AI agents call get_calendar to retrieve information from Curistat without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a read-only retrieval of economic calendar information. However, severity is elevated to 'medium' rather than 'low' because in a financial trading context, access to economic calendar data (especially unfiltered or in real-time) combined with the sibling tools (get_forecast_today, get_forecast_week, get_signals, get_regime, etc.) could be misused by an AI agent to make unauthorized or poorly-reasoned trading…
From the tool's definition Tool description states 'Get the economic calendar for the next N days (1-30)' — retrieves calendar data without modifying or executing anything. Pure query operation.
Attacks that exploit this kind of access
Get the economic calendar for the next N days (1-30). It is categorised as a Read tool in the Curistat MCP Server, which means it retrieves data without modifying state.
Register the Curistat 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 Curistat. 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 Curistat MCP server (moxiespirit/curistat-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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