Get active G-code modal state: motion mode, coordinate system, units, distance mode, spindle, coolant
AI agents call get_gcode_state to retrieve information from Cnc Fluidnc without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and returns the current state of G-code parameters without modifying any machine settings, executing commands, or affecting machine operation. It is purely informational, making it a Read category tool with low severity impact.
From the tool's definition Tool name 'get_gcode_state' and description 'Get active G-code modal state' indicate a retrieval operation with no side effects. Returns read-only information about motion mode, coordinate system, units, distance mode, spindle, and coolant settings.
Attacks that exploit this kind of access
Get active G-code modal state: motion mode, coordinate system, units, distance mode, spindle, coolant. It is categorised as a Read tool in the Cnc Fluidnc MCP Server, which means it retrieves data without modifying state.
Register the Cnc Fluidnc MCP server in PolicyLayer and add a rule for get_gcode_state: 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 Cnc Fluidnc. Nothing to install.
get_gcode_state 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 get_gcode_state 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 get_gcode_state. 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.
get_gcode_state is provided by the Cnc Fluidnc MCP server (whitneydesignlabs/cnc-fluidnc-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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