Naelos.ai

ai.naelos/naelosnaelos.aistreamable-httpv1.0.0Scanned 1 hour ago

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

10 tools: 2 do something that can't be undone and 8 change things.

Reads private data · 0
Reads text others write · 0
Can send data out · 2
2 findings

Tools listed without sign-in. Remote posture

Anlyon alternative

10 of these tools change something. Run those as governed actions.

Declare what an action changes, and Anlyon puts it under a shared limit, binds every approval to the exact request, and grades the outcome. It works on any HTTPS API you can describe as an action.

Anlyon does not run, proxy or govern this MCP server. A tool your own code calls directly is not routed through Anlyon and is not governed by it.

Import an OpenAPI spec →

Tools

Grouped by what each tool does, most consequential first. Open one for its reasons and full description; descriptions are the publisher's own words.

10 tools

Can't be undone 2Sends, pays, publishes or merges: once done, it cannot be taken back.Claude Code: ask

eclipsesSolar and lunar eclipses between two dates (up to 20 years per call), with type, the exact moment of greatest eclipse and the eclipse degree.Can send data out1 finding
Why it is in this group
- The input addresses people (input.to): what it sends cannot be taken back.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
What it can reach
- outboundThe input takes a destination (input.to): what the tool writes goes there.
Findings
- Warn
  The server marks "eclipses" read-only (readOnlyHint: true), and its own name, description or input give the class "irreversible".
  Matched text
  annotations: {"readOnlyHint":true,"idempotentHint":true,"openWorldHint":false}; The input addresses people (input.to): what it sends cannot be taken back.
  What this check looks for
Description, as the server wrote it
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.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: false
- idempotentHint: true
timing_eventsBetween two dates: planets changing sign, new and full Moons (and quarters), and retrograde and direct stations, each with its exact moment in UTC.Can send data out1 finding
Why it is in this group
- The input addresses people (input.to): what it sends cannot be taken back.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
What it can reach
- outboundThe input takes a destination (input.to): what the tool writes goes there.
Findings
- Warn
  The server marks "timing_events" read-only (readOnlyHint: true), and its own name, description or input give the class "irreversible".
  Matched text
  annotations: {"readOnlyHint":true,"idempotentHint":true,"openWorldHint":false}; The input addresses people (input.to): what it sends cannot be taken back.
  What this check looks for
Description, as the server wrote it
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.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: false
- idempotentHint: true

Changes things 8Creates or changes something that can be changed back.Claude Code: ask

naelos_libraryWhich national charts (198) and empire charts (19) Naelos holds, each researched and sourced, with the founding event it is cast for.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it
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.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: false
- idempotentHint: true
natal_chartA complete natal (birth) chart: every planet's sign, degree and house, the Ascendant and Midheaven, retrogrades, and the aspects between planets with exact orbs.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it
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.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: false
- idempotentHint: true
planet_positionOne body's tropical position on a date, anywhere from 13,200 BC to AD 17,191, with its speed and whether it is retrograde.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it
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.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: false
- idempotentHint: true
progressionsThe 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).No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it
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).
Annotations the server declares
- readOnlyHint: true
- openWorldHint: false
- idempotentHint: true
returnsThe solar return for a year (the moment the Sun returns to its birth position, the chart for that year) or the lunar return nearest now, cast for the birthplace or another location…No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it
The solar return for a year (the moment the Sun returns to its birth position, the chart for that year) or the lunar return nearest now, cast for the birthplace or another location.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: false
- idempotentHint: true
sky_nowWhere every planet is at a moment (now by default): sign, degree, retrograde, and the aspects between them.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it
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.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: false
- idempotentHint: true
synastryThe aspects between two people's birth charts (each one's planets to the other's), with exact orbs and strength.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it
The aspects between two people's birth charts (each one's planets to the other's), with exact orbs and strength.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: false
- idempotentHint: true
transitsEvery 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 e…No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it
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.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: false
- idempotentHint: true

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Exfil surface

Which tools read private data, which read text someone else can write, and which can send data out. One of each is a path a prompt injection can use.

No private-data, untrusted-input, outbound path in this server alone: no tool is tagged private-data or untrusted-input.

