计算两个数字的和
AI agents call add to retrieve information from Simple Calculator MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs basic addition of two numbers. It only computes and returns a result, with no data storage, modification, execution, or financial implications. It is a pure read/query-style operation with minimal blast radius.
From the tool's definition 计算两个数字的和 (Calculate the sum of two numbers) — pure arithmetic computation with no side effects
Attacks that exploit this kind of access
计算两个数字的和. It is categorised as a Read tool in the Simple Calculator MCP MCP Server, which means it retrieves data without modifying state.
Register the Simple Calculator MCP server in PolicyLayer and add a rule for add: 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 Simple Calculator MCP. Nothing to install.
add 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 add 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 add. 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.
add is provided by the Simple Calculator MCP server (sanlanglove/mcp-calculator). 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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