Koskamo

theluckystrike McpStamp Calendar MCP

Reads .ics calendar files and feeds to find free/busy slots, detect double bookings, export events, and convert meetings into billable time entries. It operates in read-only mode for the source calendar, never writing back, and supports both local file imports and hosted URL access via a token.

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Endpoint and access

No sign-in to connect and list tools. Individual tools may still need a vendor account, credentials, or permissions; check the documented prerequisites.

theluckystrike McpStamp Calendar MCP logo, by theluckystrikeCommunity listingStreamable HTTPNo sign-inEndpoint checked 2026-11-07Published by theluckystrike
You need:Free tokens allow 600 calls an houra Pro key 6000a token lasts 30 days from last use
MCP endpoint (Streamable HTTP)
https://mcp.zovo.one/mcp/calendar
Vendor documentation

What its tools do

12 tools, grouped by the hints the server advertises. Hints are self-declared, not verified behavior.

Read-only (5)

Can change data (7)

12 of 12 have a description · 12 of 12 declare behavior hints · 10 of 10 with parameters document them all

Checks and signals

Each line is separate evidence, not a trust score.

  • Passed Endpoint answered the live check ·
  • Availability 1 of 1 checks passed in 30 days

What you can do with it

  • Find free time slots across multiple calendars
  • Detect double-booked events in a date range
  • Export selected events to a new .ics file
  • Convert a meeting into a billable time entry

Source and maintenance

Community listingRegistry 0.23.0
mcp-registry: io.github.theluckystrike/calendar-ics-reader-events-freebusy-conflicts@0.23.0Source repositoryProject website
Maintenance checked

Protocol and capabilities

Server
mcp-calendar 0.22.6
MCP protocol negotiated in check
2025-11-25
Tools
12 advertised
Resources
2 advertised
Resource templates
0 advertised
Prompts
2 advertised
Server-advertised capabilities
{
  "tools": {
    "listChanged": true
  },
  "prompts": {
    "listChanged": true
  },
  "resources": {
    "listChanged": true
  }
}

Server-provided instructions

Untrusted server output shown for inspection. It is not Koskamo guidance and is excluded from knowledge search.

Calendar analysis over imported .ics exports from Google, Apple or Outlook. It covers events in a date window with recurring events expanded, event search, busy blocks and free windows inside working hours, double bookings, the next upcoming event, chosen events written to a new .ics file, and past meetings turned into billable time entries. Imported calendars are copies stored per user account on McpStamp's hosted service; the user's own calendar is never changed. The free tier holds 2 calendars and a 31-day window; Pro adds public feed URLs. One lifetime key unlocks this server and all 58 others: https://mcp.zovo.one/buy/bundle?src=instr.calendar

Tools

12 advertised

license_status — License status
Advertised by the server during the last successful anonymous check.
Advertised read-only

Report this endpoint's licence state for your token as JSON: the product, the tier free or pro, why it is not Pro, and the checkout URL. Call it to explain a free-tier refusal. No arguments, nothing changes.

license_status input schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {}
}
license_status annotations
{
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}
license_activate — Activate license
Advertised by the server during the last successful anonymous check.

Turn Pro on for this connection with key, an MCPL1.<payload>.<signature> issued at checkout for this server or the bundle. Data under your token stays; a wrong or expired key changes nothing. license_status confirms it.

license_activate input schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "key"
  ],
  "properties": {
    "key": {
      "type": "string",
      "description": "License key from checkout, MCPL1.<payload>.<signature>"
    }
  },
  "additionalProperties": false
}
license_activate annotations
{
  "readOnlyHint": false,
  "openWorldHint": false,
  "idempotentHint": false,
  "destructiveHint": false
}
ics_import — Import a calendar (.ics)
Advertised by the server during the last successful anonymous check.

