Chart and reference

House Cusps

get_house_cusps

Get Placidus house cusp positions with sign/star/sub lords for all 12 houses.

Parameters

Name	Type	Required	Description
birth_datetime	string	Yes	Birth date and time in ISO 8601 format (e.g., "1990-05-15T14:30:00").
latitude	number	Yes	Birth location latitude. Range: -90 to 90.
longitude	number	Yes	Birth location longitude. Range: -180 to 180.
utc_offset_minutes	number	Yes	UTC offset in minutes (e.g., 330 for IST, -300 for EST).
ayanamsa	enum: kp \| lahiri \| raman \| true_chitra	No	Ayanamsa system. Defaults to kp.

Example call

Send the request as a standard MCP tools/call:

POST https://mcp.lumin.guru/mcp
Content-Type: application/json

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_house_cusps",
    "arguments": {
      "birth_datetime": "1992-08-14T04:32:00",
      "latitude": 6.927,
      "longitude": 79.861,
      "utc_offset_minutes": 330,
      "ayanamsa": "kp"
    }
  }
}

Engine endpoint

This tool delegates to the kp-engine endpoint:

POST /v1/kp/cusps

The engine is a private internal service. All public access flows through the MCP server, which handles auth, rate limiting, and response compaction.

Birth data

This tool requires birth data. If you have already called set_birth_profile in the same conversation, the MCP server injects those fields automatically and you can omit them from the call.