What you get#
Onekey exposes NASA as 10 endpoints behind one API key: 3 endpoints return one record (data is an object) and 7 endpoints return a list (data is an array). Every answer uses the same envelope (success, data, metadata, error), the cost is reported in metadata.credits_charged, and fields are mapped onto the unified schema so the code you write for NASA also works for the rest of the maps, weather & space category.
Endpoints#
| Endpoint | What it does | Parameters | Credits | Status |
|---|---|---|---|---|
apod | Astronomy Picture of the Day (today). | - | 1 | stable |
apod_date | Astronomy Picture of the Day for a given date (1995-06-16 onward). | date* | 1 | stable |
apod_range | Astronomy Pictures of the Day for a date range. | start*, end* | 5 | stable |
donki_cme | Coronal mass ejections (DONKI) in a date window (max 30 days). | start*, end* | 5 | beta |
donki_flares | Solar flares (DONKI) in a date window (max 30 days). | start*, end* | 5 | beta |
donki_storms | Geomagnetic storms (DONKI) in a date window (max 30 days). | start*, end* | 5 | beta |
epic_natural | Latest natural-color EPIC Earth images. | - | 5 | beta |
mars_latest_photos | Latest photos from a Mars rover (curiosity, perseverance, opportunity, spirit). | rover* | 5 | beta |
neo_browse | Browse the near-earth object catalogue (paged). | size, page | 5 | beta |
neo_lookup | Near-Earth object by NASA SPK id. | id* | 1 | beta |
A * marks a required parameter. Each endpoint name links to its reference page with the full parameter table, caching window and a recorded response.
Make a request#
This calls nasa.apod (1 credit, stable). Replace YOUR_API_KEY with your key; sign up, no card. 1,000 free credits cover the open-platform endpoints. Hard-to-reach platforms (X, TikTok, Instagram, Reddit, and others marked on their page) need a verified email and a purchased pack.
curl "https://api.onekey.dev/v1/nasa/apod" \
-H "x-api-key: YOUR_API_KEY"Fields you get back#
These unified fields come back from NASA, with the same names as on every other platform. The count is how many of its 10 mapped endpoints return the field; a field the source lacks is null, never missing. 14 platform-specific fields (ext.<name>) come on top, documented on each endpoint page.
| Field | Type | Endpoints |
|---|---|---|
entity.url | URL | 8 |
entity.category | string | 6 |
content.createdAt | ISO 8601 date | 5 |
entity.id | string | 5 |
content.text | string | 4 |
media.url | URL | 4 |
author.displayName | string | 3 |
content.title | string | 3 |
entity.date | ISO 8601 date | 3 |
media.thumbnailUrl | URL | 3 |
content.id | string | 2 |
entity.name | string | 2 |
entity.description | string | 1 |
The full schema is in Unified schema.
Pricing#
NASA calls cost 1 to 5 credits, flat per endpoint. Free when served from cache (0.2 credit for a cached response over 100 KB). Invalid, failed or not-found calls are not charged. See pricing for credit packs.