the Mcp Examples MCP Server, which means it retrieves data without modifying state.
Register the Mcp Examples MCP server in PolicyLayer and add a rule for Subtraction: 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 Examples. Nothing to install.
Subtraction 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 Subtraction 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 Subtraction. 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.
Subtraction is provided by the Mcp Examples MCP server (psyll0n/mcp-examples). 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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