MCP.Market

Calendar MCP server

by theluckystrike·io.github.theluckystrike/calendar·v0.22.5·2 stars
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Time zone and calendar helper: meeting slots across countries, DST checks, .ics invites.

B73/100grade B
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Safety scan
B73/100

full report

Adoption
Growing

2 stars

Reviews

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If you have run it, two minutes of your experience saves the next person an afternoon.

Calendar tools

No tool declarations could be read from the package source. They show once the server is installed.

Public scan report

scanner v0.1.10 · 2026-10-15 · same rubric, same numbers if you re-run it

no findings
  • –Code scanpackage could not be scannedn/a
  • –Live reliabilityno gateway calls yet and no remote to proben/a
  • –Tool poisoningtools not inspected (local package is not executed); not countedn/a
  • Auth qualitystatic API keys via environment variables6/15
  • Maintenancelast push 0 days ago15/15
  • Maintainer identityregistry namespace matches repository owner; GitHub account older than a year8/10
Overall 73/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How Calendar compares

Against every graded Productivity MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
73/100
higher than 35% of 1,299 Productivity servers
GitHub stars
2
more than 60% of 854 Productivity servers

Release history: 2 versions in the registry since 2026-09-07, latest 2026-10-14, typically one every 37 days.

Install Calendar in Claude Code, Cursor or VS Code

The registry entry has no remote endpoint or installable package.

What the publisher says

From the Calendar repository's README, as published. We do not edit it. Read it on GitHub

MCP servers by theluckystrike

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Practical Model Context Protocol servers for people who work inside Claude, Cursor and other MCP clients. Every server runs locally over stdio, keeps all data on your machine, and has a genuinely useful free tier. Pro unlocks the limits for a one-time payment: $19 per server or $39 for the bundle, lifetime.

<!-- gen:counts --> 46 servers plus the office-suite aggregator, 45 of them also reachable as a hosted endpoint with no install. <!-- /gen:counts -->

No install? Use any server instantly as a hosted endpoint: https://mcp.zovo.one/mcp/ — or browse the catalog at mcp.zovo.one.

<!-- gen:install -->

That is the invoice server answering a real prompt: a client, some hours, a VAT rate, and a numbered PDF at the end. Every server in the table below has a demo like it.

Two ways to run any of these, both working today.

  1. One click. Download the server's .mcpb bundle from the latest release and open it in Claude Desktop. No terminal, no config file.
  2. No install at all. Point a client at https://mcp.zovo.one/mcp/. GET https://mcp.zovo.one/mcp/connect mints a free token and prints a ready URL for each server.

A third way is coming and does not work yet: the npm packages are unpublished, so npx -y @theluckystrike/mcp- returns 404 today. The commands below are written for the day it is published; use one of the two paths above until then. <!-- /gen:install -->

Shortened. The full README is on GitHub.

Nothing above is checked by us. What we check is on the safety report.

Calendar: common questions

Is Calendar MCP server safe?
Mostly: it is graded B (73/100). Read the Calendar safety report
Does Calendar need an API key?
Yes. The registry entry asks for MCP_LICENSE_KEY.
Is Calendar maintained?
The last commit was 20 days ago (2026-10-15). The latest release is v0.22.5.
What can I use instead of Calendar?
Servers from other publishers that do the same job: SvGrid MCP server, Agent-Native Calendar MCP server and CLEO MCP Server.
How does Calendar compare with other Productivity MCP servers?
safety score 73/100 (higher than 35% of 1,299 Productivity servers); github stars 2 (more than 60% of 854 Productivity servers). Full comparison.

Alternatives to Calendar

Same job from other publishers: the closest match first, then the best rated.

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    Agent-Native Google Calendar - manage events, sync, and public booking
    More from BuilderIO →
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  • CLEO MCP Server
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    B
  • RevoGrid DataGrid MCP Pro
    Hosted Pro MCP server for RevoGrid DataGrid docs, examples, feature checks, and migration guidance.
    A
  • AIquila — Nextcloud MCP Server
    Nextcloud MCP server — 345 tools: files, calendar, contacts, mail, Talk, Deck, photos, maps, notes
    C