Health-check tool — confirms credentials work and returns a quick summary of the connected Hostaway account: counts of listings, reservations, conversations, owner statements, and users. Use this first when setting up to verify the connection.
AI agents call whoami 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.
The `whoami` tool retrieves and queries account metadata only—it does not create, modify, delete, execute code, or commit financial transactions. It is explicitly described as a 'health-check tool' for verification purposes. The low severity reflects minimal blast radius: an agent calling this tool can only read account summary data, which poses negligible risk.
From the tool's definition Tool description states it 'confirms credentials work and returns a quick summary' of account counts (listings, reservations, conversations, owner statements, users). This is purely informational with no side effects.
Attacks that exploit this kind of access
Health-check tool — confirms credentials work and returns a quick summary of the connected Hostaway account: counts of listings, reservations, conversations, owner statements, and users. Use this first when setting up to verify the connection. 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 whoami: 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.
whoami 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 whoami 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 whoami. 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.
whoami 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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