listDimensionGroups
List the row and column groups of a spreadsheet, with each group's range, nesting depth and collapsed state. Ranges are reported as 0-based half-open intervals, exactly as addDimensionGroup, deleteDimensionGroup and updateDimensionGroup take them.
This record as markdown: /tools/ark7-google-drive-mcp/listdimensiongroups.md
What listDimensionGroups does on Google Drive
AI agents call listDimensionGroups to retrieve information from Google Drive without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
account | string | — | Alias of the Google account to target. Optional — defaults to the session/global default account, or the sole authenticated account. Run manage_accounts list to |
sheetId | number | — | Limit to one sheet by ID; omit to list every sheet |
spreadsheetId | string | Yes | Spreadsheet ID |
Parameters from the server's own tool schema.
Why listDimensionGroups is rated Low
Even though listDimensionGroups only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.
Attacks that exploit this kind of access
The rule that runs listDimensionGroups safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Google Drive, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For listDimensionGroups, this is the rule to start with:
listDimensionGroups is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Google Drive, apply this rule, and every listDimensionGroups call is checked against it from then on.
Questions about listDimensionGroups
List the row and column groups of a spreadsheet, with each group's range, nesting depth and collapsed state. Ranges are reported as 0-based half-open intervals, exactly as addDimensionGroup, deleteDimensionGroup and updateDimensionGroup take them. It is categorised as a Read tool in the Google Drive MCP Server, which means it retrieves data without modifying state.
listDimensionGroups accepts 3 parameters: account, sheetId, spreadsheetId. Required: spreadsheetId. The full parameter table on this page comes from the server's own tool schema.
Register the Google Drive MCP server in PolicyLayer and add a rule for listDimensionGroups: 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 Google Drive. Nothing to install.
listDimensionGroups 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 listDimensionGroups 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 listDimensionGroups. 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.
listDimensionGroups is provided by the Google Drive MCP server (@ark7/google-drive-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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