Public APIs Directory
A curated collection of over 1,600+ free, open-source APIs across 50+ categories for developers, AI agents, and indie hackers.
AdoptAPet
Resource to help get pets adopted
Axolotl
Collection of axolotl pictures and facts
Cat Facts
Daily cat facts
Cat Facts
Random cat facts
Cataas
Cat as a service (cats pictures and gifs)
Cats
Pictures of cats from Tumblr
Dog Facts
Random dog facts
Dog Facts
Random facts of Dogs
Dogs
Based on the Stanford Dogs Dataset
eBird
Retrieve recent or notable birding observations within a region
FishWatch
Information and pictures about individual fish species
HTTP Cat
Cat for every HTTP Status
HTTP Dog
Dogs for every HTTP response status code
IUCN
IUCN Red List of Threatened Species
MeowFacts
Get random cat facts
Movebank
Movement and Migration data of animals
Petfinder
Petfinder is dedicated to helping pets find homes, another resource to get pets adopted
PlaceBear
Placeholder bear pictures
PlaceDog
Placeholder Dog pictures
RandomDog
Random pictures of dogs
RandomDuck
Random pictures of ducks
RandomFox
Random pictures of foxes
RescueGroups
Adoption
Shibe.Online
Random pictures of Shiba Inu, cats or birds