Advanced techniques
Ayanamsa Frame Spread (what the choice of ayanamsa actually changes)
get_frame_spread
Builds the SAME chart under every ayanamsa the engine implements and reports exactly which positions change lord and which hold. Use it instead of a birth-time disclaimer: the frames disagree by a fixed ~5.6 arcminutes, so the set of positions that actually move is small and nameable. Returns per cusp and per planet the levels that move (sign / star / sub / subSub) with the lord each frame gives, the base lords always, a 'summary' with 'frameIndependentAtSub' (true for roughly half of charts, which is a stronger statement than any caveat), the dasha balance spread in days (a fixed offset carried to every later period boundary, and a flag when the frames disagree on the birth mahadasha lord outright), and 'birthTimeEquivalence': how much clock-time error each position's frame spread is worth. That last block is the reframe. On the Ascendant the whole family is worth well under a minute of birth time, so the frame is noise there; on the slow planets it is worth hours or days, so the frame is the entire uncertainty and no birth-time precision can settle it. Nothing here is scored, ranked or averaged, and no frame is preferred: a position either changes lord or it does not. All six frames are computed, 'true_chitra' from Spica's apparent place, so none carries an 'aliasOf'.
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. |
| frames | unknown | No | no description |
| include_subsub | unknown | No | no description |
| include_dasha | unknown | No | Report the dasha balance spread per frame. Default true. |
Example call
Send the request as a standard MCP tools/call:
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_frame_spread",
"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.