Return the PreFormServer API version. Use this to confirm the server is reachable.
AI agents call health_check to retrieve information from Formlabs Local without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a diagnostic/health check tool that retrieves status information about the server. It has no side effects, does not modify any state, and cannot be misused to cause harm. It is clearly a Read operation with minimal blast radius.
From the tool's definition Tool returns PreFormServer API version without making any modifications or executing operations. The description states 'Return the PreFormServer API version' and 'confirm the server is reachable' - both read-only operations.
Attacks that exploit this kind of access
Return the PreFormServer API version. Use this to confirm the server is reachable. It is categorised as a Read tool in the Formlabs Local MCP Server, which means it retrieves data without modifying state.
Register the Formlabs Local 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 Formlabs Local. 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 Formlabs Local MCP server (mkebiclioglu/formlabs-local-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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