slonce.info.pl MCP Server

by info-slonce Your server? Claim it

answering

slonce.info.pl is answering right now. Last checked 12 min ago. It exposes 7 tools.

Sunrise, sunset, day length, golden hour, moon times and phases for Poland and anywhere.

Uptime history 69 hours of history

69 hours agonow

100.0%

Uptime 24h

91 of 91 checks

Tools

read from the server

262 ms

Response time

average over 24h

open, no key

Access

streamable-http

Nothing serious here today

Today is the operative word: we check slonce.info.pl every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 12 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add slonce --transport http https://slonce.info.pl/mcp

Settings → Connectors → Add custom connector, then paste this address

https://slonce.info.pl/mcp

~/.codex/config.toml

[mcp_servers.slonce]
url = "https://slonce.info.pl/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "slonce": {
      "url": "https://slonce.info.pl/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "slonce": {
      "type": "http",
      "url": "https://slonce.info.pl/mcp"
    }
  }
}

Available tools 7

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

moon

moon_phases

The new moons, first quarters, full moons and last quarters between two dates (two years at most; from today for 60 days by default), to the minute in a time zone (Polish time by default).

moon_times

Moonrise and moonset at a place on a day (today by default), the moon's phase and lit part, a new or full moon or quarter that day, and the next new and full moon.

sun

sun_calendar

Sunrise, sunset and day length for every day of a month at a place, with the change of the day length from day to day; the link opens the same calendar to print on one A4 page.

sun_times

Sunrise, sunset, solar noon and day length at a place on a day (today by default), with how much longer or shorter the day is than the day before, civil, nautical and astronomical twilight, and the golden and blue hours for photos. Local clock time, to the minute.

city

find_city

The site's places whose name starts with the text (Polish or English names, with or without Polish letters): 258 places (Polish cities, places for trips and a few cities abroad), with coordinates, time zone and page.

clock

clock_change

When the clocks change in Poland in a year (this year by default): the dates, which way and at what time, and the next change from today.

solstice

solstice

The December and June solstices of a year (this year by default) to the minute, Polish time; with a place, also its shortest and longest day, the earliest sunset and the latest sunrise of the winter.

Endpoints

URL	Transport	State	Latency	Checked
https://slonce.info.pl/mcp	streamable-http	answering	873 ms	12 min ago

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slonce.info.pl — questions

Answers built from our own checks of this server.

What can slonce.info.pl do?

It exposes 7 tools, read directly from the server on our last check. Among them: clock_change, find_city, moon_phases, moon_times, solstice, sun_calendar and 1 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

What is slonce.info.pl mostly used for?

Its tools cluster around sun and moon. That is what this server is built to work with — the grouping comes from the actual tool names, not from a category we assigned.

Is slonce.info.pl working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 262 ms. The bar chart above shows every period we have measured.

How do I connect slonce.info.pl?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does slonce.info.pl need an API key?

No. slonce.info.pl completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 7 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is slonce.info.pl?

It answers our handshake in 262 ms on average, which is faster than 52% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.