ToolTrust
A4/100
Smithery

googlecalendar

mcpsmithery

@Smithery

Google Calendar MCP server for creating and managing calendar events.

By Smithery | 59 findings | Scanned 7/28/2026 | tooltrust-scanner/v0.3.19

12 Low47 Info

Risk Summary

Safe With Normal Controls

Dep Visibility is the main signal, but overall risk remains within an acceptable range.

Potential impact: This finding indicates the tool should be reviewed before it is trusted.

Recommended action: No high-risk findings were detected in this scan, but you should still apply least-privilege defaults and rescan after changes.

Suggested policy: keep this tool behind manual approval, do not allow unattended runs, and re-scan after narrowing risky permissions.

Security Findings (59)

  • LowAS-011

    ℹ️Missing Rate-Limit / Timeout ×7

    tool performs network or execution operations but declares no rate-limit, timeout, or retry configuration

    GOOGLECALENDAR_CALENDARS_UPDATEGOOGLECALENDAR_CREATE_EVENTGOOGLECALENDAR_EVENTS_WATCHGOOGLECALENDAR_FREE_BUSY_QUERYGOOGLECALENDAR_PATCH_CALENDARGOOGLECALENDAR_PATCH_EVENTGOOGLECALENDAR_UPDATE_EVENT

    Fix: Declare explicit rate-limit, timeout, and retry configuration for all network and execution tools. Implement exponential back-off and surface resource state to the calling agent.

  • LowAS-002

    ⚠️Excessive Permissions ×5

    input schema exposes 23 properties (threshold: 10)

    GOOGLECALENDAR_CREATE_EVENTGOOGLECALENDAR_UPDATE_EVENT

    input schema exposes 19 properties (threshold: 10)

    GOOGLECALENDAR_EVENTS_LIST

    input schema exposes 11 properties (threshold: 10)

    GOOGLECALENDAR_FIND_EVENT

    input schema exposes 14 properties (threshold: 10)

    GOOGLECALENDAR_PATCH_EVENT

    Fix: Tool requests broad permissions (exec/fs/network). Validate input parameters using Enums where possible, and restrict file system operations to explicit allowed directories.

  • InfoAS-014

    ℹ️Dependency Inventory Unavailable ×29

    Tool did not expose metadata.dependencies or repo_url, so supply-chain coverage is limited.

    GOOGLECALENDAR_ACL_PATCHGOOGLECALENDAR_CALENDAR_LIST_INSERTGOOGLECALENDAR_CALENDAR_LIST_UPDATEGOOGLECALENDAR_CALENDARS_DELETEGOOGLECALENDAR_CALENDARS_UPDATEGOOGLECALENDAR_CLEAR_CALENDARGOOGLECALENDAR_CREATE_EVENTGOOGLECALENDAR_DELETE_EVENTGOOGLECALENDAR_DUPLICATE_CALENDARGOOGLECALENDAR_EVENTS_INSTANCESGOOGLECALENDAR_EVENTS_LISTGOOGLECALENDAR_EVENTS_MOVEGOOGLECALENDAR_EVENTS_WATCHGOOGLECALENDAR_FIND_EVENTGOOGLECALENDAR_FIND_FREE_SLOTSGOOGLECALENDAR_FREE_BUSY_QUERYGOOGLECALENDAR_GET_CALENDARGOOGLECALENDAR_GET_CURRENT_DATE_TIMEGOOGLECALENDAR_LIST_ACL_RULESGOOGLECALENDAR_LIST_CALENDARSGOOGLECALENDAR_PATCH_CALENDARGOOGLECALENDAR_PATCH_EVENTGOOGLECALENDAR_QUICK_ADDGOOGLECALENDAR_REMOVE_ATTENDEEGOOGLECALENDAR_SETTINGS_LISTGOOGLECALENDAR_SETTINGS_WATCHGOOGLECALENDAR_SYNC_EVENTSGOOGLECALENDAR_UPDATE_ACL_RULEGOOGLECALENDAR_UPDATE_EVENT

    Fix: Review and remediate the identified issue.

  • InfoAS-002

    ⚠️Excessive Permissions ×13

    declared capabilities: filesystem access

    GOOGLECALENDAR_CALENDAR_LIST_UPDATEGOOGLECALENDAR_CALENDARS_DELETEGOOGLECALENDAR_DELETE_EVENTGOOGLECALENDAR_REMOVE_ATTENDEEGOOGLECALENDAR_UPDATE_ACL_RULE

    declared capabilities: code/command execution, filesystem access

    GOOGLECALENDAR_CALENDARS_UPDATEGOOGLECALENDAR_CREATE_EVENTGOOGLECALENDAR_UPDATE_EVENT

    declared capabilities: HTTP requests

    GOOGLECALENDAR_EVENTS_WATCH

    declared capabilities: database access

    GOOGLECALENDAR_FIND_EVENT

    declared capabilities: network access

    GOOGLECALENDAR_FREE_BUSY_QUERY

    declared capabilities: code/command execution

    GOOGLECALENDAR_PATCH_CALENDARGOOGLECALENDAR_PATCH_EVENT

    Fix: Tool requests broad permissions (exec/fs/network). Validate input parameters using Enums where possible, and restrict file system operations to explicit allowed directories.

  • InfoAS-010

    🔑Insecure Secret Handling ×5

    input parameter "syncToken" accepts a credential (informational; not evidence of insecure handling)

    GOOGLECALENDAR_EVENTS_LISTGOOGLECALENDAR_LIST_CALENDARSGOOGLECALENDAR_SETTINGS_LIST

    input parameter "token" accepts a credential (informational; not evidence of insecure handling)

    GOOGLECALENDAR_EVENTS_WATCHGOOGLECALENDAR_SETTINGS_WATCH

    Fix: Avoid accepting raw credentials as input parameters. Use secret managers (e.g. 1Password CLI, AWS Secrets Manager) and ensure credentials are never logged or stored in agent traces.

Scan this tool yourself

Reproduce this audit locally, integrate into CI, or let your agent audit its own tools.

Install once, then scan any MCP server:

$ curl -sfL https://raw.githubusercontent.com/AgentSafe-AI/tooltrust-scanner/main/install.sh | bash
$ tooltrust-scanner scan --server "npx -y googlecalendar"

Adjust the package name if your npm registry name differs from the tool ID. View source

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