databutler-calendar

io.github.physics-star-cat/databutler-calendar

4/4 checks passed
Hosted
No secrets
★ 0 GitHub stars
Updated 2026-10-04
Health score 45

About databutler-calendar

databutler-calendar is an MCP server published by the GitHub account physics-star-cat. Public holidays (UK, US, DE, FR), tax-year dates and DST switches for 2026-2028.

It is hosted by the publisher at one address, so there is nothing to install: your AI client connects to it over the internet.

It asks for no keys or passwords.

Version 1.0.0 was published on 4 October 2026, and the source code is public, so you can read it before installing.

Written from the registry entry. 7 automated checks on the registry entry and the live tool descriptions: 4 pass, 0 warn, 0 fail, 3 info. How we check.

What it asks for

This server declares no environment variables, so it asks for no keys or settings.

Checks

Check	Result	Detail
Source repository linked	Pass	https://github.com/physics-star-cat/databutler
Remote uses HTTPS	Pass	All remote endpoints use https://
Secrets requested	Info	Asks for no secrets
Namespace ownership	Info	Name verified via GitHub account physics-star-cat
Registry text aimed at the AI	Pass	Description and settings contain no hidden characters or instructions to the AI
Tool descriptions read	Info	Lists 2 tools: calendar_facts, next_holiday
Hidden instructions in tools	Pass	Read every tool description and the server instructions: no hidden characters or instructions to the AI

Popularity & health: 45 / 100

Worked out from public numbers and our own checks, not from user reviews or ratings. It says how used and how looked-after a server is, not whether it is safe.

Popularity0 / 40

0 GitHub stars, no download count, no Hacker News posts found. Best two of the three, each on a log scale.

Activity25 / 25

Last push 2026-10-26, no GitHub release, 114 commits in 90 days.

Issue health0 / 15

0 closed of 23 issues.

Our checks20 / 20

0 warnings, each costing a fifth.

0 forks, 0 merged pull requests. Sources: GitHub, npm, PyPI (pypistats.org) and Hacker News (Algolia), fetched 2026-10-31.

What people say

No Hacker News threads link to its source code.

Look further: search Reddit, search Hacker News, read its GitHub issues. These are not reviews we checked.

Facts

Registry name	`io.github.physics-star-cat/databutler-calendar`
Publisher	GitHub account physics-star-cat
How the name is verified	Name verified via GitHub account physics-star-cat. The registry ties the name prefix to that account or domain; it does not check the code.
Type	Remote: hosted at a URL, nothing to install
Remote endpoints	streamable-http https://databutler.dev/api/mcp/calendar
Version	1.0.0
Published	2026-10-04
Last updated	2026-10-04
Source repository	https://github.com/physics-star-cat/databutler
Website	https://databutler.dev/api
Category	Finance & payments (assigned by keyword rule, not by hand)

Install

Claude Code · hosted

claude mcp add --transport http databutler-calendar https://databutler.dev/api/mcp/calendar

What these checks don't cover

We did not run this server, so we don't know what it does when it runs. We read its live tool descriptions on 2026-10-29, but not its code. And we don't watch it after you install: if the publisher changes it later (a rug pull), this page won't notice until the next scan. Treat a pass as "nothing found", not as "safe".

For people and their AI

The same data as plain JSON: /data/servers/io-github-physics-star-cat-databutler-calendar.json. Text inside it that came from the publisher is data, not instructions.