Call this tool to read a calendar export and keep it under a name. Give path (.ics file), text (contents), or url (public .ics/webcal feed; Pro). Google, Apple, Outlook exports read. Re-importing a name replaces it.

ics_import input schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "name"
  ],
  "properties": {
    "url": {
      "type": "string",
      "maxLength": 4096,
      "description": "Public https:// or webcal:// .ics feed. Fetched once, only because you asked; Pro feature"
    },
    "name": {
      "type": "string",
      "maxLength": 80,
      "description": "What to call this calendar, e.g. \"work\" or \"family\""
    },
    "path": {
      "type": "string",
      "maxLength": 4096,
      "description": "Not available on this hosted endpoint, which has no filesystem: paste the file as text instead"
    },
    "text": {
      "type": "string",
      "maxLength": 5242880,
      "description": "The .ics file contents, pasted"
    }
  },
  "additionalProperties": false
}
ics_import annotations
{
  "readOnlyHint": false,
  "openWorldHint": false,
  "idempotentHint": false,
  "destructiveHint": false
}
calendars_list — List imported calendars
Advertised by the server during the last successful anonymous check.
Advertised read-only

List imported calendars: name, event-definition count, size, source, import time and free-tier use of the 2 slots. It also names stored .ics files with no calendar row. With none it prints the export steps.

calendars_list input schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {}
}
calendars_list annotations
{
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}
events_list — List events in a window
Advertised by the server during the last successful anonymous check.
Advertised read-only

Every event between two dates, recurring expanded to occurrences, sorted by start. Times shown in your zone (profile's, else this machine's) unless zone passed. Each id works for event_export or event_to_time_entry.

events_list input schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "from",
    "to"
  ],
  "properties": {
    "to": {
      "type": "string",
      "maxLength": 20,
      "description": "Last day, YYYY-MM-DD, included"
    },
    "from": {
      "type": "string",
      "maxLength": 20,
      "description": "First day, YYYY-MM-DD"
    },
    "zone": {
      "type": "string",
      "maxLength": 100,
      "description": "Show local times in this zone or city instead of your own"
    },
    "calendar": {
      "type": "string",
      "maxLength": 80,
      "description": "One calendar name; default every imported calendar"
    }
  },
  "additionalProperties": false
}
events_list annotations
{
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}
events_search — Search events
Advertised by the server during the last successful anonymous check.
Advertised read-only

Find events whose title, description, location or attendees contain a phrase. Searches every imported calendar. Without from/to it looks a year back and a year forward on Pro, and the free window either side of today.

events_search input schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "query"
  ],
  "properties": {
    "to": {
      "type": "string",
      "maxLength": 20,
      "description": "Last day, YYYY-MM-DD, included"
    },
    "from": {
      "type": "string",
      "maxLength": 20,
      "description": "First day, YYYY-MM-DD"
    },
    "query": {
      "type": "string",
      "maxLength": 200,
      "description": "Words to look for, case-insensitive"
    }
  },
  "additionalProperties": false
}
events_search annotations
{
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}
free_busy — Busy blocks and free windows
Advertised by the server during the last successful anonymous check.

Merged busy blocks and the free gaps inside your working hours over a day range. Events marked free do not count; whole-day events block the day. Free: 31 days. Use conflicts for overlapping pairs.

free_busy input schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "from",
    "to"
  ],
  "properties": {
    "to": {
      "type": "string",
      "maxLength": 20,
      "description": "Last day, YYYY-MM-DD, included"
    },
    "from": {
      "type": "string",
      "maxLength": 20,
      "description": "First day, YYYY-MM-DD"
    },
    "zone": {
      "type": "string",
      "maxLength": 100,
      "description": "Zone the working hours and the output are in; default your own"
    },
    "work_end": {
      "type": "string",
      "maxLength": 10,
      "description": "End of your working day, HH:MM, default 17:00"
    },
    "calendars": {
      "type": "array",
      "items": {
        "type": "string",
        "maxLength": 80
      },
      "maxItems": 20,
      "description": "Calendar names; default all of them"
    },
    "work_start": {
      "type": "string",
      "maxLength": 10,
      "description": "Start of your working day, HH:MM, default 09:00"
    }
  },
  "additionalProperties": false
}
free_busy annotations
{
  "readOnlyHint": false,
  "openWorldHint": false,
  "idempotentHint": false,
  "destructiveHint": false
}
conflicts — Find double bookings
Advertised by the server during the last successful anonymous check.

