创建一个新的Excel工作簿。 Args: filename: 要创建的文件名 (不需要包含.xlsx扩展名) Returns: 包含操作结果的消息
AI agents use create_excel_workbook to create or update resources in Office Editor — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Office Editor environment.
This tool creates new Excel workbook files, which is a reversible write operation. The blast radius is medium because while file creation is not inherently dangerous, an AI agent could create many files, consume storage, or create files with misleading names in shared environments. The operation is reversible (files can be deleted), so it does not qualify as Destructive.
From the tool's definition Tool description states '创建一个新的Excel工作簿' (create a new Excel workbook). The function creates a new file with a specified filename. It is a Write operation that creates data reversibly.
Documented attack patterns abuse exactly the kind of access create_excel_workbook gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Office Editor, and nothing reaches the server without passing your rules. This is the rule we recommend for create_excel_workbook:
{
"version": "1",
"default": "deny",
"tools": {
"create_excel_workbook": {
"limits": [
{
"counter": "create_excel_workbook_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}create_excel_workbook 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.
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创建一个新的Excel工作簿。 Args: filename: 要创建的文件名 (不需要包含.xlsx扩展名) Returns: 包含操作结果的消息. It is categorised as a Write tool in the Office Editor MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Office Editor MCP server in PolicyLayer and add a rule for create_excel_workbook: 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 Office Editor. Nothing to install.
create_excel_workbook is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the create_excel_workbook 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 create_excel_workbook. 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.
create_excel_workbook is provided by the Office Editor MCP server (thewdy/office-editor-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 88 Office Editor tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
88 Office Editor tools catalogued and risk-classified — across an index of 42,500+ MCP servers.