modifyPeopleContactGroupMembers

WHAT IT DOES

What modifyPeopleContactGroupMembers does on Google Workspace MCP Server

AI agents use modifyPeopleContactGroupMembers 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.

WHY IT NEEDS A POLICY

Why modifyPeopleContactGroupMembers needs a policy

This tool modifies data (contact group members) reversibly. While 'remove' could suggest destructiveness, the context indicates removing contacts from a group (not deleting them) and adding them back is possible. This is a Write operation.

From the tool's definition Tool description states 'Add or remove contacts from a contact group' — these are reversible modifications to contact group membership. The description explicitly includes both add and remove operations on a collection of contacts.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

modifyPeopleContactGroupMembers Rate-limited

modifyPeopleContactGroupMembers 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": {
    "modifyPeopleContactGroupMembers": {
      "limits": [
        {
          "counter": "modifypeoplecontactgroupmembers_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Google Workspace MCP Server, so you can run agents against it safely.

FAQ

Questions about modifyPeopleContactGroupMembers

What does the modifyPeopleContactGroupMembers tool do? +

Add or remove contacts from a contact group. 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.

How do I enforce a policy on modifyPeopleContactGroupMembers? +

Register the Google Workspace MCP Server MCP server in PolicyLayer and add a rule for modifyPeopleContactGroupMembers: 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.

What risk level is modifyPeopleContactGroupMembers? +

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

Can I rate-limit modifyPeopleContactGroupMembers? +

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

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

modifyPeopleContactGroupMembers is provided by the Google Workspace MCP Server MCP server (pm990320/google-workspace-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.