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8 clients · secrets stay placeholders

JSON (mcpServers)Claude CodeCodexOpenCodeCursorVS CodeGemini CLIGoose

{
  "mcpServers": {
    "databutler-calendar": {
      "type": "http",
      "url": "https://databutler.dev/api/mcp/calendar"
    }
  }
}

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

[mcp_servers.databutler-calendar]
url = "https://databutler.dev/api/mcp/calendar"

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "databutler-calendar": {
      "type": "remote",
      "url": "https://databutler.dev/api/mcp/calendar",
      "enabled": true
    }
  }
}

{
  "mcpServers": {
    "databutler-calendar": {
      "type": "http",
      "url": "https://databutler.dev/api/mcp/calendar"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=databutler-calendar&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vZGF0YWJ1dGxlci5kZXYvYXBpL21jcC9jYWxlbmRhciJ9"
}

{
  "servers": {
    "databutler-calendar": {
      "type": "http",
      "url": "https://databutler.dev/api/mcp/calendar"
    }
  }
}

{
  "mcpServers": {
    "databutler-calendar": {
      "httpUrl": "https://databutler.dev/api/mcp/calendar"
    }
  }
}

extensions:
  "databutler-calendar":
    enabled: true
    name: "databutler-calendar"
    type: streamable_http
    uri: "https://databutler.dev/api/mcp/calendar"
    timeout: 300

Quality 88 / 100good

protocol75 · weight 25

warn
protocol.modernnewest supported version is 2025-11-25; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
n/a
protocol.statelessonly applies to 2026-07-28 servers
pass
protocol.transportstreamable HTTP
n/a
protocol.list_ttlonly applies to 2026-07-28 servers

authorizationn/a · weight 15

n/a
auth.prm, auth.as_metadata, auth.cimdno remote uses OAuth
n/a
auth.secret_in_urlno templated URL

tool hygiene93 · weight 30

pass
tools.descriptionsevery tool has a description
warn
tools.description_length1 tools have descriptions over 1,024 characters, which crowds the context
pass
tools.schemasevery tool has an object input schema
pass
tools.annotations2 of 2 tools declare readOnlyHint or destructiveHint
pass
tools.directory_hintsevery tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint
pass
tools.token_costabout 793 tokens to load every tool
pass
tools.api_dumptools are not a one-to-one API dump

stability100 · weight 15

pass
stability.changesno tool changes in 30 days
pass
stability.rug_pullno tool changed its meaning under the same name

dependenciesn/a · weight 15

n/a
deps.known_vulns, deps.mcp_sdk_version, deps.resolvableno npm or PyPI package

2 tools, about 793 tokens to load them all · tool set 1c66a0f3832f · checked 2026-10-20 13:49 UTC

Tool changes

No tool definition changes recorded. A server's first observation is its baseline; later probes record what changes.

Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.

Trust 93 / 100

duplicate-repo

provenance90

liveness100

freshness100

hygiene80

+repository +namespace-matches-repo +website +reachable +uptime-100% +updated-16d-ago -duplicate-repo(16 names)

Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.

Endpoints

remote	auth	reachable	uptime 30d	p50	protocol	last ok
`https://databutler.dev/api/mcp/calendar` streamable-http	none	yes	100%	194 ms	2025-11-25	2026-10-20

Tools (2)

calendar_factsread-only Public holidays, tax-year dates or daylight-saving switches for one country in 2026–2028, from the official lists and statutes. kind=holidays (uk, us, de, fr): every public holiday of the year with its date and weekday, by region — UK nations (england-and-wales, scotland, northern-ireland; substitute days flagged), US federal (statutory date plus OPM's observed date when it falls on a weekend), German Länder by code or name (nationwide = the nine bundeseinheitlichen Feiertage; partial holidays carry their scope), French metropole or alsace-moselle. kind=tax-year (uk, us, au, in, ca, de, fr, br, pl): the personal tax year's start and end with the periods for 2026–2028 and the statute or official page quoted, plus the government fiscal year where it differs. kind=dst (uk, de, fr, us, au, br): the statutory rule and the computed clocks-forward and clocks-back dates per year, with the states that observe it for Australia and observed:false for Brazil. Country names, UK nations, German Land names (Bavaria, Sachsen) and kind synonyms (bank holidays, financial year, clocks) resolve; no country lists everything covered; unknown countries, regions and years answer covered:false with the nearest matches. Entries that could not be re-verified against an official page carry nonOfficial: true.

next_holidayread-only The next public holiday strictly after a date (default: today) for uk, us, de, fr, with its name, date, weekday and days until it, the three that follow, and any holiday falling on the date itself; by region as for calendar_facts (UK nations, US federal with OPM's observed date deciding the order, German Länder, French zones). The data runs to the end of 2028; a later date answers covered:false with the last date covered. From the same monthly snapshot of the official lists, with the list's URL as source.

Schemas: list_tools.

Also listed as

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Official server.json

{
  "name": "io.github.physics-star-cat/databutler-calendar",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://databutler.dev/api/mcp/calendar",
      "type": "streamable-http"
    }
  ],
  "version": "1.0.0",
  "repository": {
    "url": "https://github.com/physics-star-cat/databutler",
    "source": "github"
  },
  "websiteUrl": "https://databutler.dev/api",
  "description": "Public holidays (UK, US, DE, FR), tax-year dates and DST switches for 2026-2028."
}