The Metropolitan Museum of Art's API at https://collectionapi.metmuseum.org/public/collection/v1 covers hundreds of thousands of objects. Search returns ids; fetch each object separately.
None — no key, no signup. Every example runs as-is.
Full reference: https://metmuseum.github.io/
436535 is Van Gogh's Wheat Field with Cypresses.
curl https://collectionapi.metmuseum.org/public/collection/v1/objects/436535{
"objectID": 436535,
"isHighlight": true,
"accessionNumber": "1993.132",
"accessionYear": "1993",
"isPublicDomain": true,
"primaryImage": "https://images.metmuseum.org/CRDImages/ep/original/DP-42549-001.jpg",
"primaryImageSmall": "https://images.metmuseum.org/CRDImages/ep/web-large/DP-42549-001.jpg",
"additionalImages": [
"https://images.metmuseum.org/CRDImages/ep/original/LC-EP_1993_132_suppl_CH-004.jpg",
"https://images.metmuseum.org/CRDImages/ep/original/LC-EP_1993_132_suppl_CH-003.jpg"
],
"constituents": [
{
"constituentID": 161947,
"role": "Artist",
"name": "Vincent van Gogh",
"constituentULAN_URL": "http://vocab.getty.edu/page/ulan/500115588",
"constituentWikidata_URL": "https://www.wikidata.org/wiki/Q5582",
"gender": ""
}
],
"department": "European Paintings",
"objectName": "Painting",
"title": "Wheat Field with Cypresses",
"culture": "",
"period": "",
"dynasty": ""
}hasImages=true skips objects without a photo.
curl "https://collectionapi.metmuseum.org/public/collection/v1/search?hasImages=true&q=sunflowers"{
"total": 69,
"objectIDs": [
436524,
484935
]
}