# AsterNym (remote · asternym.com)

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

- Trust score: 72/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-27

## Components

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

## Channel facts

- Endpoint: `https://asternym.com/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.2.0`

## 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 2026-09-27.

- **Endpoint Security**: 80/100
  - 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.
  - The HSTS (Strict-Transport-Security) header is present.
  - 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**: 62/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 1652 tokens (~275/item across 6 items; 6 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 17/100
  - Stability observed for 5 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% 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 6 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 7 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 60/100
  - Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28.

## Install

### How do I install the AsterNym MCP server?

AsterNym is a hosted endpoint at https://asternym.com/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 com-asternym-asternym 'https://asternym.com/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "com-asternym-asternym": {
      "url": "https://asternym.com/mcp"
    }
  }
}
```

### VS Code

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

### Codex

```toml
[mcp_servers.com-asternym-asternym]
url = "https://asternym.com/mcp"
```

### opencode

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

### OpenClaw

```bash
openclaw mcp add com-asternym-asternym --url 'https://asternym.com/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  com-asternym-asternym:
    url: "https://asternym.com/mcp"
```

### Netclaw

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

### Vellum

```bash
assistant mcp add com-asternym-asternym -t streamable-http -u 'https://asternym.com/mcp'
```

### Other

```json
{
  "mcpServers": {
    "com-asternym-asternym": {
      "type": "http",
      "url": "https://asternym.com/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.

### 2026-09-27 (score 72, +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.

### 2026-09-25 (score 71, 0)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-09-24 (score 71, +1)

No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-23 (score 70, 0)

- [functional regression] Schema quality: 1371 → 1652
- [functional improvement] Stability: unverified → 0.03
- [functional] Server version: 1.2.0 → 1.3.0
- [functional] New tool “asternym_natal”

### 2026-09-22 (score 70)

First indexed and scored.

## MCP tools (6)

### `asternym_reading` (~182 tokens)

A whole reading from a birth date, and optionally a time and place.

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.

Input parameters:

- `agent` (string): Optional: the name of the agent or product calling. Logged for usage counts; never required, never verified.
- `date` (string, required): Local civil date, YYYY-MM-DD. Required.
- `lat` (number): Decimal degrees.
- `lng` (number): Decimal degrees.
- `time` (string): Local clock time, HH:MM. Omit if unknown; nothing is assumed and noon is never substituted.
- `tz` (string): IANA time zone, e.g. Asia/Singapore. Required when lat and lng are given.

### `asternym_bazi` (~227 tokens)

The BaZi Four Pillars alone, with hidden stems and ten gods.

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.

Input parameters:

- `agent` (string): Optional: the name of the agent or product calling. Logged for usage counts; never required, never verified.
- `date` (string, required): Local civil date, YYYY-MM-DD. Required.
- `sexCategory` (string): Echoed back. Only the luck-pillar cycle reads it, and this endpoint does not return luck pillars.
- `time` (string): Local clock time, HH:MM. Omit if unknown; nothing is assumed and noon is never substituted.
- `tz` (string): IANA time zone, e.g. Asia/Singapore. Required when lat and lng are given.

### `asternym_bazi_hours` (~232 tokens)

Every BaZi double-hour of one civil date, optionally ranked by element.

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.

Input parameters:

- `agent` (string): Optional: the name of the agent or product calling. Logged for usage counts; never required, never verified.
- `date` (string, required): Local civil date, YYYY-MM-DD. Required.
- `element` (string): Optional: rank the hours by how much of this element the chart carries.
- `tz` (string): IANA time zone, e.g. Asia/Singapore. Required when lat and lng are given.

### `asternym_numerology` (~170 tokens)

Life Path and birthday number, plus the name numbers when a name is sent.

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.

Input parameters:

- `agent` (string): Optional: the name of the agent or product calling. Logged for usage counts; never required, never verified.
- `date` (string, required): Local civil date, YYYY-MM-DD. Required.
- `name` (string): Optional given name. Without it the name numbers are omitted rather than guessed. Used and discarded; never stored.
- `surname` (string): Optional surname, used with the given name where the method uses the full name.

### `asternym_zodiac` (~213 tokens)

Both zodiacs: the Western sun sign and the Chinese animal.

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.

Input parameters:

- `agent` (string): Optional: the name of the agent or product calling. Logged for usage counts; never required, never verified.
- `date` (string, required): Local civil date, YYYY-MM-DD. Required.
- `lat` (number): Decimal degrees.
- `lng` (number): Decimal degrees.
- `time` (string): Local clock time, HH:MM. Omit if unknown; nothing is assumed and noon is never substituted.
- `tz` (string): IANA time zone, e.g. Asia/Singapore. Required when lat and lng are given.

### `asternym_natal` (~281 tokens)

The Western natal chart: planets, houses, angles, nodes and aspects.

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.

Input parameters:

- `agent` (string): Optional: the name of the agent or product calling. Logged for usage counts; never required, never verified.
- `date` (string, required): Local civil date, YYYY-MM-DD. Required.
- `lat` (number, required): Decimal degrees.
- `lng` (number, required): Decimal degrees.
- `time` (string): Local clock time, HH:MM. Omit if unknown; nothing is assumed and noon is never substituted.
- `tz` (string, required): IANA time zone, e.g. Asia/Singapore. Required when lat and lng are given.

## Diagnostics

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

## Score history

- 2026-09-27: 72
- 2026-09-26: 71
- 2026-09-25: 71
- 2026-09-24: 71
- 2026-09-23: 70
- 2026-09-22: 70

## Common questions

### What is the AsterNym MCP server?

AsterNym is an MCP server listed in the public MCP registry as com.asternym/asternym. Birth charts for agents: BaZi, Chinese and Western zodiac, numerology. Keyless and read-only. This page covers its hosted endpoint (https://asternym.com/mcp).

### Is the AsterNym MCP server safe to use?

AsterNym 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 AsterNym MCP server expose?

AsterNym exposes 6 tools: asternym_reading, asternym_bazi, asternym_bazi_hours, asternym_numerology, asternym_zodiac, asternym_natal. Their descriptions and schemas cost roughly 1,305 tokens of context every time the server is loaded.

### Does the AsterNym MCP server require authentication?

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

### Is the AsterNym MCP server still maintained?

AsterNym is still listed as active in the MCP registry. We last reached this channel on 27 September 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://asternym.com/mcp
- Website: https://asternym.com/for-agents
- Changelog RSS feed: https://verifymcp.io/servers/com-asternym-asternym/asternym.xml
- Changelog JSON feed: https://verifymcp.io/servers/com-asternym-asternym/asternym.json
- HTML version of this page: https://verifymcp.io/servers/com-asternym-asternym/asternym