Remove event listener
AI agents use gridstack_off to create or update resources in GridStack MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your GridStack MCP Server environment.
Removing an event listener modifies the state of the application by detaching a previously registered callback. This is a reversible modification (the listener can be re-added), placing it in the Write category. The blast radius is low since misuse at most causes missed events rather than data loss or financial harm.
From the tool's definition Tool name 'gridstack_off' and description 'Remove event listener'
Attacks that exploit this kind of access
Remove event listener. It is categorised as a Write tool in the GridStack MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the GridStack MCP Server MCP server in PolicyLayer and add a rule for gridstack_off: 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 GridStack MCP Server. Nothing to install.
gridstack_off is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the gridstack_off 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 gridstack_off. 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.
gridstack_off is provided by the GridStack MCP Server MCP server (raghavsharma-simpplr/gridstack-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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