Get an agenda view of tasks that have due dates. Shows overdue and upcoming tasks grouped by urgency.
AI agents call get_calendar to retrieve information from Vikunja MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool retrieves and displays calendar/agenda data in read-only fashion. It queries existing tasks and presents them grouped by urgency, but does not create, modify, delete, or execute any operations. This is a straightforward Read operation with minimal risk if misused by an AI agent—the worst case is accessing existing task information the user already has visibility into.
From the tool's definition Tool name is 'get_calendar' and description states it 'Get[s] an agenda view of tasks that have due dates. Shows overdue and upcoming tasks grouped by urgency.' This is a retrieval operation with no modification, creation, deletion, or execution of code.
Attacks that exploit this kind of access
Get an agenda view of tasks that have due dates. Shows overdue and upcoming tasks grouped by urgency. It is categorised as a Read tool in the Vikunja MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Vikunja MCP Server MCP server in PolicyLayer and add a rule for get_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 Vikunja MCP Server. Nothing to install.
get_calendar 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_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 get_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.
get_calendar is provided by the Vikunja MCP Server MCP server (lindenlion/vikunja-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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