# Naelos.ai (remote · mcp.naelos.ai)

Astrology charts, transits and eclipses from NASA JPL data, 13,200 BC to AD 17,191. Free, no key.

- Trust score: 72/100 (medium)
- Change this week: +3
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- remote · `mcp.naelos.ai`: 72/100 (this document), [markdown](https://verifymcp.io/servers/ai-naelos-naelos/mcp.md), [page](https://verifymcp.io/servers/ai-naelos-naelos/mcp)

## Channel facts

- Endpoint: `https://mcp.naelos.ai/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.0.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-11-05.

- **Endpoint Security**: 74/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one.
  - HTTPS is enforced; there's no plaintext access path.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 63/100
  - AI-judged instruction clarity (good).
  - Context-footprint check failed: tool/resource definitions use about 1419 tokens (~141/item across 10 items; 10 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 27/100
  - Stability observed for 8 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 93/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 78% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 10 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 11 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### How do I install the Naelos.ai MCP server?

Naelos.ai is a hosted endpoint at https://mcp.naelos.ai/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add --transport http ai-naelos-naelos 'https://mcp.naelos.ai/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "ai-naelos-naelos": {
      "url": "https://mcp.naelos.ai/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "ai-naelos-naelos": {
      "type": "http",
      "url": "https://mcp.naelos.ai/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.ai-naelos-naelos]
url = "https://mcp.naelos.ai/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "ai-naelos-naelos": {
      "type": "remote",
      "url": "https://mcp.naelos.ai/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add ai-naelos-naelos --url 'https://mcp.naelos.ai/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  ai-naelos-naelos:
    url: "https://mcp.naelos.ai/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "ai-naelos-naelos": {
      "Transport": "http",
      "Url": "https://mcp.naelos.ai/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add ai-naelos-naelos -t streamable-http -u 'https://mcp.naelos.ai/mcp'
```

### Other

```json
{
  "mcpServers": {
    "ai-naelos-naelos": {
      "type": "http",
      "url": "https://mcp.naelos.ai/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-11-04 (score 72, +1)

No change was recorded against any check on this day. Stability & Change Management went from 20 to 23. That category is still filling its 30-day observation window: 6 days of observed history at the previous scan, 7 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-11-03 (score 71, 0)

- [security] The server rewrote its instructions, which are the text every model session reads
- [security] Tool “returns” rewrote its description, which is the text the model reads

### 2026-11-02 (score 71, +1)

No change was recorded against any check on this day. Stability & Change Management went from 13 to 17. That category is still filling its 30-day observation window: 4 days of observed history at the previous scan, 5 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-31 (score 70, +1)

No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-29 (score 69, +1)

- [functional improvement] Stability: unverified → 0.03

### 2026-10-28 (score 68)

First indexed and scored.

## MCP tools (10)

### `natal_chart` (~203 tokens)

Birth chart

A complete natal (birth) chart: every planet's sign, degree and house, the Ascendant and Midheaven, retrogrades, and the aspects between planets with exact orbs. Calculated from NASA JPL data by Naelos Ephemeris.

Input parameters:

- `date` (string, required): Birth date, YYYY-MM-DD
- `house_system` (string): House system (default placidus)
- `latitude` (number, required): Birthplace latitude in decimal degrees (north positive)
- `longitude` (number, required): Birthplace longitude in decimal degrees (east positive)
- `place` (string): Birthplace name, echoed back so the user can check the coordinates
- `time` (string): Local clock time, HH:MM (24-hour). If unknown, omit: noon is used, and houses and angles are then unreliable.
- `timezone` (string, required): IANA time zone of the birthplace, e.g. America/New_York. Historical daylight saving is applied from it.

### `sky_now` (~97 tokens)

The sky at a moment

Where every planet is at a moment (now by default): sign, degree, retrograde, and the aspects between them. Give a place to add houses and angles. Works for any date from 13,200 BC to AD 17,191.

Input parameters:

- `datetime_utc` (string): The moment in UTC, YYYY-MM-DDTHH:MM (default now)
- `latitude` (number)
- `longitude` (number)

### `planet_position` (~90 tokens)

One planet at any date

One body's tropical position on a date, anywhere from 13,200 BC to AD 17,191, with its speed and whether it is retrograde. For historical and ancient dates; dates before 1582 are proleptic Gregorian.

Input parameters:

- `body` (string, required)
- `date` (string, required)
- `time_utc` (string): HH:MM UTC (default 12:00)

### `transits` (~239 tokens)

Transits to a birth chart

Every exact transit of the planets (Sun to Pluto; the Moon is left out as it aspects everything monthly) to a birth chart's planets, Ascendant and Midheaven over a span, with the exact date of each and whether the planet is retrograde. Major aspects: conjunction, sextile, square, trine, opposition.

