Appends text to the very end of a specific Google Document or tab.
AI agents use appendToGoogleDoc to create or update resources in Google Docs & Drive MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Google Docs & Drive MCP Server environment.
This tool creates or modifies data (appending text to a document) in a reversible manner, fitting the Write category. Severity is medium because misuse could modify important documents, but the changes are not irreversible like Destructive actions, and the blast radius is limited to document content rather than infrastructure or financial systems.
From the tool's definition Tool name 'appendToGoogleDoc' and description 'Appends text to the very end of a specific Google Document' indicate modification of document content.
Attacks that exploit this kind of access
Appends text to the very end of a specific Google Document or tab. It is categorised as a Write tool in the Google Docs & Drive MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Google Docs & Drive MCP Server MCP server in PolicyLayer and add a rule for appendToGoogleDoc: 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 Docs & Drive MCP Server. Nothing to install.
appendToGoogleDoc 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 appendToGoogleDoc 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 appendToGoogleDoc. 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.
appendToGoogleDoc is provided by the Google Docs & Drive MCP Server MCP server (oregpt/agenticledger_mcp_docsonly). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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