Divine API - Western Astrology MCP Server

Official MCP server by Divine API for Western Astrology services. Exposes 57 tools covering natal charts, synastry, transits, composite charts, progressions, planetary returns, prenatal analysis, and advanced natal techniques, backed by the live Divine API (astroapi-4 and astroapi-8 hosts).

Setup

1. Get your API key and auth token from https://divineapi.com/api-keys
2. Set environment variables: DIVINE_API_KEY and DIVINE_AUTH_TOKEN
3. Add to your MCP client configuration (Claude Desktop, Cursor, etc.)

Tool groups (57 tools)

Notable input details

• house_system accepts friendly names (placidus, koch, porphyry, regiomontanus, campanus, equal, whole-sign, morinus, alcabitius) or the Swiss Ephemeris single-letter codes (B, C, E, K, M, O, P, R, W). Names are mapped to letter codes before the API call; invalid values fail client-side with the list of accepted names.
• divine_western_dominants requires method (TRADITIONAL or MODERN).
• divine_western_fixed_stars_details requires star_list; get valid names from divine_western_fixed_stars_list (which needs no input).
• Detail endpoints are two-step: divine_western_planet_return_details takes a return_key from divine_western_planet_returns_list, and divine_western_prenatal_details takes a prenatal_key from divine_western_prenatal_list.
• Transit tools require the transit moment: transit_day/transit_month/transit_year (plus time and location fields where the endpoint needs them) and, for weekly/monthly/full reports, a transit_planet.
• divine_western_custom_transit computes transits at a fully specified transit moment and place: it takes the natal birth block plus all ten transit-moment fields as required inputs (transit_day/transit_month/transit_year/transit_hour/transit_min/transit_sec and transit_place/transit_lat/transit_lon/transit_tzone). Unlike divine_western_transit_basic, it also accepts the transit place, latitude, longitude, and timezone.
• API failures raise MCP tool errors (isError: true); plain Error: ... strings are returned only for client-side validation of enum-style inputs.

See CHANGELOG.md for the full history, including the fixes that made 38 previously failing tools work.

Documentation: https://developers.divineapi.com/western-api