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Your Cosmic Compass, fluent in your sky.
Celestium Pro turns the AI you already talk to into your Cosmic Compass, with the full Celestium engine behind it. Ask about the week, a relationship, or the right time to move, and the answer comes back read from your real chart; not a generic sun-sign line.
Celestium Pro is briefly offline while I focus on the app. It’s coming back soon; check in again shortly.
What Pro adds
The free tier stays free: your chart, a natal reading, the moon, tarot, I Ching, rituals, and daily check-ins. What follows is what the paid connection adds on top.
Cosmic weather, personalized
Each day’s transits read against your own chart, not a generic sun-sign forecast. Ask your assistant how the week sits and it answers from your sky.
Relationships, in full
Synastry, composite, and Davison for any two charts. Name a partner in a question and your daily weather reads alongside theirs.
Timing that holds
Transits, progressions, returns, electional windows, and a full year-ahead read built from your solar return and profections.
Where, not only when
Astrocartography: relocation and travel lines, so a move or a trip can be weighed against the map as well as the calendar.
The deeper techniques
Midpoints, harmonics, declinations, antiscia, sidereal, and heliacal. Computed and interpreted, not just returned raw.
Your patterns, mirrored back
A journal-and-transit correlation that notes what tends to co-occur with which sky. It records co-occurrence; it never claims cause.
How it connects
Temporarily offline. The connection is paused while I focus on the app; it’s coming back soon. The steps below are here for when it returns.
Celestium Pro is an MCP connection, so it works with any assistant that speaks MCP. You add one connection and your assistant can reach the whole Celestium suite. The free readings work the moment you connect; the Pro depth turns on once your assistant knows the email you subscribed with.
The connection URL
https://celestium-cosmic-compass.fly.dev/mcpClaude (Desktop or web, any paid plan)
Settings → Connectors → Add custom connector, then paste the URL above. To turn on Pro here, paste this URL instead; the connector can’t set a header, so your subscription email rides in the address:
https://celestium-cosmic-compass.fly.dev/[email protected]Claude Code
claude mcp add --transport http celestium https://celestium-cosmic-compass.fly.dev/mcpFor Pro, add your subscription email as a header:
claude mcp add --transport http celestium https://celestium-cosmic-compass.fly.dev/mcp \
--header "X-Celestium-Identity: [email protected]"Cursor or VS Code
Add this to your mcp.json:
{
"mcpServers": {
"celestium": {
"type": "http",
"url": "https://celestium-cosmic-compass.fly.dev/mcp",
"headers": { "X-Celestium-Identity": "[email protected]" }
}
}
}
The one-click button connects the free tier. Add the X-Celestium-Identity
line above, or use the ?identity= URL, to turn on Pro.
Unlocking Pro
The free actions need nothing. Pro turns on once your assistant carries the email you
subscribed with, in whichever way your app allows. Claude Code, Cursor, and VS Code set the
X-Celestium-Identity header; Claude (Desktop or web)
and the API can’t send a header, so add [email protected]
to the connection URL. You can also just tell your assistant which email you used. It’s how we
recognize your subscription, not a password; access is checked live, so it follows you if you cancel or resubscribe.
Questions
What is Celestium Pro? +
A subscription that turns the AI you already use into your Cosmic Compass, with the full Celestium astrology engine behind it. Any question you ask comes back grounded in your real chart, not a horoscope written for a whole sign.
What do I need to use it? +
An AI that speaks MCP; Claude, Claude Code, Cursor, and VS Code all work. You add one connection (see How it connects). Pro turns on once your AI knows the email you subscribed with: as a header, in the URL, or just tell it directly.
How is this different from the app or a reading? +
The iOS app is the Compass you hold; a natal reading is a one-time voiced portrait. Pro is the Compass in your AI: the ongoing depth, billed monthly. Different job, different rail.
Is my birth data private? +
Celestium computes only from the details you give your assistant, and nothing is ever sold. The deeper private layers of my own system never enter the product.
How does billing work? +
$12.99 a month, or $120 a year (about two months free), cancel anytime from your receipt. Promotion and creator codes are honored at checkout.