Stellarhound — stargazing forecasts, dark-sky sites & aurora
Live stargazing forecasts: per-night sky scores, dark-sky sites, aurora & light pollution anywhere.
Connect it
Settings → Connectors → Add custom connector
URL: https://stellarhound.com/mcpSettings → Apps & Connectors → Advanced → Developer mode
Create connector with URL: https://stellarhound.com/mcp{
"mcpServers": {
"stellarhound-mcp": {
"url": "https://stellarhound.com/mcp"
}
}
}claude mcp add --transport http stellarhound-mcp https://stellarhound.com/mcp{
"servers": {
"stellarhound-mcp": {
"type": "http",
"url": "https://stellarhound.com/mcp"
}
}
}5 tools, verified live
get_stargazing_conditionsread-onlyScore the next nights for stargazing at a location (0-100 per night). Use for "when should I stargaze this week near X", "is Saturday any good for the Milky Way", trip planning. Each night combines the three-layer cloud-cover forecast, moon illumination and up-fraction, and the astronomical-darkness window; `best_window` names the best upcoming night. Also returns the location
get_tonight_agendaread-onlyGet tonight's stargazing plan for a location: score, darkness window, and what to observe. Use when the user asks "what can I see tonight" / "is tonight worth going out". Returns tonight's sky score and darkness window plus a ranked agenda of observing targets appropriate for the location's sky darkness. Args: lat: Latitude in decimal degrees (-90..90). lon: Longi
find_dark_sky_sitesread-onlyRecommend dark-sky sites near a location, ranked by whether the drive is worth it. Use for "where should I drive to stargaze near X". Sites are grouped by drivability (how far), then ranked by a drive-worth score combining the best weather window over the next 7 nights, how much darker the site is than the user's location, and drive time. Drive times are approximate (straight-
get_aurora_forecastread-onlyGet the aurora (northern/southern lights) outlook for a location. Use for "any chance of aurora tonight near X". Combines the Kp-index forecast with the location's geomagnetic latitude to say whether aurora could be visible there, and when. Args: lat: Latitude in decimal degrees (-90..90). lon: Longitude in decimal degrees (-180..180). Returns {kp_forecast:[{
get_light_pollutionread-onlyEstimate light pollution at any point: approximate Bortle class and what's visible there. Use for "how dark is the sky at X" / "can I see the Milky Way from X". Returns the zenith-brightness-derived estimate (mpsas, approximate Bortle class) and a plain-language ceiling: what the Milky Way, naked-eye and telescope views are like under that sky. This is a satellite-data estimate,
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