Input parameters:

- `date` (string, required): Birth date, YYYY-MM-DD
- `days` (integer): Length of the span in days (default 30, at most 366)
- `from` (string): Start date (default today)
- `latitude` (number, required): Birthplace latitude in decimal degrees (north positive)
- `longitude` (number, required): Birthplace longitude in decimal degrees (east positive)
- `place` (string): Birthplace name, echoed back so the user can check the coordinates
- `time` (string): Local clock time, HH:MM (24-hour). If unknown, omit: noon is used, and houses and angles are then unreliable.
- `timezone` (string, required): IANA time zone of the birthplace, e.g. America/New_York. Historical daylight saving is applied from it.

### `synastry` (~55 tokens)

Synastry between two people

The aspects between two people's birth charts (each one's planets to the other's), with exact orbs and strength.

Input parameters:

- `person_a` (object, required): First person's birth data
- `person_b` (object, required): Second person's birth data

### `returns` (~235 tokens)

Solar or lunar return

The solar return for a year (the moment the Sun returns to its birth position, the chart for that year) or the most recent lunar return (the last time the Moon reached its birth position), cast for the birthplace or another location.

Input parameters:

- `date` (string, required): Birth date, YYYY-MM-DD
- `kind` (string, required)
- `latitude` (number, required): Birthplace latitude in decimal degrees (north positive)
- `longitude` (number, required): Birthplace longitude in decimal degrees (east positive)
- `place` (string): Birthplace name, echoed back so the user can check the coordinates
- `return_latitude` (number): Where the person is for the return, if not the birthplace
- `return_longitude` (number)
- `time` (string): Local clock time, HH:MM (24-hour). If unknown, omit: noon is used, and houses and angles are then unreliable.
- `timezone` (string, required): IANA time zone of the birthplace, e.g. America/New_York. Historical daylight saving is applied from it.
- `year` (integer): Solar return year (default this year)

### `progressions` (~182 tokens)

Progressions and solar arc, now

The progressed chart as of today: secondary progressions (a day after birth for each year of life) or solar arc directions (every point moved by the Sun's progressed arc).

Input parameters:

- `date` (string, required): Birth date, YYYY-MM-DD
- `latitude` (number, required): Birthplace latitude in decimal degrees (north positive)
- `longitude` (number, required): Birthplace longitude in decimal degrees (east positive)
- `method` (string): Default secondary
- `place` (string): Birthplace name, echoed back so the user can check the coordinates
- `time` (string): Local clock time, HH:MM (24-hour). If unknown, omit: noon is used, and houses and angles are then unreliable.
- `timezone` (string, required): IANA time zone of the birthplace, e.g. America/New_York. Historical daylight saving is applied from it.

### `timing_events` (~71 tokens)

Ingresses, lunations and stations

Between two dates: planets changing sign, new and full Moons (and quarters), and retrograde and direct stations, each with its exact moment in UTC. At most two years per call.

Input parameters:

- `from` (string, required)
- `kinds` (array): Default all three
- `to` (string, required)

### `eclipses` (~64 tokens)

Eclipses

Solar and lunar eclipses between two dates (up to 20 years per call), with type, the exact moment of greatest eclipse and the eclipse degree. Works across the full 15,000-year span.

Input parameters:

- `from` (string, required)
- `to` (string, required)

### `naelos_library` (~75 tokens)

Naelos's national and empire charts

Which national charts (198) and empire charts (19) Naelos holds, each researched and sourced, with the founding event it is cast for. The charts themselves, with their times, places and readings, are in Naelos's Mundane suite.

Input parameters:

- `search` (string): Filter by name, e.g. France

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/ai-naelos-naelos/mcp#diagnostics

## Score history

- 2026-11-05: 72
- 2026-11-04: 72
- 2026-11-03: 71
- 2026-11-02: 71
- 2026-11-01: 70
- 2026-10-31: 70
- 2026-10-30: 69
- 2026-10-29: 69
- 2026-10-28: 68

## Common questions

### What is the Naelos.ai MCP server?

Naelos.ai is an MCP server listed in the public MCP registry as ai.naelos/naelos. Astrology charts, transits and eclipses from NASA JPL data, 13,200 BC to AD 17,191. Free, no key. This page covers its hosted endpoint (https://mcp.naelos.ai/mcp).

### Is the Naelos.ai MCP server safe to use?

Naelos.ai scores 72 out of 100 on VerifyMCP. 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 Naelos.ai MCP server expose?

Naelos.ai exposes 10 tools: natal_chart, sky_now, planet_position, transits, synastry, and 5 more. Their descriptions and schemas cost roughly 1,311 tokens of context every time the server is loaded.

### Does the Naelos.ai MCP server require authentication?

No. We connected to Naelos.ai without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the Naelos.ai MCP server still maintained?

Naelos.ai is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://mcp.naelos.ai/mcp
- Website: https://naelos.ai/mcp
- Changelog RSS feed: https://verifymcp.io/servers/ai-naelos-naelos/mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/ai-naelos-naelos/mcp.json
- HTML version of this page: https://verifymcp.io/servers/ai-naelos-naelos/mcp