Insert or delete rows/columns in a Synology Spreadsheet. Provide either file_id or name. Set confirm=true to execute.
AI agents use spreadsheet_batch_update to create or update resources in Synology Office — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Synology Office environment.
This tool modifies spreadsheet structure reversibly—rows and columns can be inserted and deleted, but these operations are not irreversibly destructive like deleting entire files or data. While deletion of rows/columns removes data, the operation can be undone (undo functionality is standard in spreadsheets, and backups exist in Synology Drive).
From the tool's definition Tool description explicitly states 'Insert or delete rows/columns' in a spreadsheet, with a confirm flag to execute the operation. The name 'spreadsheet_batch_update' and description focus on structural modifications (insert/delete rows/columns).
Documented attack patterns abuse exactly the kind of access spreadsheet_batch_update gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Synology Office, and nothing reaches the server without passing your rules. This is the rule we recommend for spreadsheet_batch_update:
{
"version": "1",
"default": "deny",
"tools": {
"spreadsheet_batch_update": {
"limits": [
{
"counter": "spreadsheet_batch_update_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}spreadsheet_batch_update 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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Insert or delete rows/columns in a Synology Spreadsheet. Provide either file_id or name. Set confirm=true to execute. It is categorised as a Write tool in the Synology Office MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Synology Office MCP server in PolicyLayer and add a rule for spreadsheet_batch_update: 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 Synology Office. Nothing to install.
spreadsheet_batch_update 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 spreadsheet_batch_update 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 spreadsheet_batch_update. 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.
spreadsheet_batch_update is provided by the Synology Office MCP server (vocweb/synology-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Synology Office, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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39 Synology Office tools catalogued and risk-classified — across an index of 43,000+ MCP servers.