Check stargazing forecasts, find dark-sky sites, and track aurora visibility.
Stellarhound provides nightly sky scores, dark-sky site recommendations, light pollution estimates, and aurora forecasts for any location. Muse can help you plan stargazing trips, check if tonight is good for observing, and find the best nearby dark-sky locations.
Try asking Muse: "Is this Saturday good for stargazing near me, and where should I drive to see the Milky Way?"
Source: Found in the official MCP Registry (com.stellarhound/stellarhound-mcp) · First listed September 24, 2026
Each bar is one check, every 15 minutes. Green means it answered. Last checked 12 min ago.
What Muse can see: It does not ask you to sign in, so it cannot see your accounts. It only sees what Muse sends it from your request.
Before it acts: Read what Muse plans to do before you approve it, and remove the app from Muse when you stop using it.
musedirectory.ai is not part of Meta. More about how Muse handles your information
Not in Muse's Connectors list yet, but Muse can still use it. Copy the request below and paste it into Muse. Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.
https://stellarhound.com/mcpNot in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
Stellarhound is a remote MCP server, so any assistant that can add a custom connector by link can use it. Same link, same tools.
In ChatGPT, open Settings, then Connectors (called Apps & Connectors on some accounts).
Under Advanced settings, switch on Developer mode. That is what lets you add a connector by link.
Choose Create, give it a name, paste the link as the MCP server URL, and save. If it needs a sign-in, ChatGPT asks for it here.
Start a chat, open the tools menu, pick the connector, and ask. ChatGPT asks before it runs a tool the first time.
Custom connectors need a paid ChatGPT plan, and on Team, Enterprise and Edu accounts only an admin can add them. Our "Working" label means the server answered us; it cannot tell whether your plan lets you add it. All connectors that work in ChatGPT
In Claude, open Settings, then Connectors.
Choose Add custom connector, give it a name, and paste the link.
If it needs a sign-in, Claude sends you to it. Then turn the connector on in a chat from the tools menu and ask.
Custom connectors are available on paid Claude plans; on Team and Enterprise accounts an admin may need to add them. Our "Working" label means the server answered us; it cannot tell whether your plan lets you add it. All connectors that work in Claude
https://stellarhound.com/mcpResponse time at the last check: 800ms. Worked in 99.5% of checks over 30 days.
Screened, no issues found
Screening looks for known threats and hidden instructions at the time of the check, and runs again weekly and whenever the tool list changes. It cannot see the server's code, so only connect what you need and review what Muse asks to do. How screening works.
get_stargazing_conditionsScore 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 aget_tonight_agendaGet 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 thefind_dark_sky_sitesRecommend 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 get_aurora_forecastGet 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 get_light_pollutionEstimate 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 thecalculate_telescope_fovCompute astrophotography field of view, image scale, diffraction limits, and seeing sampling (fov-v1). Use when the user asks "will M31 fit in my telescope + camera", "what is the image scale of an RedCat 51 / Askar SQA55 / EdgeHD 8 with an ASI2600MC", or "am I undersampled or ovhttps://stellarhound.com/mcpNot in Muse's Connectors list yet, but Muse can still use it. Paste this into Muse: "Use Stellarhound to help me. It is a free service with an MCP server at https://stellarhound.com/mcp. It does not need an API key. Ask me before you share anything with it." Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.
At the last check (November 13, 2026, 14:15 UTC) the endpoint was working, answering in 800ms. Over the last 7 days it answered 100% of health checks. It is checked every 15 minutes.
It was screened on September 24, 2026 with the result "screened, no issues found". Screening checks the domain against threat feeds and reads the tools for hidden instructions and requests for passwords or card numbers. It cannot see the server's code, so grant only the access you need.
It exposes 6 tools, including get_stargazing_conditions, get_tonight_agenda, find_dark_sky_sites, get_aurora_forecast. For example, you could ask Muse: "Is this Saturday good for stargazing near me, and where should I drive to see the Milky Way?"
This listing was added from public sources (Found in the official MCP Registry (com.stellarhound/stellarhound-mcp)). If you build Stellarhound, claim it to correct the details and get your badge.
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