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AsterNym

by asternym.com · remote · no sign-in to list tools · v1.2.0 · published by com.asternym

Birth charts for agents: BaZi, Chinese and Western zodiac, numerology. Keyless and read-only.

Changes · 6
CompareRegistry entry

6 tools: 6 change things.

Scanned Oct 21, 2026

No check matched anything in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http asternym https://asternym.com/mcp

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

6 tools

Changes things 6Claude Code: ask
  • asternym_baziPillars, day master, hidden stems (藏干) with their ten gods (十神), element counts, dominant and missing elements, na yin, the twelve stages and the void branches.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
    Pillars, day master, hidden stems (藏干) with their ten gods (十神), element counts, dominant and missing elements, na yin, the twelve stages and the void branches. The year turns at Li Chun, not at 1 January or Lunar New Year. Without a time there is no hour pillar and the response says so. The same thing over HTTP: POST https://asternym.com/api/v1/bazi.

    Annotations the server declares

    • title: The BaZi Four Pillars alone, with hidden stems and ten gods.
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • asternym_bazi_hoursThe twelve 時辰 of a day, each with its hour pillar, hidden stems, ten god and the element counts of the whole chart at that hour.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 twelve 時辰 of a day, each with its hour pillar, hidden stems, ten god and the element counts of the whole chart at that hour. The 23:00-00:00 slot is returned separately as lateZi: from 23:00 the hour pillar has already turned to the next day's 子 (早子時) while the day pillar has not, so it differs from the 00:00-01:00 slot on the same date. These are the Chinese double-hours, not the Western planetary hours. The same thing over HTTP: POST https://asternym.com/api/v1/bazi/hours.

    Annotations the server declares

    • title: Every BaZi double-hour of one civil date, optionally ranked by element.
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • asternym_natalTen planets with sign, degree, whole-sign house and retrograde flag; the Ascendant, midheaven and their opposites; the twelve whole-sign houses; the mean lunar nodes; the five majo…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
    Ten planets with sign, degree, whole-sign house and retrograde flag; the Ascendant, midheaven and their opposites; the twelve whole-sign houses; the mean lunar nodes; the five major aspects with orb and whether each is applying or separating; plus stelliums, retrogrades and the Moon's phase. Tropical zodiac, geocentric apparent positions, astronomy-engine. This is the one endpoint that requires lat, lng and tz: the angles and houses are a place on the Earth meeting the sky. A time is optional, and without one the angles and houses are null rather than taken from noon, and the Moon is a noon estimate the notes warn about. The same thing over HTTP: POST https://asternym.com/api/v1/natal.

    Annotations the server declares

    • title: The Western natal chart: planets, houses, angles, nodes and aspects.
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • asternym_numerologyPythagorean numerology: Life Path, birthday number and its components, and with a name the expression, soul urge, personality, cornerstone, capstone and hidden passion.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
    Pythagorean numerology: Life Path, birthday number and its components, and with a name the expression, soul urge, personality, cornerstone, capstone and hidden passion. Master numbers are kept where the position allows. The same thing over HTTP: POST https://asternym.com/api/v1/numerology.

    Annotations the server declares

    • title: Life Path and birthday number, plus the name numbers when a name is sent.
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • asternym_readingSun sign, Chinese animal and element, BaZi day master and pillars, Life Path and the AsterNym identity, from the same engine as every page on the site.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
    Sun sign, Chinese animal and element, BaZi day master and pillars, Life Path and the AsterNym identity, from the same engine as every page on the site. The same thing over HTTP: POST https://asternym.com/api/v1/reading.

    Annotations the server declares

    • title: A whole reading from a birth date, and optionally a time and place.
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • asternym_zodiacThe Sun's sign from its apparent ecliptic longitude, with a cusp reported rather than resolved by assuming noon, and the Chinese animal, element and polarity with the Lunar New Yea…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 Sun's sign from its apparent ecliptic longitude, with a cusp reported rather than resolved by assuming noon, and the Chinese animal, element and polarity with the Lunar New Year boundary. Note the two calendars differ on purpose: the Chinese year here turns at Lunar New Year, while the BaZi year pillar turns at Li Chun. The same thing over HTTP: POST https://asternym.com/api/v1/zodiac.

    Annotations the server declares

    • title: Both zodiacs: the Western sun sign and the Chinese animal.
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false

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.

Install

Pinned to version 1.2.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http asternym https://asternym.com/mcp

Run in a terminal.

Claude Code permissions

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

.claude/settings.json
{
  "permissions": {
    "allow": [],
    "ask": [
      "mcp__asternym__asternym_reading",
      "mcp__asternym__asternym_bazi",
      "mcp__asternym__asternym_bazi_hours",
      "mcp__asternym__asternym_numerology",
      "mcp__asternym__asternym_zodiac",
      "mcp__asternym__asternym_natal"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as asternym. Review it before you use it.