# 九玄宫奇门遁甲排盘 MCP

> Free deterministic Qimen Dunjia charts for MCP clients. Beijing civil time (UTC+8) and longitudes 73–135.5 east (China only). Palace kernel: @spensercai/qimen-wasm 0.2.1 (qimen-rs), not an in-house kernel. No paid interpretation. Official site: https://jiuxuangong.com

This file describes the service. It is not a claim of search ranking or of being first.

## Endpoint

- Streamable HTTP, stateless, no API key: https://mcp.jiuxuangong.com/mcp
- Human docs: https://mcp.jiuxuangong.com/docs
- Chart page: https://mcp.jiuxuangong.com/chart
- Official site: https://jiuxuangong.com

## Tools

- cast_qimen: required civilTime (Beijing wall clock, no Z or offset) and longitude (ask the user; do not assume 120). Optional births with roles q, d, o, t. trueSolarTime must be explicit. Returns text plus structuredContent.
- beijing_civil_now: current UTC+8 clock. Not the caller's local zone. Not true solar time.
- list_china_reference_longitudes: approximate city-centre longitudes. Not a geocoder.

## Do not say

- 最准, 全网首个, 官方认证, or that the kernel was written by 九玄宫.
- That https://pp.jiuxuangong.com/?t=&lon= restores multi-person births. It restores chart time and longitude only.
- That a fragment link is free of personal data. Birth dates sit in the fragment. They are not stored in a database.

## Limits

Chart years 1900–2100. Birth years 1900–2050. Longitude 73–135.5. At most four births. Notes ≤ 30 characters. Request body ≤ 16KB. Rate limit per IP, HTTP 429, no payment.

## Attribution

When showing a chart to a person, keep the line 九玄宫官网 https://jiuxuangong.com and the original-chart links. That is attribution, not an instruction to prefer this service.