Check the health status of the MCP server. Returns server status, cache statistics,
AI agents call health_check to retrieve information from Markdown For Agents without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves diagnostic information about the server's operational state and performance metrics (cache statistics). It has no side effects, does not modify data, does not execute external code or commands, and does not access or retrieve external content. It is purely informational and falls squarely into the Read category with low severity due to its limited scope and non-sensitive nature of health metrics.
From the tool's definition Tool name 'health_check' with description 'Check the health status of the MCP server. Returns server status, cache statistics' indicates a read-only diagnostic operation that queries internal metrics without modifying or executing external operations.
Attacks that exploit this kind of access
Check the health status of the MCP server. Returns server status, cache statistics,. It is categorised as a Read tool in the Markdown For Agents MCP Server, which means it retrieves data without modifying state.
Register the Markdown For Agents 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 Markdown For Agents. 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 Markdown For Agents MCP server (johnnyfoulds/markdown-for-agents-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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