# update_contact_advanced

Update an existing contact with full field support including multiple emails, phones, addresses, etc.

Agent View of the PolicyLayer registry record for `update_contact_advanced`. HTML page: https://policylayer.com/tools/4tal-mcp-google-contacts/update-contact-advanced

## Facts

- Tool: `update_contact_advanced`
- Server: MCP Google Contacts Server (`4tal/mcp-google-contacts`) — https://policylayer.com/tools/4tal-mcp-google-contacts.md
- Homepage: https://github.com/4tal/mcp-google-contacts
- Risk category: Write (Medium risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Rate-limited

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "update_contact_advanced",
    "arguments": {}
  }
}
```

## Why update_contact_advanced is rated Medium

This tool modifies existing contact records in Google Contacts by updating fields. The operation is reversible (contacts can be updated again or reverted), so it falls under Write rather than Destructive.

From the tool's own definition: "Tool name includes 'update' and description states 'Update an existing contact with full field support' — modifies contact data reversibly. The server manages 'creating, searching, and updating contacts' as core functions, confirming Write capability."

## Use case

AI agents use update_contact_advanced 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.

## Recommended policy (PolicyLayer)

Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches MCP Google Contacts Server:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "update_contact_advanced": {
      "limits": [
        {
          "counter": "update_contact_advanced_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on MCP Google Contacts Server (18)

- `delete_contact` — Destructive — https://policylayer.com/tools/4tal-mcp-google-contacts/delete-contact.md
- `delete_contact_group` — Destructive — https://policylayer.com/tools/4tal-mcp-google-contacts/delete-contact-group.md
- `get_contact` — Read — https://policylayer.com/tools/4tal-mcp-google-contacts/get-contact.md
- `get_contact_group` — Read — https://policylayer.com/tools/4tal-mcp-google-contacts/get-contact-group.md
- `get_other_contacts` — Read — https://policylayer.com/tools/4tal-mcp-google-contacts/get-other-contacts.md
- `list_contact_groups` — Read — https://policylayer.com/tools/4tal-mcp-google-contacts/list-contact-groups.md
- `list_contacts` — Read — https://policylayer.com/tools/4tal-mcp-google-contacts/list-contacts.md
- `list_workspace_users` — Read — https://policylayer.com/tools/4tal-mcp-google-contacts/list-workspace-users.md
- `search_contacts` — Read — https://policylayer.com/tools/4tal-mcp-google-contacts/search-contacts.md
- `search_contacts_by_group` — Read — https://policylayer.com/tools/4tal-mcp-google-contacts/search-contacts-by-group.md
- `search_directory` — Read — https://policylayer.com/tools/4tal-mcp-google-contacts/search-directory.md
- `add_contacts_to_group` — Write — https://policylayer.com/tools/4tal-mcp-google-contacts/add-contacts-to-group.md
- `create_contact` — Write — https://policylayer.com/tools/4tal-mcp-google-contacts/create-contact.md
- `create_contact_advanced` — Write — https://policylayer.com/tools/4tal-mcp-google-contacts/create-contact-advanced.md
- `create_contact_group` — Write — https://policylayer.com/tools/4tal-mcp-google-contacts/create-contact-group.md
- `remove_contacts_from_group` — Write — https://policylayer.com/tools/4tal-mcp-google-contacts/remove-contacts-from-group.md
- `update_contact` — Write — https://policylayer.com/tools/4tal-mcp-google-contacts/update-contact.md
- `update_contact_group` — Write — https://policylayer.com/tools/4tal-mcp-google-contacts/update-contact-group.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=4tal-mcp-google-contacts · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/4tal-mcp-google-contacts