Kittens is a free, public API that serves random images of kittens — no auth, no rate limits, no nonsense.
GET /random — redirect to a random kitten imageGET /random.json — { "file": "<url>" }GET /randomfile — random kitten image, served directlyGET /randomaf — random kitten image, served as an attachmentBuilt & Maintained by StuxAPIs, Hosted by Stuxedo. The source is fully open on GitHub.