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Nolizi Calendar

by calendar.nolizi.com · remote · no sign-in to list tools · v0.10.5 · published by com.nolizi.calendar

Free scheduling your agent can book through: live availability, booking, verification, cancel.

Deletes · 1Final · 1
CompareRegistry entry

5 tools: 1 can delete or cancel things, 1 do something that can't be undone and 3 only read.

Scanned Oct 21, 2026

1 check matched something in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http calendar https://calendar.nolizi.com/mcp --header 'Authorization: <your-authorization>'

Findings

Matches of fixed checks, with the text they matched.

1 warn
  • Warnlist_event_types

    The description contains "every other tool", wording about other tools or servers.

    Matched text

    description: ".... Start here: the returned slug is what every other tool needs. Never guess a slug. Events with..."

    What this check looks for

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

5 tools

Deletes or cancels 1Claude Code: deny
  • cancel_bookingCancel a confirmed booking.No findings

    Why it is in this group

    • The name "cancel_booking" says "cancel": a word for removing or ending something.
    • The description says "cannot be undone".
    • The server marks it destructive (destructiveHint: true).
    Description, as the server wrote it
    Cancel a confirmed booking. This notifies the attendee and removes the meeting from connected calendars, and it cannot be undone. Use an exact booking_id taken from list_upcoming_bookings — never a guessed or reconstructed one. Cancelling one occurrence of a grouped or recurring booking can affect several meetings, so confirm with the person which meetings they mean.

    Annotations the server declares

    • readOnlyHint: false
    • destructiveHint: true
    • idempotentHint: true
    • openWorldHint: true
Can't be undone 1Claude Code: ask
  • create_bookingBook a real meeting.No findings

    Why it is in this group

    • The name "create_booking" says "create": a word for a change.
    • The description says "cannot be undone".
    Description, as the server wrote it
    Book a real meeting. This sends invitations and writes to connected calendars, and it cannot be undone except by cancelling. Ask the person to confirm the event, the exact time and the attendee details before calling it, and use their real name and email — never a placeholder. The start and end must be copied verbatim from a recent list_available_slots response; this server re-checks them against live availability and refuses times it cannot find. There is no idempotency key: if this call returns an uncertain outcome, do not call it again — call list_upcoming_bookings and read what actually happened.

    Annotations the server declares

    • readOnlyHint: false
    • destructiveHint: false
    • idempotentHint: false
    • openWorldHint: true
Only reads 3Claude Code: allow
  • list_available_slotsReturn the live available start/end pairs for one event type.No findings

    Why it is in this group

    • The name "list_available_slots" says "list": a word for reading.
    Description, as the server wrote it
    Return the live available start/end pairs for one event type. These are real times on a real calendar: show them to the person and let them choose. Do not invent, extrapolate or round a time that is not in this response. Convert times for display only — pass the original values back to create_booking unchanged.

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • openWorldHint: true
  • list_event_typesList the bookable event types owned by the configured Nolizi Calendar account.1 finding

    Why it is in this group

    • The name "list_event_types" says "list": a word for reading.

    Findings

    • Warn

      The description contains "every other tool", wording about other tools or servers.

      Matched text

      description: ".... Start here: the returned slug is what every other tool needs. Never guess a slug. Events with..."

      What this check looks for
    Description, as the server wrote it
    List the bookable event types owned by the configured Nolizi Calendar account. Start here: the returned slug is what every other tool needs. Never guess a slug. Events with required custom questions or email verification cannot be booked through this API — send the person to the event’s public booking page instead.

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • openWorldHint: true
  • list_upcoming_bookingsList up to 100 upcoming confirmed bookings.No findings

    Why it is in this group

    • The name "list_upcoming_bookings" says "list": a word for reading.
    Description, as the server wrote it
    List up to 100 upcoming confirmed bookings. This is the only way to verify that a booking exists. Use it after every create or cancel, and use it first whenever a write returned an uncertain outcome.

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • openWorldHint: true

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 0.10.5. Values in angle brackets are yours to fill in.

claude mcp add --transport http calendar https://calendar.nolizi.com/mcp --header 'Authorization: <your-authorization>'

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__calendar__list_event_types",
      "mcp__calendar__list_available_slots",
      "mcp__calendar__list_upcoming_bookings"
    ],
    "ask": [
      "mcp__calendar__create_booking"
    ],
    "deny": [
      "mcp__calendar__cancel_booking"
    ]
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as calendar. Review it before you use it.