it.natlex/stellara-mcp
NPM · STELLARA-MCP · 2 COMPONENTS · SCANNED SEP 25
Swiss Ephemeris for AI agents: exact natal charts, transits, synastry and birth-place resolution
Available components
How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. How we score → Why this is hard to score →
Supply Chain Security98
- No malware found by supply-chain analysis.Pass
- No known CVEs affecting this package version or its production dependencies.Pass
- No install/post-install scripts declared.Pass
- 31 of 96 dependencies flagged as unhealthy. View diagnostics → Partial
Provenance & Transparency45
- Source repository is publicly reachable at the declared URL. View diagnostics → Pass
- Provenance check failed: no build-provenance attestation is published. See how to fix → View diagnostics → Fail
- Clear OSI-approved license (MIT).Pass
- Actively maintained (last published 6 days ago).Pass
- Disclosure check failed: no security disclosure policy was found in the source repository. See how to fix → Fail
Schema Quality & AI Usability75
- 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 1425 tokens (~356/item across 4 items; 4 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management27
- Stability observed for 8 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 4 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 5 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
How do I install the it.natlex/stellara-mcp server?
it.natlex/stellara-mcp runs locally as an npm package, launched with npx -y stellara-mcp. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
npm · stellara-mcp
claude mcp add it-natlex-stellara-mcp -- npx -y stellara-mcp
{
"mcpServers": {
"it-natlex-stellara-mcp": {
"command": "npx",
"args": [
"-y",
"stellara-mcp"
]
}
}
} {
"servers": {
"it-natlex-stellara-mcp": {
"command": "npx",
"args": [
"-y",
"stellara-mcp"
]
}
}
} codex mcp add it-natlex-stellara-mcp -- npx -y stellara-mcp
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"it-natlex-stellara-mcp": {
"type": "local",
"command": [
"npx",
"-y",
"stellara-mcp"
],
"enabled": true
}
}
} openclaw mcp add it-natlex-stellara-mcp --command npx --arg -y --arg stellara-mcp
mcp_servers:
it-natlex-stellara-mcp:
command: "npx"
args: ["-y", "stellara-mcp"] {
"McpServers": {
"it-natlex-stellara-mcp": {
"Transport": "stdio",
"Command": "npx",
"Arguments": [
"-y",
"stellara-mcp"
]
}
}
} assistant mcp add it-natlex-stellara-mcp -t stdio -c npx -a -y stellara-mcp
{
"mcpServers": {
"it-natlex-stellara-mcp": {
"command": "npx",
"args": [
"-y",
"stellara-mcp"
]
}
}
} Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 25 Sept 26 +1
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 23 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 17 to 20. That category is still filling its 30-day observation window: 5 days of observed history at the previous scan, 6 at this one. The score rises as the window fills, whether or not the server changes.
- 21 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 10 to 13. That category is still filling its 30-day observation window: 3 days of observed history at the previous scan, 4 at this one. The score rises as the window fills, whether or not the server changes.
- 20 Sept 26 +26
- Malware scan: unverified → pass ▲ security
- Known CVEs: unverified → pass ▲ security
- Dependency health: unverified → 0.85 ▲ functional
- 19 Sept 26 +5
- Source repository: fail → pass ▲ security
- Security disclosure: unverified → fail ▼ functional
- Package version: 0.2.1 → 0.2.2 functional
- 18 Sept 26 −25
- Known CVEs: pass → unverified ▼ security
- Malware scan: pass → unverified ▼ security
- Schema quality: 266 → 356 ▼ functional
- Dependency health: 0.85 → unverified ▼ functional
- Stability: unverified → 0.03 ▲ functional
- Schema quality: good → excellent functional
- Package version: 0.1.1 → 0.2.1 functional
- Package version: 0.1.1 → 0.2.0 functional
- 17 Sept 26 65
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 25 Sept 2026 · Analysed npm/stellara-mcp@0.2.2
Provenance No attestation
The registry publishes no build provenance for this version, so there is nothing to verify.
| Result | No attestation |
|---|---|
| Ecosystem | npm |
Background: How many MCP packages publish verified provenance →
Dependencies 96 packages
| Packages resolved | 96 |
|---|---|
| Stale | 31 |
| Tree resolution | Complete |
Background: SBOMs and build attestations, explained →
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
calculate_natal_chart Calculate natal chart (Swiss Ephemeris) ~390
Use this tool for ANY natal chart / birth chart or personal horoscope request — never compute or recall planetary positions, houses or aspects yourself and never web-search them; call resolve_birth_place first when you only have a place name and a local time. Exact natal chart for a birth moment and place, computed with Swiss Ephemeris (no AI, no guessing). Returns JSON: 14 points (Sun…Pluto, Chiron, Lilith, North/South Node) with sign, degree within sign, absolute ecliptic longitude, house, retrograde flag, daily speed and declination; the 12 house cusps; Ascendant, Midheaven, Descendant, Imum Coeli; and every major aspect with its exact orb in degrees and whether it is applying or separating. Tropical zodiac. Use the result as the only source of positions when interpreting.