Reads private data0: Reads files, mail, messages, databases, secrets, calendars or repositories.
Reads text others write0: Brings in text someone else can write: web pages, inbound email, messages, issues and comments.
Can send data out2: Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL.; eclipses
timing_events

Other servers in the same agent add their own tools to these paths. Audit your whole setup to see them together.

Remote posture

What anyone on the internet sees at the remote endpoint: an anonymous initialize and tools/list, and the public OAuth metadata.

Tools listed without sign-in

Looked at Oct 28, 2026, 20:18 UTC, unchanged since Oct 28, 2026. No credentials were sent and no tool was called. What is looked at.

Reachable: yes
HTTP status of an anonymous initialize: 200
tools/list served without credentials: yes
Tools that change things, listed without credentials: 10
Protocol version: 2025-06-18
WWW-Authenticate on 401: not observed
resource_metadata in WWW-Authenticate: not observed
RFC 9728 protected resource metadata: not observed
Authorization servers: not observed
Legacy HTTP+SSE transport: no
Dynamic client registration: not observed
Client ID metadata documents: not observed

HighThe whole server
The endpoint served tools/list without credentials, and the list has 10 tools that change things (2 irreversible, 8 write). Whether a call also works without credentials was not tested: tools are never called.
Matched text
https://mcp.naelos.ai/mcp: tools/list returned 10 tools to an anonymous client, including timing_events (irreversible), eclipses (irreversible), natal_chart (write), sky_now (write), planet_position (write) and 5 more
What this check looks for

Findings

Matches of fixed checks, with the text they matched.

2 warn

Warntiming_events
The server marks "timing_events" read-only (readOnlyHint: true), and its own name, description or input give the class "irreversible".
Matched text
annotations: {"readOnlyHint":true,"idempotentHint":true,"openWorldHint":false}; The input addresses people (input.to): what it sends cannot be taken back.
What this check looks for
Warneclipses
The server marks "eclipses" read-only (readOnlyHint: true), and its own name, description or input give the class "irreversible".
Matched text
annotations: {"readOnlyHint":true,"idempotentHint":true,"openWorldHint":false}; The input addresses people (input.to): what it sends cannot be taken back.
What this check looks for

History

Changes to its tool definitions and to its remote endpoint, newest first.

No change seen yet. Its tools are rescanned every day, and a remote endpoint is looked at once a week.

All changes to this server

Install

Pinned to version 1.0.0. Values in angle brackets are yours to fill in.

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

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

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change or a way out, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json

{
  "permissions": {
    "allow": [],
    "ask": [
      "mcp__naelos__natal_chart",
      "mcp__naelos__sky_now",
      "mcp__naelos__planet_position",
      "mcp__naelos__transits",
      "mcp__naelos__synastry",
      "mcp__naelos__returns",
      "mcp__naelos__progressions",
      "mcp__naelos__timing_events",
      "mcp__naelos__eclipses",
      "mcp__naelos__naelos_library"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. A read that can send data out (it takes a URL, say) asks first too. It assumes the server is installed as naelos. Review it before you use it.

Capability tags behind 2 rules

mcp__naelos__timing_events outbound
mcp__naelos__eclipses outbound

Keep the decision: fail CI when the tools change, follow every change, or show a badge.

Pin in CI

Fail a build when the tools you reviewed are not the tools the server serves today.

curl -s "https://anlyon.dev/api/v1/servers/ai.naelos/naelos/verify?hash=3d3f1ca40dbdd1e71f09e5e955d6cf5734f3d326d3f8efa2744b8fca5fa461cb" | jq -e '.changed == false'

Pinned hash 3d3f1ca40dbd, from Oct 28, 2026, 20:18 UTC.

Watch

Get told when its tools change: a new tool, a new description, a new class.

https://anlyon.dev/servers/ai.naelos/naelos/changes.xml

An Atom feed. Works in any feed reader or Slack's RSS app.

Badge

[![anlyon.dev](https://anlyon.dev/badge/ai.naelos/naelos.svg)](https://anlyon.dev/servers/ai.naelos/naelos)

Source: MCP Registry. Synced Oct 28, 2026, 20:17 UTC.