explore_natal_chart
Renders an interactive birth-chart wheel for natal requests; click any planet, house, or aspect for instant interpretation. Supports house-system switching.
Instructions
PRIMARY tool for any natal/birth-chart request. Renders an interactive, clickable chart wheel — prefer this over ephemeris_natal_chart when the user wants to SEE a chart. Returns an embedded visual chart explorer that lets you click any planet, house, or aspect line for instant astrological interpretation.
CREDIT COST: 1 credit per call.
Supports house system switching (Placidus, Whole Sign, Equal, Koch). The chart is computed using NASA JPL DE440 ephemerides for sub-arcsecond precision. Renders interactively in MCP Apps-capable hosts (Claude Desktop) and falls back to static SVG in other hosts.
Input Schema
| Name | Required | Description | Default |
|---|---|---|---|
| bodies | No | Optional list of body names to include. Defaults to 13 classical bodies (Sun through Pluto + Chiron + Nodes). Use 'all' as a single item to include every available body (Lilith, Ceres, Juno, Vesta, Pallas, Vertex, etc.). Example: ['sun','moon','lilith','vertex']. | |
| datetime | Yes | ISO 8601 datetime; zone required — a `Z`/±HH:MM suffix or the `timezone` argument. Date-only resolves to 12:00 UTC. Full rule: server `instructions`. | |
| latitude | No | Birth latitude in decimal degrees (positive = North). Optional if `location` is a place name — the resolver fills it in. If you supply lat/lon directly, resolve them with location_search first; never recall coordinates from memory. | |
| location | No | Birth location. Prefer a plain place name like 'New York, NY' — the server resolves it via the same lookup `location_search` uses (unambiguous names → coords + timezone; ambiguous names throw with a disambiguation hint). If you already have coords, either omit this or use it as a display caption; supplied coords always win. | |
| timezone | No | IANA timezone (e.g. `America/Chicago`); required when the datetime is naive, ignored otherwise. | |
| longitude | No | Birth longitude in decimal degrees (positive = East). Optional if `location` is a place name. | |
| house_system | No | House system to use (default: placidus). |