Auseklis — independently scanned and version-tracked by SaferSkills.
SaferSkills independently audited Auseklis (Agent Skill) and scored it 100/100 (green). The audit ran 55 deterministic rules across Security, Supply Chain, Maintenance, Transparency, and Community; it found 0 high-severity and 0 lower-severity findings. The full rule-by-rule trace and per-finding evidence are below. Free, methodology-open.
Findings & checks · 0 flagged
Every scanned point with the score it earned and what moved between them.
First recorded scan — no prior version to compare against.
The primary manifest — the file an agent reads to learn what this artifact does.
Astrology MCP server — natal charts, transits, synastry, progressions, returns, eclipses, retrogrades, moon phases. Computed from a real ephemeris, so AI agents stop hallucinating planet positions.
Named after the Latvian morning star. MIT-licensed with no AGPL ephemeris data — see Licensing.
| Tool | What it does |
|---|---|
get_planet_position | Position of one body/point at a moment (sign, degree, speed, retrograde) |
compute_natal_chart | Full birth chart: 13 points, houses, angles, aspects |
compute_transits | Aspects from the current (or any) sky to a natal chart |
compute_progressions | Secondary progressions (day-for-a-year) |
compute_synastry | Cross-chart aspects between two people |
compute_composite_chart | Midpoint composite chart of a relationship |
find_returns | Solar/lunar/planetary returns (exact moments) |
get_moon_phase | Phase, illumination, Moon sign, next four quarters |
find_eclipses | Lunar/solar eclipses with signs, incl. local visibility |
find_retrograde_periods | Station retrograde/direct moments for any planet |
find_sign_ingresses | When a body changes signs (equinoxes, Saturn ingresses, …) |
find_aspect_times | Exact moment a transit perfects ("when does Saturn square my Sun?") |
Plus two prompts (natal_chart_reading, current_sky_report) and a glossary resource (auseklis://glossary).
Features: local birth times with IANA timezones (full historical DST handling) · tropical and sidereal (Lahiri, Fagan/Bradley) zodiacs · whole-sign, equal, Porphyry, and Placidus houses · mean lunar nodes and Black Moon Lilith.
claude mcp add auseklis -- npx -y auseklis{
"mcpServers": {
"auseklis": {
"command": "npx",
"args": ["-y", "auseklis"]
}
}
}No API keys, no configuration — the ephemeris is computed locally.
Download auseklis.mcpb from the releases page and double-click to install in Claude Desktop. Or build it yourself: npm run bundle.
The same server runs as a Cloudflare Worker speaking Streamable HTTP. Deploy it to your own account:
npm run deploy # wrangler deploy
claude mcp add --transport http auseklis https://auseklis.<your-subdomain>.workers.dev/mcpSet the MCP_SHARED_SECRET secret to require a bearer token.
The model handles place-name → coordinates; the server handles local-time → UTC via the IANA timezone database.
Positions come from astronomy-engine (VSOP87 + NOVAS C 3.1): ±1 arcminute for 1700–2200, far below the 1° resolution astrological interpretation uses. Event searches (stations, ingresses, returns, quarters) are refined to ~1 second of time. Verified in CI against published eclipse dates, the 2026 equinox, NOVAS Sun positions, and an independent Placidus implementation.
src/
├── ephemeris/ Astrology core — backend-agnostic
│ ├── engine.ts EphemerisBackend interface + astronomy-engine adapter (the swap seam)
│ ├── index.ts Charts, aspects, synastry, composite, progressions
│ ├── events.ts Time searches: returns, stations, ingresses, aspect times, moon phases
│ ├── eclipses.ts Eclipse searches with astrological context
│ ├── houses.ts Whole-sign, equal, Porphyry, Placidus (semi-arc solver)
│ ├── points.ts Mean lunar nodes, Black Moon Lilith
│ ├── sidereal.ts Ayanamsa (Lahiri, Fagan/Bradley)
│ └── time.ts IANA timezone → UTC conversion (no dependencies, uses Intl)
├── mcp/ Tool/prompt/resource definitions on @modelcontextprotocol/sdk
├── stdio.ts Local entry — `npx auseklis`
└── index.ts Remote entry — Cloudflare Worker, Streamable HTTP via @hono/mcpThe EphemerisBackend interface in engine.ts is the deliberate swap seam: a future Rust/WASM clean-room ephemeris only needs to reimplement that one interface.
npm install
npm run typecheck # strict TS
npm test # 20-check smoke suite (ephemeris references + MCP end-to-end)
npm run build # emit dist/
npm run dev # local Cloudflare Worker on :8787
npx @modelcontextprotocol/inspector node dist/stdio.js # poke tools interactivelySee docs/tools.md for the full tool reference and docs/architecture.md for design notes.
MIT. This project deliberately avoids the Swiss Ephemeris (.se1/.se2 data files and the sweph bindings): those are AGPL-licensed, which would impose AGPL obligations on any network service built on them. Everything here is computed from MIT-licensed code with no external data files — safe to embed, fork, and deploy commercially. Details in NOTICE.
The trade-off: no Chiron or asteroids (they need ephemeris data files). They are on the roadmap via public-domain JPL-derived data.
EphemerisBackend seam~30 seconds. Free. No account. Every finding cites a rule and a line of evidence.