updatePeopleContact · Google Workspace MCP Server MCP

WHAT IT DOES

What updatePeopleContact does on Google Workspace MCP Server

AI agents use updatePeopleContact 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 updatePeopleContact needs a policy

The tool modifies existing contact data in Google Workspace People API. This is a Write operation because it creates or modifies data reversibly—the update can be undone by updating fields again to previous values.

From the tool's definition Tool name is 'updatePeopleContact' and description states 'Update an existing contact' with fields that 'replace existing values.' This is a reversible modification operation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

updatePeopleContact Rate-limited

updatePeopleContact 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": {
    "updatePeopleContact": {
      "limits": [
        {
          "counter": "updatepeoplecontact_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 updatePeopleContact

What does the updatePeopleContact tool do? +

Update an existing contact. Fields provided will replace existing values. Omitted fields remain unchanged. 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 updatePeopleContact? +

Register the Google Workspace MCP Server MCP server in PolicyLayer and add a rule for updatePeopleContact: 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 updatePeopleContact? +

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

Can I rate-limit updatePeopleContact? +

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

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

updatePeopleContact 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.