Return server health and runtime configuration.
AI agents call health_check to retrieve information from AI App MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a diagnostic/status tool that retrieves and reports server state without side effects. It matches the Read category pattern of querying data without causing state changes. Severity is low because misuse poses no blast radius—an AI agent calling this repeatedly or at any time cannot harm the system or data.
From the tool's definition Tool returns server health and runtime configuration with no modification or execution described. The verb 'Return' and noun 'health' indicate a passive data retrieval operation.
Attacks that exploit this kind of access
Return server health and runtime configuration. It is categorised as a Read tool in the AI App MCP MCP Server, which means it retrieves data without modifying state.
Register the AI App MCP server in PolicyLayer and add a rule for health_check: 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 AI App MCP. Nothing to install.
health_check 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 health_check 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 health_check. 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.
health_check is provided by the AI App MCP server (yh008/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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