Over 1,426 APIs cataloged

Find the Perfect API for Your Next Project

The only API directory that live-tests real endpoints: 158 APIs independently measured with real HTTP requests, the rest scored from metadata — reliability, speed, security & developer experience.

Zero-Config APIs

Perfect for prototypes. No authentication required.

⭐ Beginner's Pick
84 A
Est.

Axolotl API returns random photos and fun facts about axolotls (aquatic salamanders).

No Auth Beginner HTTPS 116ms
⭐ Beginner's Pick
90 A+
Measured

Cat Facts delivers random, verified facts about cats via a simple REST API.

No Auth Beginner HTTPS 523ms
79 B
Est.

Cataas provides programmatic access to cat as a service (cats pictures and gifs) via REST API.

No Auth Beginner HTTPS 361ms
⭐ Beginner's Pick
92 A+
Est.

Dog Facts API returns random interesting facts about dogs as plain JSON.

No Auth Beginner HTTPS 38ms
⭐ Beginner's Pick
92 A+
Est.

This Dog Facts API returns random dog facts in clean JSON with no API key required.

No Auth Beginner HTTPS 31ms
⭐ Beginner's Pick
95 A+
Measured

The Dog CEO API serves random dog images from the Stanford Dogs Dataset, organized by breed.

No Auth Beginner HTTPS 411ms
⭐ Beginner's Pick
74 B
Est.

FishWatch by NOAA provides sustainability data, habitat info, and images for US fish species.

No Auth Beginner HTTPS 4386ms
⭐ Beginner's Pick
92 A+
Est.

HTTP Cat returns a cat-themed image for any HTTP status code via a simple URL pattern.

No Auth Beginner HTTPS 48ms
⭐ Beginner's Pick
92 A+
Est.

HTTP Dog serves a photo of a dog for every HTTP status code (200, 404, 500, etc.), making it easy to visualize API responses in a fun way.

No Auth Beginner HTTPS 65ms
⭐ Beginner's Pick
90 A+
Measured

MeowFacts returns random, verified facts about cats such as their sleep habits, hunting instincts, and biological quirks.

No Auth Beginner HTTPS 851ms
92 A+
Est.

Movebank is a global database of animal movement and migration tracking data collected by GPS tags and sensors attached to wild animals worldwide.

No Auth Beginner HTTPS 50ms
⭐ Beginner's Pick
92 A+
Est.

PlaceBear generates placeholder bear images at any pixel dimensions you specify, making it easy to fill wireframes and mockups with visually interesting content during development.

No Auth Beginner HTTPS 192ms

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