applyTextStyle

Apply text formatting (bold, italic, color, etc.) to a range or found text. Use EITHER startIndex+endIndex OR textToFind for targeting.

SERVERGoogle Drive SOURCE@ark7/google-drive-mcp

Medium RISK CLASS

Category Write

Parameters 121 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/ark7-google-drive-mcp/applytextstyle.md

WHAT IT DOES

What applyTextStyle does on Google Drive

AI agents use applyTextStyle to create or update resources in Google Drive, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Google Drive environment.

Parameter	Type	Required	Description
`bold`	boolean	—	Make text bold
`tabId`	string	—	Optional. Tab ID to format within (from listDocumentTabs). If omitted, operates on the first/default tab.
`italic`	boolean	—	Make text italic
`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
`linkUrl`	string	—	URL for hyperlink
`endIndex`	number	—	End index (exclusive) - use with startIndex
`fontSize`	number	—	Font size in points
`underline`	boolean	—	Underline text
`documentId`	string	Yes	The document ID
`fontFamily`	string	—	Font family name
`startIndex`	number	—	Start index (1-based) - use with endIndex
`textToFind`	string	—	Text to find and format (alternative to indices)

Parameters from the server's own tool schema.

RISK

Why applyTextStyle is rated Medium

This tool creates or modifies document data reversibly. Text formatting changes can be undone and do not permanently destroy data or execute arbitrary code. It affects Google Docs/Sheets content but is narrowly scoped to cosmetic formatting rather than structural changes or data deletion.

From the tool's definition Tool description states 'Apply text formatting' which modifies document content. The mechanism uses 'startIndex+endIndex OR textToFind for targeting' to select and alter text properties (bold, italic, color, etc.).

Risk signalsHigh parameter count (18 properties)

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs applyTextStyle 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 applyTextStyle, this is the rule to start with:

applyTextStyle Rate-limited

applyTextStyle 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "applyTextStyle": {
      "limits": [
        {
          "counter": "applytextstyle_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Google Drive, apply this rule, and every applyTextStyle call is checked against it from then on.

FAQ

Questions about applyTextStyle

What does the applyTextStyle tool do? +

Apply text formatting (bold, italic, color, etc.) to a range or found text. Use EITHER startIndex+endIndex OR textToFind for targeting. It is categorised as a Write tool in the Google Drive MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

What parameters does applyTextStyle accept? +

applyTextStyle accepts 12 parameters: bold, tabId, italic, account, linkUrl, endIndex, fontSize, underline, documentId, fontFamily, startIndex, textToFind. Required: documentId. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on applyTextStyle? +

Register the Google Drive MCP server in PolicyLayer and add a rule for applyTextStyle: 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.

What risk level is applyTextStyle? +

applyTextStyle is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit applyTextStyle? +

Yes. Add a rate_limit block to the applyTextStyle 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.

How do I block applyTextStyle completely? +

Set action: deny in the PolicyLayer policy for applyTextStyle. 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.

What MCP server provides applyTextStyle? +

applyTextStyle 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.

KEEP EXPLORING

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