Sunrise-Sunset MCP server
Featured official server
2 tools · Last check that passed 4 Nov 2026, 12:15 UTC
Sunrise-Sunset's own remote MCP server gives an agent sunrise, sunset, twilight, golden hour and moon times for any place on Earth, for one day or up to 366 days in one call, with no sign-up or API key. Once a day, Stackduke connects to it the way any MCP client would, with no account and no sign-in, and lists its tools. It never runs them.
All 2 tools
| Tool | Counted as |
|---|---|
get_sun_times | Said to only read |
get_sun_times_range | Said to only read |
The tools the server listed at the last check that passed, at its default address and settings, with no sign-in; an account that signs in, or other settings, may see other tools. What a tool is counted as doing is Stackduke's cautious reading of the server's labels, the tool's name and its description: where they disagree it takes whichever says the tool can do most, so it overcounts on purpose. It does not say the server is safe, and it does not list what a tool cannot do. Descriptions are not shown, because they are written for models and may try to steer them.
Recent checks
21 of the last 21 checks passed
A check passes when the server lists its tools. Checked at https://api.sunrise-sunset.org/mcp.
Recent changes
4 Nov 2026, 12:15 UTC, after a check on 3 Nov 2026, 12:01 UTC
Inputs or outputs changed on get_sun_times, get_sun_times_range.
From the scan of 4 Nov 2026, 12:43 UTC. "Changed" and "Can do more" count changes from the last 30 days; older ones stay listed here. A change made and undone between two checks is not seen. Every check is in the scanner's public data.
Know when Sunrise-Sunset's tools change.
One email when Sunrise-Sunset's official MCP server adds, removes or changes tools, with what changed. Nothing else.
What to watch for
- Sunrise-Sunset requires attribution: credit sunrise-sunset.org wherever people can see where the data comes from, as with the rest of its API. Sunrise-Sunset's MCP page
- Sunrise-Sunset says times come back in the local time zone of the place asked about, not in UTC. Sunrise-Sunset's API documentation
- Some events do not happen on some days, such as a moonrise or moonset about one day a month, and then the time comes back empty. Sunrise-Sunset's API documentation
How to limit it
With Sunrise-Sunset's own settings, as its documentation describes them. Stackduke has not tested them.
- For several days at one place, we recommend asking for a date range, which Sunrise-Sunset allows for up to 366 days in a single request, rather than one call per day. Sunrise-Sunset's API documentation
- Sunrise-Sunset says the server needs no API key and no sign-up, so we recommend connecting it with no credentials. Sunrise-Sunset's MCP page
What Stackduke is designed to do
Stackduke is designed to sit between your agents and their MCP servers: to check each tool call against your rules before it runs, hold the risky ones for a person to approve, and keep a record of what was decided.
It does not yet forward or block tool calls for customers. Today it reads what this server offers and publishes what changes.