Simple health check endpoint
AI agents call health_check to retrieve information from Looker Admin MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
A health check endpoint retrieves system status information and produces no side effects. This is a read-only diagnostic operation with minimal blast radius if misused—an agent could only spam requests or receive false status information, neither of which causes harm.
From the tool's definition Tool name 'health_check' and description 'Simple health check endpoint' indicate a query-only operation that checks system status without modifying state or executing external operations.
Attacks that exploit this kind of access
Simple health check endpoint. It is categorised as a Read tool in the Looker Admin MCP MCP Server, which means it retrieves data without modifying state.
Register the Looker Admin 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 Looker Admin 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 Looker Admin MCP server (kokevidaurre/looker-admin-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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