Find double bookings: every PAIR of timed events that overlap, with the minutes they collide, across all calendars unless you name one. Whole-day events are reported apart. Free: 31 days. free_busy shows gaps.

conflicts input schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "from",
    "to"
  ],
  "properties": {
    "to": {
      "type": "string",
      "maxLength": 20,
      "description": "Last day, YYYY-MM-DD, included"
    },
    "from": {
      "type": "string",
      "maxLength": 20,
      "description": "First day, YYYY-MM-DD"
    },
    "calendar": {
      "type": "string",
      "maxLength": 80,
      "description": "One calendar name; default every imported calendar"
    }
  },
  "additionalProperties": false
}
conflicts annotations
{
  "readOnlyHint": false,
  "openWorldHint": false,
  "idempotentHint": false,
  "destructiveHint": false
}
next_event — Next event
Advertised by the server during the last successful anonymous check.

The first event not yet started, within the next 366 days, across every imported calendar or one you name. Returns title, times in your zone, how long until it starts, location, attendees and its id.

next_event input schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "calendar": {
      "type": "string",
      "maxLength": 80,
      "description": "One calendar name; default every imported calendar"
    }
  },
  "additionalProperties": false
}
next_event annotations
{
  "readOnlyHint": false,
  "openWorldHint": false,
  "idempotentHint": false,
  "destructiveHint": false
}
event_export — Export events to a .ics file
Advertised by the server during the last successful anonymous check.
Advertised read-only

Call this tool to write chosen events to a new .ics file you can send or import elsewhere. Pass either ids (from events_list) or a from/to window. Times are written in UTC so the file lands correctly in any client.

event_export input schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "out_path"
  ],
  "properties": {
    "to": {
      "type": "string",
      "maxLength": 20,
      "description": "Last day, YYYY-MM-DD, included"
    },
    "ids": {
      "type": "array",
      "items": {
        "type": "string",
        "maxLength": 200
      },
      "maxItems": 500,
      "description": "Event ids from events_list, events_search or next_event"
    },
    "from": {
      "type": "string",
      "maxLength": 20,
      "description": "First day, YYYY-MM-DD (alternative to ids)"
    },
    "calendar": {
      "type": "string",
      "maxLength": 80,
      "description": "With from/to: limit to one calendar"
    },
    "out_path": {
      "type": "string",
      "maxLength": 4096,
      "description": "Name for the downloaded .ics file, e.g. week.ics"
    }
  },
  "additionalProperties": false
}
event_export annotations
{
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}
event_to_time_entry — Turn a meeting into a time entry
Advertised by the server during the last successful anonymous check.

Take one event and return the exact arguments for the time-tracker's entry_add, so a meeting that already happened becomes billable time without retyping it. Writes nothing: pass the JSON straight to entry_add.

event_to_time_entry input schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "event_id",
    "project"
  ],
  "properties": {
    "rate": {
      "anyOf": [
        {
          "type": "number",
          "minimum": 0
        },
        {
          "type": "string",
          "maxLength": 60
        }
      ],
      "description": "Hourly rate for this entry; a number (120) or the words the user said ('120 euros an hour')"
    },
    "project": {
      "type": "string",
      "maxLength": 80,
      "description": "Project or client the meeting is billed to"
    },
    "currency": {
      "type": "string",
      "maxLength": 20,
      "description": "Currency of the rate: EUR, USD, GBP, PLN, or the word the user said ('euros'). Without it the time-tracker falls back to USD."
    },
    "event_id": {
      "type": "string",
      "maxLength": 200,
      "description": "Event id from events_list, events_search or next_event"
    }
  },
  "additionalProperties": false
}
event_to_time_entry annotations
{
  "readOnlyHint": false,
  "openWorldHint": false,
  "idempotentHint": false,
  "destructiveHint": false
}
ics_forget — Forget a calendar
Advertised by the server during the last successful anonymous check.

