AI agents call list_grids to retrieve information from Ogrid without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and retrieves metadata about OGrid instances (grid IDs, row counts, pagination info, timestamps). It performs no modifications, deletions, or side effects—purely informational. Category is Read with low severity since the blast radius of misuse is limited to information disclosure about connected grid instances.
From the tool's definition Tool "list_grids" returns grid IDs, row counts, page info, and last-seen timestamps without modifying any state. The description indicates it lists and retrieves information only.
Attacks that exploit this kind of access
List OGrid instances currently connected to the live testing bridge. Returns grid IDs, row counts, page info, and last-seen timestamps. It is categorised as a Read tool in the Ogrid MCP Server, which means it retrieves data without modifying state.
Register the Ogrid MCP server in PolicyLayer and add a rule for list_grids: 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 Ogrid. Nothing to install.
list_grids 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 list_grids 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 list_grids. 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.
list_grids is provided by the Ogrid MCP server (@alaarab/ogrid-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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