AI agents call radarr_get_calendar to retrieve information from Nas without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool fetches calendar data about movie releases from Radarr. It is purely informational—it reads and returns scheduling information without creating, modifying, deleting, or executing anything. No state changes or external actions occur. Blast radius is minimal; misuse would only expose already-available calendar metadata.
From the tool's definition Tool name 'radarr_get_calendar' and description 'Récupère le calendrier des sorties de films' (Retrieves the calendar of movie releases) indicate a query/retrieval operation with no side effects.
Attacks that exploit this kind of access
Récupère le calendrier des sorties de films. It is categorised as a Read tool in the Nas MCP Server, which means it retrieves data without modifying state.
Register the Nas MCP server in PolicyLayer and add a rule for radarr_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 Nas. Nothing to install.
radarr_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 radarr_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 radarr_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.
radarr_get_calendar is provided by the Nas MCP server (matthieurosset/nas-mcp-server). 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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