Heasarc API
Science & SpaceAccess Heasarc public data through one AllAPI key — 16 endpoints across the Heasarc surface. No Heasarc account, no credentials, no scraping stack — one anonymous request returns real data or a documented honest error, never fabricated.
| Method | Endpoint | Operation |
|---|---|---|
| GET | /api/heasarc/box | Box |
| GET | /api/heasarc/catalog | Catalog |
| GET | /api/heasarc/catalog_cone | Catalog cone |
| GET | /api/heasarc/columns_search | Columns search |
| GET | /api/heasarc/cone_count | Cone count |
| GET | /api/heasarc/count | Count |
| GET | /api/heasarc/distinct | Distinct |
| GET | /api/heasarc/mission | Mission |
| GET | /api/heasarc/name_search | Name search |
| GET | /api/heasarc/observation | Observation |
| GET | /api/heasarc/polygon | Polygon |
| GET | /api/heasarc/query | Query |
| GET | /api/heasarc/sample | Sample |
| GET | /api/heasarc/schemas | Schemas |
| GET | /api/heasarc/tables | Tables |
| GET | /api/heasarc/top | Top |
Call the Heasarc API in one line
Free tier — 200 credits/month, no card. One key works across all 468 platforms, 39 MCP tools and 48 composites.
Get your free key → API reference