比较两个文件。
AI agents call mcp_file_compare to retrieve information from ShowDoc MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
File comparison is a read-only operation that examines data from two sources and reports differences. It has no side effects, does not execute code, does not modify or delete data, and does not involve financial transactions. The blast radius of misuse is minimal—an attacker could only learn about file differences, not alter systems or data.
From the tool's definition Tool name is 'mcp_file_compare' and description states '比较两个文件' (compare two files). This operation retrieves and analyzes file contents to identify differences without modifying, deleting, or executing anything.
Attacks that exploit this kind of access
比较两个文件。. It is categorised as a Read tool in the ShowDoc MCP Server MCP Server, which means it retrieves data without modifying state.
Register the ShowDoc MCP Server MCP server in PolicyLayer and add a rule for mcp_file_compare: 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 ShowDoc MCP Server. Nothing to install.
mcp_file_compare 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 mcp_file_compare 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 mcp_file_compare. 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.
mcp_file_compare is provided by the ShowDoc MCP Server MCP server (yfcyfc123234/showdoc_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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