Get all calendar events for today, grouped by calendar.
AI agents call get_today to retrieve information from Fantastical MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and returns calendar event data for the current day without creating, modifying, or deleting any information. It is a straightforward read operation with minimal risk—the worst-case scenario is unauthorized access to calendar information, which is low-severity compared to destructive or financial operations.
From the tool's definition Tool name 'get_today' and description 'Get all calendar events for today' explicitly indicate data retrieval with no modification or side effects.
Documented attack patterns abuse exactly the kind of access get_today gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Fantastical MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for get_today:
{
"version": "1",
"default": "deny",
"tools": {
"get_today": {}
}
}get_today is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get all calendar events for today, grouped by calendar. It is categorised as a Read tool in the Fantastical MCP MCP Server, which means it retrieves data without modifying state.
Register the Fantastical MCP server in PolicyLayer and add a rule for get_today: 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 Fantastical MCP. Nothing to install.
get_today 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 get_today 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 get_today. 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.
get_today is provided by the Fantastical MCP server (jaydenk/fantastical-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Fantastical MCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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16 Fantastical MCP tools catalogued and risk-classified — across an index of 43,000+ MCP servers.