Smithsonian Open Access
Science Data Free key (no card)
AuthenticationFree key (no card)
Rate limitNo published quota in the public docs; keep requests reasonable.
Documentation: edan.si.edu ยท Checked Sep 13, 2026
About
The Smithsonian's Open Access API gives you programmatic access to millions of museum artifacts, natural-history specimens, historic images, and even 3D models. Much of the content is free of copyright restrictions and cleared for reuse. You sign up with a free api.data.gov key, which takes seconds and needs no credit card.
Details
Free to start. You may need a free key, but no credit card.
Auth: Free key (no card)
Rate limit: No published quota in the public docs; keep requests reasonable.
Verified: 2026-09-13
Best for: personal developer fun
Setup
- Get a free key at api.data.gov/signup by entering your email (no credit card).
- Paste the example URL with your key to search the collections instantly.
- Change the q parameter to any keyword like 'dinosaur' or 'apollo'.
- Use the object endpoints in the docs to fetch full details, images, and 3D files.
Example
https://api.si.edu/openaccess/api/v1.0/search?q=apollo&api_key=YOUR_KEYUse cases
- Build a natural-history explorer showing real specimen photos and 3D models
- Pull historic images for a classroom or documentary project
- Create a museum-collection search app by keyword, date, or department