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Western Solar Arc

asterwise_get_western_solar_arc
Read-onlyIdempotent

Western Solar Arc Directions for a target date: the solar arc (progressed Sun minus natal Sun) is added to every natal planet and angle. It is approximately 1° per year; unlike secondary progressions, all planets advance at the same rate.

WORKFLOW: BEFORE: asterwise_get_western_natal. AFTER: None.

INPUT CONTRACT: birth — WesternBirthData. target_date (optional YYYY-MM-DD) — defaults to today.

DO NOT CONFUSE WITH: asterwise_get_western_secondary_progressions — each planet moves at its own rate. asterwise_get_western_transits_daily — real-time transits, not arc directions.

Full output and error contract: https://docs.asterwise.com/mcp/tools/get-western-solar-arc/

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
birthYesBirth data for Western astrology tools (tropical zodiac).
target_dateNoDate to direct the chart to, YYYY-MM-DD. Defaults to today (UTC).
response_formatNoOutput format: 'markdown' (default) for a readable report, or 'json' for the raw structured payload.markdown

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changed
    • changedInput schema / properties / target_date / description
      Previous value: -"Date in YYYY-MM-DD format. Defaults to today when omitted."New value: +"Date to direct the chart to, YYYY-MM-DD. Defaults to today (UTC)."
  2. Changed2 schema fields changed
    • addedInput schema / properties / response_format / description
      Added value: +"Output format: 'markdown' (default) for a readable report, or 'json' for the raw structured payload."
    • addedInput schema / properties / target_date / description
      Added value: +"Date in YYYY-MM-DD format. Defaults to today when omitted."
  3. Changed2 schema fields changed
    • addedInput schema / properties / response_format / default
      Added value: +"markdown"
    • changedInput schema / required
      Previous value: -[
      -  "birth",
      -  "response_format"
      -]New value: +[
      +  "birth"
      +]
  4. Added

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