AI agents call robot_health to retrieve information from Opentrons MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves diagnostic and status information about the robot's health and connectivity. It performs no mutations, executions of protocols, physical movements, or destructive operations. The action is purely informational and read-only, making it a Read category tool with low severity risk.
From the tool's definition Tool name 'robot_health' and description 'Check robot health and connectivity' indicate a query operation that retrieves status information without modifying robot state or triggering physical actions.
Documented attack patterns abuse exactly the kind of access robot_health gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Opentrons MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for robot_health:
{
"version": "1",
"default": "deny",
"tools": {
"robot_health": {}
}
} robot_health is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Check robot health and connectivity. It is categorised as a Read tool in the Opentrons MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Opentrons MCP Server MCP server in PolicyLayer and add a rule for robot_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 Opentrons MCP Server. Nothing to install.
robot_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 robot_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 robot_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.
robot_health is provided by the Opentrons MCP Server MCP server (yerbymatey/opentrons-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Opentrons MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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14 Opentrons MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.