createSheetsComment
Creates a new comment in a Google Spreadsheet. When you target a specific cell or range, a click-through link to that location is added to the comment body by default (includeCellLink), letting users jump to the cell. Note: the Drive API cannot natively anchor spreadsheet comments to a cell in th...
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What createSheetsComment does on Claude MCP x Google Docs
AI agents use createSheetsComment to create or update resources in Claude MCP x Google Docs, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Claude MCP x Google Docs environment.
Why createSheetsComment is rated Medium
Creating comments is a write operation—it adds new data to the spreadsheet that persists and can be seen by other collaborators. While reversible (comments can be deleted), it modifies document state.
From the tool's definition Tool name 'createSheetsComment' and description explicitly states it 'Creates a new comment in a Google Spreadsheet.' This is a create operation that adds new content to a spreadsheet, modifying the document by appending a comment artifact.
Attacks that exploit this kind of access
The rule that runs createSheetsComment safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Claude MCP x Google Docs, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For createSheetsComment, this is the rule to start with:
createSheetsComment stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Claude MCP x Google Docs, apply this rule, and every createSheetsComment call is checked against it from then on.
Questions about createSheetsComment
Creates a new comment in a Google Spreadsheet. When you target a specific cell or range, a click-through link to that location is added to the comment body by default (includeCellLink), letting users jump to the cell. Note: the Drive API cannot natively anchor spreadsheet comments to a cell in the Sheets UI, so the comment itself appears under. It is categorised as a Write tool in the Claude MCP x Google Docs MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Claude MCP x Google Docs MCP server in PolicyLayer and add a rule for createSheetsComment: 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 Claude MCP x Google Docs. Nothing to install.
createSheetsComment 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 createSheetsComment 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 createSheetsComment. 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.
createSheetsComment is provided by the Claude MCP x Google Docs MCP server (a-bonus/google-docs-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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