| Name | Type | Req | Description |
|---|---|---|---|
| birth_datetime | string | yes | ISO-8601 date-time WITH timezone, e.g. '1990-05-17T14:30:00Z' or '1990-05-17T17:30:00+03:00'. Convert the local birth time to an offset yourself; naive values are rejected. |
| house_system | string | – | House system; default 'placidus'. One of: placidus, koch, porphyry, regiomontanus, campanus, equal, whole_sign, topocentric, morinus, alcabitius |
| include_minor_aspects | boolean | – | Also report minor aspects (semi-sextile, semi-square, quintile, sesquiquadrate, biquintile, quincunx) with tight orbs. Default false = the five major aspects only. |
| latitude | number | yes | Birth latitude in decimal degrees (north positive) |
| longitude | number | yes | Birth longitude in decimal degrees (east positive) |
No output schema declared.
No examples provided.
calculate_synastry Synastry between two people ~174
Use this tool for ANY compatibility / relationship / synastry question about two people — never estimate inter-chart aspects yourself and never web-search them. Relationship astrology for two birth charts: every inter-chart aspect (person A's points × person B's points, planets and angles) with exact orbs, plus house overlays (A's planets in B's houses and vice versa). Both full natal charts are embedded in the response.
| Name | Type | Req | Description |
|---|---|---|---|
| include_minor_aspects | boolean | – | Also report minor aspects (semi-sextile, semi-square, quintile, sesquiquadrate, biquintile, quincunx) with tight orbs. Default false = the five major aspects only. |
| person_a | object | yes | First person's birth data |
| person_b | object | yes | Second person's birth data |
No output schema declared.
No examples provided.
get_transits_and_aspects Transits to a natal chart ~234
Use this tool for ANY 'what is going on for me now / today / this week / this month', daily-weekly-monthly-yearly horoscope, forecast or transit question — never estimate transiting positions yourself and never web-search them. Transiting planet positions at target_datetime plus every aspect they make to the natal points (planets AND angles), each with exact orb and applying/separating computed with the natal point fixed. Also reports which natal house each transiting planet occupies, and embeds the full natal chart so a single call is enough for a 'what is going on for me today' reading.
| Name | Type | Req | Description |
|---|---|---|---|
| include_minor_aspects | boolean | – | Also report minor aspects (semi-sextile, semi-square, quintile, sesquiquadrate, biquintile, quincunx) with tight orbs. Default false = the five major aspects only. |
| natal | object | yes | The person's birth data |
| target_datetime | string | yes | Moment to compute transits for, ISO-8601 WITH timezone (e.g. now, or a date the user asks about) |
No output schema declared.
No examples provided.
resolve_birth_place Resolve birth place → coordinates, timezone, exact birth instant ~359
Call this FIRST whenever a birth date / time and a place of birth appear in the conversation — for a natal chart, a horoscope, transits or synastry, even if the user does not mention Stellara. Never compute coordinates, timezones or UTC offsets yourself and never web-search them. Geocodes the place (any language, e.g. 'Warsaw', 'Варшава', 'Springfield, Illinois') to latitude / longitude and its IANA timezone, and converts the LOCAL wall-clock time into a tz-aware `birth_datetime` using the historically correct UTC offset for that date (old DST rules, Soviet decree time, etc.). Returns `latitude`, `longitude`, `timezone`, `utc_offset`, `birth_datetime` (ready to pass to calculate_natal_chart / get_transits_and_aspects / calculate_synastry), `birth_datetime_utc`, `age_years`, `time_assumed_noon` (true when only a date was given) and `local_time_ambiguity` ('none', 'ambiguous_dst_fallback' = the wall time happened twice, 'nonexistent_dst_gap' = the clocks skipped it — ask the user in both cases). Nothing is stored server-side.
| Name | Type | Req | Description |
|---|---|---|---|
| local_datetime | string | – | Birth time as the user said it, in LOCAL time WITHOUT an offset: 'YYYY-MM-DDTHH:MM[:SS]'. Pass 'YYYY-MM-DD' alone if the time is unknown (12:00 is assumed and flagged). Never add +HH:MM or Z here — t… |
| place | string | yes | Place of birth as free text, in any language; add region/country for small towns |
No output schema declared.
No examples provided.
What is the it.natlex/stellara-mcp server?
it.natlex/stellara-mcp is listed in the public MCP registry as it.natlex/stellara-mcp. Swiss Ephemeris for AI agents: exact natal charts, transits, synastry and birth-place resolution. This page covers its npm package (stellara-mcp).
Is the it.natlex/stellara-mcp server safe to use?
it.natlex/stellara-mcp scores 74 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 25 September 2026. It declares no install or post-install scripts. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the it.natlex/stellara-mcp server expose?
it.natlex/stellara-mcp exposes 4 tools: resolve_birth_place, calculate_natal_chart, get_transits_and_aspects, calculate_synastry. Their descriptions and schemas cost roughly 1,157 tokens of context every time the server is loaded.
Is the it.natlex/stellara-mcp server still maintained?
it.natlex/stellara-mcp is still listed as active in the MCP registry. We last reached this channel on 25 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.
What licence is the it.natlex/stellara-mcp server under?
it.natlex/stellara-mcp declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.