# TianJi Astrology

> Ephemeris-grade natal charts, current transits, zodiac sign profiles. No API key.

- name: io.github.feifeizhao25-ship-it/tj-mcp
- version: 1.0.0
- connection class: R0 (autonomous)
- trust: 97/100
- quality: 79/100 (new)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/io.github.feifeizhao25-ship-it%2Ftj-mcp
- tools: https://api.protogrid.dev/v1/servers/io.github.feifeizhao25-ship-it%2Ftj-mcp/tools

**An agent can connect right now, no human step.** Remote endpoint, no authentication, reachable on the last probe.

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "tj-mcp": {
      "type": "http",
      "url": "https://mcp.tianji-astrology.com/mcp"
    }
  }
}
```


## Trust

- hygiene: 100
- liveness: 100
- freshness: 100
- provenance: 90
- drivers: +repository +namespace-matches-repo +website +reachable +uptime-100% +updated-6d-ago
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 79/100 (new)

### protocol: 88 (weight 25)

- pass `protocol.modern`: supports 2026-07-28 (server/discover)
- pass `protocol.stateless`: answers without a session
- pass `protocol.transport`: streamable HTTP
- warn `protocol.list_ttl`: tools/list declares ttlMs 0, so clients re-fetch it on every use

### authorization: n/a (weight 15)

- n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth
- n/a `auth.secret_in_url`: no templated URL

### tool hygiene: 71 (weight 30)

- pass `tools.descriptions`: every tool has a description
- pass `tools.description_length`: descriptions are concise
- pass `tools.schemas`: every tool has an object input schema
- fail `tools.annotations`: no tool declares readOnlyHint or destructiveHint, so clients cannot tell safe calls from risky ones
- fail `tools.directory_hints`: no tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: get_current_transits (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); compute_natal_chart (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); get_sign_profile (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); …
- pass `tools.token_cost`: about 571 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

### stability: n/a (weight 15)

- n/a `stability.changes`, `stability.rug_pull`: tool history recorded for 6 of the 7 days needed

### dependencies: n/a (weight 15)

- n/a `deps.known_vulns`, `deps.mcp_sdk_version`, `deps.resolvable`: no npm or PyPI package

- tools: 4, about 571 tokens to load them all
- tool set hash: 9176940c5bb569dd569ec30252ff20c0
- badge: [![protogrid quality](https://protogrid.dev/badge/io.github.feifeizhao25-ship-it/tj-mcp.svg)](https://protogrid.dev/servers/io.github.feifeizhao25-ship-it/tj-mcp)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

_No tool definition changes recorded._

## Remotes

- https://mcp.tianji-astrology.com/mcp (streamable-http, auth none, reachable true, uptime30d 1)

## Packages

_none_

## Tools (4)

- `compute_natal_chart`: Compute a full natal (birth) chart: 10 planets (sign/degree/house/retrograde),
12 Placidus house cusps, and inter-planetary aspects (major aspects, classic orbs).
Pass lng/lat/tz_str (e.g. -74.01, 40.71, 'America/New_York') for exact offline
computation; otherwise city+nation are geocoded online.
- `get_current_transits`: Today's planetary positions (UTC now at Greenwich) — the current sky, for
transit analysis, daily overviews, and timing work.
- `get_sign_profile`: Reference card for a zodiac sign: element, modality, ruling planet.
- `validate_interpretation`: Anti-hallucination confirmation gate (kosma-style): verify interpretation claims
are grounded in the chart before publishing them.
chart_json = exact JSON from compute_natal_chart or get_current_transits.
claims = JSON array: [{"text": "...", "factors": [
    {"type": "aspect", "a": "Sun", "b": "Moon"},        # aspect exists in chart
    {"type": "planet_house", "a": "Sun", "b": 5},        # planet is in that house
    {"type": "planet_sign", "a": "Sun", "b": "Leo"},     # planet is in that sign
    {"type": "house_sign", "a": 5, "b": "Leo"}]}]        # house cusp is in that sign
A claim is supported only if >= 2 of its factors independently exist in the chart.
Returns per-claim verdicts; gate = "blocked" if any claim is unsupported — rewrite
the claim against verified factors or drop it.