Apply number formatting to cells in a Google Sheet
AI agents use formatGoogleSheetNumbers to create or update resources in Google Drive MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Google Drive MCP Server environment.
This tool modifies spreadsheet cell formatting (number format styles), which is a reversible Write operation. It does not execute code, delete data, move money, or trigger external side effects—it only changes the presentation format of existing cell values. The modification is undoable (formatting can be changed again), placing it in the Write category rather than Destructive or Execute.
From the tool's definition Tool name 'formatGoogleSheetNumbers' and description 'Apply number formatting to cells in a Google Sheet' indicate modification of cell formatting properties.
Documented attack patterns abuse exactly the kind of access formatGoogleSheetNumbers gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Google Drive MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for formatGoogleSheetNumbers:
{
"version": "1",
"default": "deny",
"tools": {
"formatGoogleSheetNumbers": {
"limits": [
{
"counter": "formatgooglesheetnumbers_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}formatGoogleSheetNumbers 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.
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Apply number formatting to cells in a Google Sheet. It is categorised as a Write tool in the Google Drive MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Google Drive MCP Server MCP server in PolicyLayer and add a rule for formatGoogleSheetNumbers: 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 MCP Server. Nothing to install.
formatGoogleSheetNumbers 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 formatGoogleSheetNumbers 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 formatGoogleSheetNumbers. 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.
formatGoogleSheetNumbers is provided by the Google Drive MCP Server MCP server (piotr-agier/google-drive-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 107 Google Drive MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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107 Google Drive MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.