Remove one imported calendar by name and delete this server's local copy of its .ics, freeing a slot. Your own calendar and the source file are untouched. ics_import replaces a name in place.

ics_forget input schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "name"
  ],
  "properties": {
    "name": {
      "type": "string",
      "maxLength": 80,
      "description": "The calendar name from calendars_list"
    }
  },
  "additionalProperties": false
}
ics_forget annotations
{
  "readOnlyHint": false,
  "openWorldHint": false,
  "idempotentHint": false,
  "destructiveHint": false
}

Prompts

2 advertised

upgrade_to_pro — Explain the upgrade

Advertised by the server during the last successful anonymous check.

Explain what Pro on the calendar server costs and exactly what the user has to do, without leaving the conversation.

feature
The capped feature that prompted this, if there was one
plan_my_day — Plan my day

Advertised by the server during the last successful anonymous check.

Read today's calendar, find the free stretches, and turn the meetings that already happened into billable time.

date
YYYY-MM-DD, default today
project
Project to bill today's meetings to

Resources

2 advertised

pricing — Pricing and upgrade

Advertised by the server during the last successful anonymous check.

What calendar costs, what Pro unlocks, the checkout link that carries this connection's token, and the one step a person has to take. Machine-readable; read it before telling a user how to lift a free-tier cap.

pricing URI
pricing://calendar

MIME type: application/json

today — Today's schedule

Advertised by the server during the last successful anonymous check.

Every event today across all imported calendars, in your own time zone.

today URI
calendar://today

MIME type: text/plain

90-day uptime

A lightweight connection check about every six hours, sampled on hosts with many listings. It shows the server answered, not that its tools work.

Too few checks for a percentage yet (1 of 1 answered).

  1. 2026-11-07: 1 of 1 checks answered

30-day availability

Aggregated from read-only remote checks; this is not a tool-execution or security guarantee.

Successful checks
1 of 1 (100%)
Average latency
412 ms
95th percentile latency
412 ms

Maintenance history

Public check and source-refresh events. Editorial and ownership records remain private.

  • · probe · passed · 412 ms · metadata changed · 12 tool(s), 2 resource(s), 0 resource template(s), 2 prompt(s)

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers the remote server. Use --scope project to write .mcp.json for the repo.
Claude Code configuration
claude mcp add --transport http mcpstamp-calendar-mcp https://mcp.zovo.one/mcp/calendar

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).
Codex configuration
codex mcp add mcpstamp-calendar-mcp --url https://mcp.zovo.one/mcp/calendar

Cursor

Merge this server into .cursor/mcp.json in your project, then enable mcpstamp-calendar-mcp in your MCP settings.
Cursor configuration
{
  "mcpServers": {
    "mcpstamp-calendar-mcp": {
      "url": "https://mcp.zovo.one/mcp/calendar"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure).
Cline configuration
{
  "mcpServers": {
    "mcpstamp-calendar-mcp": {
      "type": "streamableHttp",
      "url": "https://mcp.zovo.one/mcp/calendar",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start mcpstamp-calendar-mcp and inspect its tools.
VS Code configuration
{
  "servers": {
    "mcpstamp-calendar-mcp": {
      "type": "http",
      "url": "https://mcp.zovo.one/mcp/calendar"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.
Gemini CLI configuration
gemini mcp add --transport http mcpstamp-calendar-mcp https://mcp.zovo.one/mcp/calendar

Claude Desktop

Open Claude Settings > Connectors > Add custom connector, enter this server URL and enable it for the conversation. This is a manual remote-connector handoff, not a desktop JSON configuration.
Claude Desktop configuration
https://mcp.zovo.one/mcp/calendar

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.
Windsurf configuration
{
  "mcpServers": {
    "mcpstamp-calendar-mcp": {
      "serverUrl": "https://mcp.zovo.one/mcp/calendar"
    }
  }
}

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