Server data from the Official MCP Registry
Astrology/ephemeris MCP server: 9 chart tools — positions, houses, aspects, transits, electional.
Astrology/ephemeris MCP server: 9 chart tools — positions, houses, aspects, transits, electional.
Remote endpoints: streamable-http: https://www.ephemengine.com/api/mcp
Caelus-MCP is a well-architected astrological ephemeris server with strong separation of concerns, proper input validation, and no authentication requirements (appropriate for its stateless computational purpose). The codebase demonstrates good security practices: comprehensive input schema validation using Zod, no hardcoded credentials, no dangerous patterns like eval or unsanitized subprocess calls, and careful handling of file paths. Minor code quality observations exist (broad catch blocks, optional resource loading that silently degrades) but do not represent security risks. Permissions are appropriate for a calculation engine that reads ephemeris data and performs astronomical computations. Supply chain analysis found 1 known vulnerability in dependencies (0 critical, 1 high severity). Package verification found 1 issue (1 critical, 0 high severity).
5 files analyzed · 6 issues found
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This plugin requests these system permissions. Most are normal for its category.
Unverified package source
We couldn't verify that the installable package matches the reviewed source code. Proceed with caution.
Available as Local & Remote
This plugin can run on your machine or connect to a hosted endpoint. during install.
From the project's GitHub README.
Astrological ephemeris monorepo. MIT, no Swiss Ephemeris code, no AGPL, no ephemeris files. Live at ephemengine.com.
| Path | npm | Description |
|---|---|---|
packages/caelus | caelus | TypeScript engine (~85 KB gzipped, zero deps) |
packages/caelus-mcp | caelus-mcp | MCP server: charts, transits, synastry, events, eclipses |
packages/birth | caelus-birth | Birth time + place → UT (timezone and DST resolution) |
packages/wheel | caelus-wheel | React SVG chart wheel, zero runtime deps |
apps/web | — | Next.js site: playground, validation, edge /api/chart |
caelus-starter | — | Next.js starter app (separate repo) |
The Python reference engine and data-fitting pipeline live in python/;
they mint the coefficient data and golden fixtures and are not a runtime
dependency.
npm install
npm run build
npm test
npm run dev -w web
http://localhost:3000 — live chart in the browser.
Edge API: GET /api/chart?date=…&lat=…&lon=….
main — stable releasesdev — active developmentBe the first to review this server!
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