unlockFile

Unlock a previously locked file by removing content restrictions, restoring full edit access.

SERVERGoogle Drive SOURCE@ark7/google-drive-mcp

Medium RISK CLASS

Category Write

Parameters 21 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/unlockfile.md

WHAT IT DOES

What unlockFile does on Google Drive

AI agents use unlockFile 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
`fileId`	string	Yes	ID of the file to unlock
`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

Parameters from the server's own tool schema.

RISK

Why unlockFile is rated Medium

Unlocking a file modifies its access control state reversibly—the lock can be re-applied. This is a Write operation (permission/metadata modification) rather than Destructive because the action is reversible and does not delete or irreversibly destroy data.

From the tool's definition Tool name 'unlockFile' and description 'removing content restrictions, restoring full edit access' indicate modification of file access controls and permissions state.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

unlockFile Rate-limited

unlockFile 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": {
    "unlockFile": {
      "limits": [
        {
          "counter": "unlockfile_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 unlockFile call is checked against it from then on.

FAQ

Questions about unlockFile

What does the unlockFile tool do? +

Unlock a previously locked file by removing content restrictions, restoring full edit access. 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 unlockFile accept? +

unlockFile accepts 2 parameters: fileId, account. Required: fileId. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on unlockFile? +

Register the Google Drive MCP server in PolicyLayer and add a rule for unlockFile: 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 unlockFile? +

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

Can I rate-limit unlockFile? +

Yes. Add a rate_limit block to the unlockFile 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 unlockFile completely? +

Set action: deny in the PolicyLayer policy for unlockFile. 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 unlockFile? +

unlockFile 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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