create_xls · Xls Mcp Servers MCP: Risk & Policy

WHAT IT DOES

What create_xls does on Xls Mcp Servers

AI agents use create_xls to create or update resources in Xls Mcp Servers — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Xls Mcp Servers environment.

WHY IT NEEDS A POLICY

Why create_xls needs a policy

This tool creates new Excel files, which is a reversible write operation. It does not execute arbitrary code, delete data, or involve financial transactions. The severity is medium because creating files could consume storage resources or be used to generate misleading documents, but the impact is contained and reversible.

From the tool's definition Tool name 'create_xls' and description '创建新的 .xls Excel 文件' (create new .xls Excel file) indicate creation of new data files. Server context confirms this is part of an Excel manipulation suite with read/write/update capabilities.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_xls Rate-limited

create_xls stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "create_xls": {
      "limits": [
        {
          "counter": "create_xls_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Xls Mcp Servers, so you can run agents against it safely.

FAQ

Questions about create_xls

What does the create_xls tool do? +

创建新的 .xls Excel 文件. It is categorised as a Write tool in the Xls Mcp Servers MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create_xls? +

Register the Xls Mcp Servers MCP server in PolicyLayer and add a rule for create_xls: 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 Xls Mcp Servers. Nothing to install.

What risk level is create_xls? +

create_xls is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit create_xls? +

Yes. Add a rate_limit block to the create_xls 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.

How do I block create_xls completely? +

Set action: deny in the PolicyLayer policy for create_xls. 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.

What MCP server provides create_xls? +

create_xls is provided by the Xls Mcp Servers MCP server (lincyghb/xls-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.