AI agents use calendar_create_calendar 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 creates a new calendar, which is a reversible write operation. It does not delete data (Destructive), execute arbitrary code (Execute), involve financial transactions (Financial), or retrieve data without modification (Read). Creating a calendar is a standard data creation action with no side effects beyond the calendar's existence.
From the tool's definition Tool name 'calendar_create_calendar' and description 'Create a new Synology Calendar' indicate creation of a new calendar resource.
Documented attack patterns abuse exactly the kind of access calendar_create_calendar 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 calendar_create_calendar:
{
"version": "1",
"default": "deny",
"tools": {
"calendar_create_calendar": {
"limits": [
{
"counter": "calendar_create_calendar_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}calendar_create_calendar 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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Create a new Synology Calendar. 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 calendar_create_calendar: 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.
calendar_create_calendar 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 calendar_create_calendar 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 calendar_create_calendar. 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.
calendar_create_calendar 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.