"Astro" matching MCP tools:

• publish_landing

  Layero

  Publish a site to Layero — from here, with no terminal. Not only generated landings: this takes ANY ready static bundle, so it is also the answer to "deploy my site". Requirements — `index.html` at the root, at most 200 files, 8 MB in total, 2 MB per file. Binary files (images, fonts) must come with `encoding="base64"`; sent as text they are silently corrupted. A project that still needs a build step (Vite, Next, Astro — anything where the answer is `npm run build`) does NOT go here: publish its build output, or tell the user to run `npx layero@latest deploy`, which builds on our side. Send the ACTUAL file contents: the server does not remember the bundle between calls. If the user edited the text after generation, pass the current versions, or what gets published is what used to be there. Pass `project` (the id of an existing project) when republishing the same landing; without it the platform finds a project with that name or creates a new one. Returns as soon as the build finishes, or after ~40s with `status` `building` and the `deploy_id` — the build keeps going on its own. Never call this tool a second time to "retry" a build that is still running: that starts a SECOND build. Follow `next_action`.

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• publish_landing

  Layero

  Publish a site to Layero — from here, with no terminal. Not only generated landings: this takes ANY ready static bundle, so it is also the answer to "deploy my site". Requirements — `index.html` at the root, at most 200 files, 8 MB in total, 2 MB per file. Binary files (images, fonts) must come with `encoding="base64"`; sent as text they are silently corrupted. A project that still needs a build step (Vite, Next, Astro — anything where the answer is `npm run build`) does NOT go here: publish its build output, or tell the user to run `npx layero@latest deploy`, which builds on our side. Send the ACTUAL file contents: the server does not remember the bundle between calls. If the user edited the text after generation, pass the current versions, or what gets published is what used to be there. Pass `project` (the id of an existing project) when republishing the same landing; without it the platform finds a project with that name or creates a new one. Returns as soon as the build finishes, or after ~40s with `status` `building` and the `deploy_id` — the build keeps going on its own. Never call this tool a second time to "retry" a build that is still running: that starts a SECOND build. Follow `next_action`.

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• astro_planet_events

  CycleCalcs Astronomy

  The apparition cycle of the inferior planets as dated events: inferior and superior conjunctions, greatest eastern and western elongations, peak brightness (a Venus-only event: Mercury's brightness peaks behind the Sun where it cannot be seen), and the rare transits across the Sun. With no dates it also reports where each body is in its cycle right now: morning star or evening star, the conjunctions bounding the current apparition, and the live elongation, phase, magnitude and apparent size. The right tool for "when does Venus become the morning star", "when is Venus brightest", or "Mercury's next greatest elongation". For tonight's visibility of all eight planets use astro_planet_board. Conjunction instants use the classical heliocentric convention, named on each event.

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• astro_get_moon_phase

  NOAA Tides and Currents

  Get the moon phase for a date (or each day of a date range if end_date is given): phase name (New Moon, Waxing Crescent, ...), illuminated fraction, age in days within the 29.53-day cycle, distance (km), apparent diameter (degrees), and waxing/waning. Tide context: spring tides (largest range) occur just after new and full moons; neap tides after quarter moons. Computed locally — no NOAA data involved.

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• astro_moon

  CycleCalcs Astronomy

  The Moon at an instant or as a daily series: phase name and angle, illuminated fraction, distance, apparent size, libration, bright limb, and the next quarter phases. A location adds rise/set and altitude. For a calendar of new and full moons use astro_moon_phases; for the Moon's exact coordinates use astro_positions.

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• astro_eclipses

  CycleCalcs Astronomy

  Solar and lunar eclipses: the next or previous from a date, or all in a range, with type, magnitude, obscuration, Saros series and global geometry. With a location it adds local circumstances, contact times, and an explicit visible-from-here answer; set visible_only to true to keep only eclipses visible there. NOTE: count applies per type, so count=3 with type "both" can return six events.

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• arxiv_list_categories

  arxiv-mcp-server

  List arXiv category codes and names. Useful for discovering valid category filters for arxiv_search. Lists subject classes only; arxiv_search also accepts a bare archive code (the part before the dot, e.g. "astro-ph" or "cs") to search a whole archive at once.

