Astronomy Core

Sky data API for developers and AI agents

Positions, phases, rise/set, natal charts, and vectors — JSON over HTTPS. Powered by astronomy-engine (MIT).

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What you get

  • Snapshots — full solar system state for any lat/lon/time
  • Bodies — moon phase, sun rise/set, planetary positions
  • Natal charts — ASC, MC, lunar nodes, houses, aspects
  • LLM-ready — /v1/capabilities, OpenAPI, optional MCP tools

Example

curl -H "Authorization: Bearer ac_live_..." \
  "https://api.astronomycore.com/v1/bodies/moon?latitude=41.9&longitude=12.5"

Free tier: 100 requests/day. Sign up for an API key.