modify_gmail_email

Modify email labels

SERVERVaultAssist SOURCE3xcaffeine/mcp-server

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/3xcaffeine-mcp-server/modify-gmail-email.md

WHAT IT DOES

What modify_gmail_email does on VaultAssist

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

RISK

Why modify_gmail_email is rated Medium

This tool performs a reversible modification operation on Gmail emails (specifically their labels). It does not delete data (which would be Destructive), execute arbitrary code (Execute), or move money (Financial).

From the tool's definition Tool name is 'modify_gmail_email' and description states 'Modify email labels'. Modifying labels is a reversible change to email metadata that does not delete or destroy data.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs modify_gmail_email safely

PolicyLayer is an MCP gateway: it sits between your AI agents and VaultAssist, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For modify_gmail_email, this is the rule to start with:

modify_gmail_email Rate-limited

modify_gmail_email 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": {
    "modify_gmail_email": {
      "limits": [
        {
          "counter": "modify_gmail_email_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 VaultAssist, apply this rule, and every modify_gmail_email call is checked against it from then on.

FAQ

Questions about modify_gmail_email

What does the modify_gmail_email tool do? +

Modify email labels. It is categorised as a Write tool in the VaultAssist MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on modify_gmail_email? +

Register the VaultAssist MCP server in PolicyLayer and add a rule for modify_gmail_email: 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 VaultAssist. Nothing to install.

What risk level is modify_gmail_email? +

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

Can I rate-limit modify_gmail_email? +

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

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

modify_gmail_email is provided by the VaultAssist MCP server (3xcaffeine/mcp-server). 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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