Thirdtrail
Elevation-corrected sun, moon, twilight, solar and tide data for any point on Earth
Connect it
Settings → Connectors → Add custom connector
URL: https://thirdtrail.life/mcpSettings → Apps & Connectors → Advanced → Developer mode
Create connector with URL: https://thirdtrail.life/mcp{
"mcpServers": {
"thirdtrail": {
"url": "https://thirdtrail.life/mcp",
"headers": {
"Authorization": "<YOUR_AUTHORIZATION>"
}
}
}
}claude mcp add --transport http thirdtrail https://thirdtrail.life/mcp --header "Authorization: <value>"{
"servers": {
"thirdtrail": {
"type": "http",
"url": "https://thirdtrail.life/mcp",
"headers": {
"Authorization": "<YOUR_AUTHORIZATION>"
}
}
}
}8 tools, verified live
get_sun_moon_timesread-onlySunrise, sunset, solar noon, civil, nautical and astronomical twilight, golden and blue hour, moonrise, moonset and moon phase for a location, one entry per day. Use it for any question about when the sun or moon rises, sets or gets dark; for the sun's angle at a given moment use get_solar_position, and for tides alongside the sun use get_tide_window. Pass elevation whenever you know it: it shifts
get_prayer_timesread-onlyFajr, sunrise, dhuhr, asr, maghrib and isha for one date at a location, elevation-corrected. Use it for Islamic prayer schedules; for general sunrise, sunset and twilight use get_sun_moon_times. school is required and sets the fajr and isha rules; asr_method picks the shadow rule and defaults to shafi. date defaults to today. Requires an API key on a paid Ephemerides plan.
get_solar_positionread-onlyThe sun's position at one instant: azimuth, altitude, zenith, declination, hour angle and equation of time, plus clear-sky irradiance (GHI, DNI and DHI in W/m²) when include asks for it and the plan covers it. Use it for where the sun is at a given moment; for its track through a whole day use get_solar_path, and for rise and set times use get_sun_moon_times. timestamp defaults to now. Positions a
get_solar_pathread-onlyThe sun's azimuth and altitude through one UTC day, sampled every interval: a list of timestamped positions. Use it for shading studies, PV siting and panel-angle planning; for a single instant use get_solar_position. date defaults to today and interval to 15m. Requires an API key on a paid Solar plan.
get_daily_light_integralread-onlyClear-sky Daily Light Integral in mol/m²/day for each day in a range: photosynthetically active radiation integrated from sunrise to sunset. Use it to plan crop growth or supplemental greenhouse lighting; it assumes cloudless skies, so treat it as the ceiling for the site. Pass from and to together for a range of UTC days, or neither for today. Requires an API key on a paid Solar plan.
get_tide_extremesread-onlyHigh and low water times and heights at any coastal point, from the FES2022 global tide atlas: a list of events, each with type (high or low), time and height_m. Use it for when high or low tide is; for a continuous curve use get_tide_heights, and for tides together with sunrise, golden hour and moon phase use get_tide_window. Heights are metres relative to MEAN SEA LEVEL, not chart datum — never
get_tide_heightsread-onlyWater height at a coastal point at a fixed step: a list of time and height_m pairs. Use it to plot a tide curve or read the height at a particular time; for just the highs and lows use get_tide_extremes. Metres relative to mean sea level, not chart datum. Defaults: from today, 2 days, and the finest step the plan allows, but no finer than 10m. Requires an API key on a paid Tides plan.
get_tide_windowread-onlyPer day: high and low waters together with sunrise, sunset, golden and blue hour, twilight and moon phase in a single call. The planning tool for coastal photography, fishing and shore work; use it instead of calling get_tide_extremes and get_sun_moon_times separately. Pass elevation when you know it: it shifts the sun and moon times — roughly three minutes at clifftop height — but never the tide
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