astronomy

MCP serverEverything else

Lets your agent calculate sun, moon, planet and eclipse times like sunrise, twilight and star positions.

Available today. Use it from your connected AI after setup.

Add ahel to your AI once: Claude, ChatGPT, Cursor, Claude Code or Codex. Then ask it to use this.

Then ask your AI: use the astro sky today tool from astronomy

About this server

Read-only astronomy calculations: sun, moon, planets, eclipses, twilight and star positions.

Install astronomy

The server’s own address, for the clients that take one directly. Or connect ahel once and every client you use reads it from one address, with the account kept on ahel rather than in each client’s config.

  • Claude Code

    claude mcp add --transport http --scope user astronomy 'https://www.cyclecalcs.com/mcp'

    Run it once in your project, then open /mcp to approve any sign-in the server asks for.

  • Claude Desktop

    https://www.cyclecalcs.com/mcp

    Add a custom connector in Settings, paste this address, and approve the sign-in.

  • Cursor

    cursor://anysphere.cursor-deeplink/mcp/install?name=astronomy&config=eyJ1cmwiOiJodHRwczovL3d3dy5jeWNsZWNhbGNzLmNvbS9tY3AifQ==

    Open the link and Cursor adds the server at that address.

  • ChatGPT

    https://www.cyclecalcs.com/mcp

    In Settings, enable Developer mode, create an MCP app, and paste this address. Your plan and workspace must allow custom apps.

  • Codex

    codex mcp add astronomy --url 'https://www.cyclecalcs.com/mcp'

    Run it once, then sign in with codex mcp login astronomy if the server asks for an account.

Tools it offers (11)

What this server listed when ahel dialed its public endpoint in Sep 2026, with no key and no account of yours. The names are the server’s own.

  • astro_sky_today
  • astro_sun
  • astro_moon
  • astro_moon_phases
  • astro_positions
  • astro_rise_set
  • astro_eclipses
  • astro_dark_window
  • astro_planet_board
  • astro_planet_events
  • astro_find_place

ahel review

  • S5low
    no public repository, nothing to review

Automated review, not a security audit. Ruleset v1.

Advanced
Delivery
astronomy MCP server → your ahel connector (mcp.ahel.ai) → your AI.
Item type
mcp-server
Key
com-cyclecalcs-astronomy
Hosted endpoint
https://www.cyclecalcs.com/mcp