health
AI agents call health to retrieve information from CTFd MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
A 'health' tool almost universally performs a health check or status query against a service, which is a read-only operation with no side effects. However, the empty description lowers confidence significantly. Given the CTFd context and sibling tools (login, challenges, submit_flag, etc.), it is most likely a status/ping endpoint.
From the tool's definition Tool name is 'health'; description is empty or uninformative.
Attacks that exploit this kind of access
health. It is categorised as a Read tool in the CTFd MCP Server MCP Server, which means it retrieves data without modifying state.
Register the CTFd MCP Server MCP server in PolicyLayer and add a rule for health: 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 CTFd MCP Server. Nothing to install.
health 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 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. 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 is provided by the CTFd MCP Server MCP server (mrjamescot/ctfd-mcp-server). 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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