add_contacts_to_group

Add contacts to a contact group (assign a label to contacts).

SERVERMCP Google Contacts Server SOURCE4tal/mcp-google-contacts

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/4tal-mcp-google-contacts/add-contacts-to-group.md

WHAT IT DOES

What add_contacts_to_group does on MCP Google Contacts Server

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

RISK

Why add_contacts_to_group is rated Medium

The tool creates or modifies the relationship between contacts and groups by assigning labels—a write operation. It is not destructive (the assignment is reversible; contacts and groups remain intact), not financial, and not execute (no arbitrary code/command execution).

From the tool's definition Tool performs 'Add contacts to a contact group' which modifies contact metadata by assigning labels. This is a reversible modification operation on existing contact records.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs add_contacts_to_group safely

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

add_contacts_to_group Rate-limited

add_contacts_to_group 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": {
    "add_contacts_to_group": {
      "limits": [
        {
          "counter": "add_contacts_to_group_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 MCP Google Contacts Server, apply this rule, and every add_contacts_to_group call is checked against it from then on.

FAQ

Questions about add_contacts_to_group

What does the add_contacts_to_group tool do? +

Add contacts to a contact group (assign a label to contacts). It is categorised as a Write tool in the MCP Google Contacts 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 add_contacts_to_group? +

Register the MCP Google Contacts Server MCP server in PolicyLayer and add a rule for add_contacts_to_group: 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 MCP Google Contacts Server. Nothing to install.

What risk level is add_contacts_to_group? +

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

Can I rate-limit add_contacts_to_group? +

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

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

add_contacts_to_group is provided by the MCP Google Contacts Server MCP server (4tal/mcp-google-contacts). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on MCP Google Contacts Server, and thousands of servers like it.

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Guides

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