Get the availability calendar for a single listing across a date range. Returns per-day availability, status, price, minimum stay, and reserved/blocked counts. Use this to answer
AI agents call list_calendar to retrieve information from Hostaway-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 property calendar information without side effects. It is a read-only operation that retrieves existing data for a listing across a date range. The low severity reflects minimal blast radius: calendar data is informational and its unauthorized retrieval poses no direct risk to financial systems, reservations, or property state.
From the tool's definition Tool retrieves calendar availability data including status, price, and counts. The description explicitly states it "Get[s] the availability calendar" and the server is described as providing "10 read-only tools." No modification, deletion, or external…
Attacks that exploit this kind of access
Get the availability calendar for a single listing across a date range. Returns per-day availability, status, price, minimum stay, and reserved/blocked counts. Use this to answer. It is categorised as a Read tool in the Hostaway-mcp MCP Server, which means it retrieves data without modifying state.
Register the Hostaway- MCP server in PolicyLayer and add a rule for list_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 Hostaway-mcp. Nothing to install.
list_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 list_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 list_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.
list_calendar is provided by the Hostaway- MCP server (prosperkartik/hostaway-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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