Lightweight tool returning ONLY structural/dimensional metadata for a sheet — no per-cell data.
AI agents call sheets_get_sheet_structure to retrieve information from Mcp Gsheets without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool purely retrieves structural information about a sheet (column count, row count, sheet names, etc.) without accessing or modifying any cell contents. This is a straightforward Read operation with minimal security risk, as metadata alone cannot cause harm and does not expose sensitive data values.
From the tool's definition Tool description states it returns 'ONLY structural/dimensional metadata for a sheet — no per-cell data.' This is a read-only retrieval of metadata (dimensions, structure) with no side effects.
Attacks that exploit this kind of access
Lightweight tool returning ONLY structural/dimensional metadata for a sheet — no per-cell data. It is categorised as a Read tool in the Mcp Gsheets MCP Server, which means it retrieves data without modifying state.
Register the Mcp Gsheets MCP server in PolicyLayer and add a rule for sheets_get_sheet_structure: 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 Mcp Gsheets. Nothing to install.
sheets_get_sheet_structure 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 sheets_get_sheet_structure 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 sheets_get_sheet_structure. 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.
sheets_get_sheet_structure is provided by the Mcp Gsheets MCP server (mcp-gsheets). 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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