# updateEvent

Updates an existing Google Calendar event with PATCH semantics — only the fields you provide are changed; everything else stays the same. Common uses: reschedule (set start+end), retitle (set summary), add/remove attendees (set attendees array which fully replaces).

Agent View of the PolicyLayer registry record for `updateEvent`. HTML page: https://policylayer.com/tools/a-bonus-google-docs-mcp/updateevent

## Facts

- Tool: `updateEvent`
- Server: Claude MCP x Google Docs (`a-bonus/google-docs-mcp`) — https://policylayer.com/tools/a-bonus-google-docs-mcp.md
- Homepage: https://github.com/a-bonus/google-docs-mcp
- 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": "updateEvent",
    "arguments": {}
  }
}
```

## Why updateEvent is rated Medium

This tool creates or modifies data reversibly (calendar event metadata). It does not delete, execute code, or trigger financial transactions. While it could be misused to spam attendees with rescheduled meetings or impersonate calendar actions, the impact is limited to calendar metadata changes that can be undone.

From the tool's own definition: "The tool description states it 'Updates an existing Google Calendar event' with 'PATCH semantics' and can modify fields like start/end times, summary, and attendees."

Risk signals: Bulk/mass operation — affects multiple targets

## Use case

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

## Recommended policy (PolicyLayer)

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

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

## Other tools on Claude MCP x Google Docs (83)

- `clearRange` — Destructive — https://policylayer.com/tools/a-bonus-google-docs-mcp/clearrange.md
- `deleteChart` — Destructive — https://policylayer.com/tools/a-bonus-google-docs-mcp/deletechart.md
- `deleteConditionalFormatting` — Destructive — https://policylayer.com/tools/a-bonus-google-docs-mcp/deleteconditionalformatting.md
- `deleteDraft` — Destructive — https://policylayer.com/tools/a-bonus-google-docs-mcp/deletedraft.md
- `deleteEvent` — Destructive — https://policylayer.com/tools/a-bonus-google-docs-mcp/deleteevent.md
- `deleteFile` — Destructive — https://policylayer.com/tools/a-bonus-google-docs-mcp/deletefile.md
- `deleteSheet` — Destructive — https://policylayer.com/tools/a-bonus-google-docs-mcp/deletesheet.md
- `deleteSheetsComment` — Destructive — https://policylayer.com/tools/a-bonus-google-docs-mcp/deletesheetscomment.md
- `deleteTable` — Destructive — https://policylayer.com/tools/a-bonus-google-docs-mcp/deletetable.md
- `trashMessage` — Destructive — https://policylayer.com/tools/a-bonus-google-docs-mcp/trashmessage.md
- `createAppsScriptProject` — Execute — https://policylayer.com/tools/a-bonus-google-docs-mcp/createappsscriptproject.md
- `sendEmail` — Execute — https://policylayer.com/tools/a-bonus-google-docs-mcp/sendemail.md
- `downloadFile` — Read — https://policylayer.com/tools/a-bonus-google-docs-mcp/downloadfile.md
- `getAppsScriptContent` — Read — https://policylayer.com/tools/a-bonus-google-docs-mcp/getappsscriptcontent.md
- `getConditionalFormatting` — Read — https://policylayer.com/tools/a-bonus-google-docs-mcp/getconditionalformatting.md
- `getDocumentInfo` — Read — https://policylayer.com/tools/a-bonus-google-docs-mcp/getdocumentinfo.md
- `getDraft` — Read — https://policylayer.com/tools/a-bonus-google-docs-mcp/getdraft.md
- `getFolderInfo` — Read — https://policylayer.com/tools/a-bonus-google-docs-mcp/getfolderinfo.md
- `getMessage` — Read — https://policylayer.com/tools/a-bonus-google-docs-mcp/getmessage.md
- `getSheetsComment` — Read — https://policylayer.com/tools/a-bonus-google-docs-mcp/getsheetscomment.md
- `getSpreadsheetInfo` — Read — https://policylayer.com/tools/a-bonus-google-docs-mcp/getspreadsheetinfo.md
- `getTable` — Read — https://policylayer.com/tools/a-bonus-google-docs-mcp/gettable.md
- `listDocuments` — Read — https://policylayer.com/tools/a-bonus-google-docs-mcp/listdocuments.md
- `listDrafts` — Read — https://policylayer.com/tools/a-bonus-google-docs-mcp/listdrafts.md
- `listDriveFiles` — Read — https://policylayer.com/tools/a-bonus-google-docs-mcp/listdrivefiles.md
- `listEvents` — Read — https://policylayer.com/tools/a-bonus-google-docs-mcp/listevents.md
- `listFolderContents` — Read — https://policylayer.com/tools/a-bonus-google-docs-mcp/listfoldercontents.md
- `listLabels` — Read — https://policylayer.com/tools/a-bonus-google-docs-mcp/listlabels.md
- `listMessages` — Read — https://policylayer.com/tools/a-bonus-google-docs-mcp/listmessages.md
- `listSheetsComments` — Read — https://policylayer.com/tools/a-bonus-google-docs-mcp/listsheetscomments.md
- …and 53 more: https://policylayer.com/tools/a-bonus-google-docs-mcp.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=a-bonus-google-docs-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/a-bonus-google-docs-mcp