Advanced techniques

Natural Conception Windows (KP)

get_conception_windows

The MD-AD-PD periods whose three lords all signify one of 2/5/11, each with the loss (6/8/12) and denial (1/4/10) houses the lords also touch, in confidence order (an engine weighting, not a KSK figure). Returns '{ naturalConceptionWindows: [{ startDate, endDate, mahadasha, antardasha, pratyantardasha, promiseHousesCovered, lossHousesCovered, denialHousesCovered, confidence, rationale }], bookCitations, disclaimer, pagination, pageNote }'. **'naturalConceptionWindows' is paged.** Read 'get_progeny_promise' first: a window is a period, not a promise. The same list 'get_fertility_window' returns as 'naturalConceptionWindows'. Supplementary lens, never a fertility diagnosis.

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 \| kp_new \| lahiri \| raman \| true_chitra \| khullar	No	Ayanamsa system. Defaults to kp.

Example call

Send the request as a standard MCP tools/call:

http

POST https://mcp.lumin.guru/mcp
Authorization: Bearer mcp_yourkey...
Accept: application/json, text/event-stream
Content-Type: application/json

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

Birth data

This tool requires birth data on every call. The MCP server is stateless, so calling set_birth_profile first validates the data and returns the reading plan, but it does not store anything. Repeat the same five fields here.