API Marketplace
Curated public APIs — finance, news, weather, crypto and more — callable through one x402 payment. No API keys, no signups: pay $0.01, get data. Every call is also a live probe.
| API | Category | Auth | Price | Probes | Status |
|---|---|---|---|---|---|
| AdoptAPetResource to help get pets adopted | Animals | apikey | $0.02 | 1/1 | live |
| AxolotlCollection of axolotl pictures and facts | Animals | none | $0.01 | 1/1 | live |
| Cat FactsDaily cat facts | Animals | none | $0.01 | 1/1 | live |
| Cat FactsRandom cat facts | Animals | none | $0.01 | 1/1 | live |
| CataasCat as a service (cats pictures and gifs) | Animals | none | $0.01 | 1/1 | live |
| CatsPictures of cats from Tumblr | Animals | apikey | $0.02 | 1/1 | live |
| Dog FactsRandom dog facts | Animals | none | $0.01 | 1/1 | live |
| Dog FactsRandom facts of Dogs | Animals | none | $0.01 | 1/1 | live |
| DogsBased on the Stanford Dogs Dataset | Animals | none | $0.01 | 1/1 | live |
| FishWatchInformation and pictures about individual fish species | Animals | none | $0.01 | 1/1 | live |
| HTTP CatCat for every HTTP Status | Animals | none | $0.01 | 1/1 | live |
| HTTP DogDogs for every HTTP response status code | Animals | none | $0.01 | 1/1 | live |
| IUCNIUCN Red List of Threatened Species | Animals | apikey | $0.02 | 1/1 | live |
| PetfinderPetfinder is dedicated to helping pets find homes, another resource to get pets | Animals | apikey | $0.02 | 1/1 | live |
| PlaceBearPlaceholder bear pictures | Animals | none | $0.01 | 1/1 | live |
| PlaceDogPlaceholder Dog pictures | Animals | none | $0.01 | 1/1 | live |
| RandomDogRandom pictures of dogs | Animals | none | $0.01 | 1/1 | live |
| RandomDuckRandom pictures of ducks | Animals | none | $0.01 | 1/1 | live |
| RescueGroupsAdoption | Animals | none | $0.01 | 1/1 | live |
| The DogA public service all about Dogs, free to use when making your fancy new App, Web | Animals | apikey | $0.02 | 1/1 | live |
| xeno-cantoBird recordings | Animals | none | $0.01 | 1/1 | live |
GET /api/market # catalog (free) GET /api/market/<id>/call?path=/v1/endpoint&foo=bar # 402 → pay $0.01 USDC/USDT → retry # x-payment-tx: BASE:<txHash> # x-agent-wallet: <yourWallet> → first 3 calls free # x-ref: <referrerWallet> → they earn 5%, you pay same