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• get_time_context

  Smarter Weather

  Complete temporal context for a location: local time, timezone, 14-day calendar with day names and Today/Tomorrow offsets, sunrise/sunset/solar times (from the weather pipeline's astro product), and moon phase. Use whenever you need to reason about dates, times, or daylight for a location -- including "what time is sunset?", "is it dark there now?", or "what day of the week is the 4th-day forecast?". Accepts a place name directly. Example: {"location": "Seattle"}.

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• astro_rise_set

  CycleCalcs Astronomy

  Rise, upper transit, set and lower transit for one body at one location, with an explicit status at extreme latitudes (circumpolar, never rises) instead of missing values. Accepts fixed radec targets. For the Sun specifically, astro_sun returns richer twilight structure; for positions between events use astro_positions.

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• astro_planet_board

  CycleCalcs Astronomy

  All eight planets in one call for a date and optional location: constellation, magnitude, apparent size, elongation from the Sun, morning or evening sky, retrograde state with the next station, rise/set, and a worth-looking-tonight assessment. The right tool for "which planets are visible tonight". For exact coordinates of specific bodies use astro_positions.

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• astro_find_place

  CycleCalcs Astronomy

  Resolve a place name to coordinates, region, country, IANA timezone and a stable place_id, or reverse-look-up the nearest places to a lat/lon. Results are GeoNames data (CC BY 4.0); the response carries the required credit in its attribution field, which must be preserved when results are shown. Note the other tools accept a place argument directly, so this is only needed to disambiguate a name, filter by country, or reverse-geocode.

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• astro_sky_today

  CycleCalcs Astronomy

  One-call snapshot of the whole sky for a place and moment: moon phase and illumination, which planets are up and worth looking at, the next eclipse, and (with a location) sun times. Reach for this first when the question is broad, like "what is in the sky tonight". For solar-day detail use astro_sun; for choosing an observing night use astro_dark_window; for one planet's exact position use astro_positions.

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• astro_moon_phases

  CycleCalcs Astronomy

  Every new moon, quarter and full moon in a window (or the next few from a date): each with its exact instant, distance, apparent size, supermoon classification under both competing definitions, traditional full-moon name, and any eclipse falling on it. Use for "when is the next full moon" and phase calendars. For the Moon's state right now use astro_moon.

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• astro_positions

  CycleCalcs Astronomy

  Exact positions for up to 20 bodies at an instant or over a time grid: right ascension and declination in both J2000 and of-date frames, ecliptic longitude and latitude, distance, and, with a location, altitude and azimuth with refraction stated per field. Use for "where exactly is X". Do not pass earth. For rise and set TIMES use astro_rise_set; for a visibility overview of all planets use astro_planet_board.

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• astro_dark_window

  CycleCalcs Astronomy

  The genuinely dark, moonless observing window for a night: astronomical night intersected with the Moon being down, ranked across up to 62 nights with a trend. The right tool for "when should I stargaze / photograph the Milky Way / observe deep-sky objects". Location required. For plain twilight times use astro_sun.

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• astros

  Open Notify

  People currently in space — name + craft (ISS / Tiangong / etc.).

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• get_platform

  webbersites-x402-data-api

  What is this website built with? Deterministic fingerprinting from one fetch — like the old meta generator tag, but it works even when sites strip it. Detects WordPress, Shopify, Squarespace, Wix, Webflow, GoDaddy, Drupal, Joomla, Ghost, Magento, Next.js/Nuxt/Gatsby/Astro and other frameworks, static HTML, custom PHP — with the evidence for the verdict, the raw generator tag when present, and the server/CDN stack. No AI. ($0.002 per call, paid via x402)

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• stargazing_forecast

  7timer

  Astronomy observing forecast from 7Timer! ASTRO — the metrics stargazers and astrophotographers use to decide if tonight is good for observing: cloud cover, atmospheric seeing (steadiness), and sky transparency, at 3-hour resolution out to 72 hours. Each point gets a human-readable label and an observing_quality verdict, plus a best_window summary of the clearest/steadiest hours. Keyless.

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• astronomy

  Weatherapi

  Get astronomy data for a location and date: sunrise, sunset, moonrise, moonset, moon phase, and moon illumination. Example: astronomy({ q: "Reykjavik", dt: "2026-06-21" }).

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• astro_get_sun_position

  NOAA Tides and Currents

  Get the sun's position for a date, time, and location: azimuth (degrees clockwise from north as rendered here), altitude above the horizon (degrees), plus approximate declination and right ascension. Use for: shadow/lighting analysis, solar exposure. Computed locally with suncalc; declination/RA are approximate.

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