Finds specific text within a Google Document and applies character formatting (bold, italics, color, etc.) to the specified instance.
AI agents use formatMatchingText to create or update resources in Google Workspace MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Google Workspace MCP Server environment.
The tool modifies document content by applying formatting to matching text, which is a write operation that changes the document state. It is reversible (formatting can be removed or changed), so it does not qualify as Destructive. The blast radius is medium because unintended formatting changes across a document could degrade readability or cause confusion, but the changes are not permanent or data-destructive.
From the tool's definition Applies character formatting (bold, italics, color, etc.) to text within a Google Document—this modifies the document's formatting properties reversibly.
Documented attack patterns abuse exactly the kind of access formatMatchingText gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Google Workspace MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for formatMatchingText:
{
"version": "1",
"default": "deny",
"tools": {
"formatMatchingText": {
"limits": [
{
"counter": "formatmatchingtext_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}formatMatchingText 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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Finds specific text within a Google Document and applies character formatting (bold, italics, color, etc.) to the specified instance. It is categorised as a Write tool in the Google Workspace MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Google Workspace MCP Server MCP server in PolicyLayer and add a rule for formatMatchingText: 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 Workspace MCP Server. Nothing to install.
formatMatchingText 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 formatMatchingText 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 formatMatchingText. 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.
formatMatchingText is provided by the Google Workspace MCP Server MCP server (sputnicyoji/google-workspace-mcp-with-script). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Google Workspace MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
72 Google Workspace MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.